Вакансии

Design and implement extensions to EVM clients (Geth/Reth) for supporting stateful precompiles. Implement novel mechanism design primitives, collaborating with our research team, into the execution layer.

• 5+ лет в product management, опыт в fintech или data-продуктах. • Опыт с GenAI / LLM / AI-ассистентами и агентами.

- Владеть end-to-end сценариями протокола по трём линиям: данные, подбор финансового продукта, исполнение сделки. - Формировать продуктовую логику протокола: какие запросы делает агент, какие ответы получает, какие ограничения применяются, как фиксируется объяснение и аудит.

Задачи: — Проектирование и разработка CoinJoin-протокола и transaction flow. — Формирование, проверка и подписание Bitcoin-транзакций. — Работа с UTXO, PSBT, SegWit и Taproot. — Интеграция с Bitcoin Core через RPC. — Реализация coin selection и fee estimation. — Работа с sighash и различными сценариями подписания транзакций. — Реализация multisig / threshold-signature сценариев там, где они необходимы архитектуре. — Обработка особенностей mempool, propagation, replacement и подтверждения транзакций. — Проектирование системы с учетом non-custodial модели: сервис не должен получать контроль над средствами пользователей. — Участие в threat modeling и техническом аудите протокола совместно с security engineer. — Code review и принятие ключевых архитектурных решений по Bitcoin-части проекта. Требования: — Глубокое понимание Bitcoin protocol и UTXO-модели. — Практический опыт работы с Bitcoin Core и Bitcoin Core RPC. — Уверенное понимание структуры Bitcoin-транзакций. — Опыт работы с PSBT. — Хорошее понимание SegWit и Taproot. — Понимание sighash и механики подписания Bitcoin-транзакций. — Опыт реализации или использования fee estimation и coin selection. — Понимание устройства Bitcoin mempool и жизненного цикла транзакции. — Опыт разработки на одном или нескольких языках: Rust, C++, Go, Python. — Опыт проектирования надежных backend/protocol-систем. Будет большим плюсом: — Опыт разработки Bitcoin Core или непосредственной работы с его кодовой базой. — Опыт с rust-bitcoin, BDK или аналогичными Bitcoin-библиотеками. — Опыт разработки CoinJoin, JoinMarket-подобных или других privacy-oriented Bitcoin-протоколов. — Опыт построения non-custodial Bitcoin-сервисов. — Опыт с multisig, threshold signatures и современными схемами управления ключами. — Понимание privacy-модели Bitcoin и методов blockchain analysis. Что важно в этой роли: Мы ищем не просто backend-разработчика, который когда-то интегрировал криптовалютный API. Нужен инженер, который понимает Bitcoin на уровне протокола и способен самостоятельно принимать решения по архитектуре транзакций, подписям, UTXO и взаимодействию с Bitcoin Core.

Задачи: — Построение threat model для CoinJoin-протокола и всей системы. — Анализ возможных атак на coordinator и участников протокола. — Проектирование защиты от Sybil-атак и DoS. — Анализ возможных утечек метаданных. — Анализ privacy-свойств протокола. — Аудит механизмов authentication, authorization и rate limiting. — Анализ key-management архитектуры. — Security review Bitcoin transaction flow. — Code review критичных компонентов. — Анализ attack surface backend и инфраструктуры. — Подготовка рекомендаций по hardening. — Участие в security testing и подготовке к внешним аудитам. Требования: — Опыт application security, protocol security или security engineering. — Умение самостоятельно строить threat models. — Хорошее понимание сетевой безопасности. — Понимание DoS/DDoS и Sybil attack моделей. — Опыт security review backend-систем. — Понимание криптографических примитивов и digital signatures. — Опыт анализа key-management систем. — Умение проводить code review с точки зрения безопасности. — Понимание рисков metadata leakage и privacy-sensitive систем. Будет большим плюсом: — Глубокое понимание Bitcoin protocol. — Опыт security-аудита Bitcoin или других cryptocurrency-протоколов. — Знание UTXO, PSBT, SegWit, Taproot и Bitcoin transaction signing. — Опыт анализа CoinJoin или других privacy protocols. — Понимание blockchain analysis и deanonymization techniques. — Опыт аудита non-custodial систем. — Практический опыт Rust/C++/Go. Что важно в этой роли: Security engineer должен оценивать не только классические уязвимости backend-приложения, но и экономические, протокольные и privacy-атаки. Для CoinJoin особенно важны поведение злонамеренных участников, Sybil/DoS, корреляция активности и возможные утечки метаданных.

Location: Remote Workplace: Remote ABOUT INJECTIVE LABS Injective Labs is trailblazing a new dawn for Web3 enabled finance. We are the core contributors to Injective, one of the fastest growing blockchains in the industry. Injective provides an interoperable smart contracts platform that is optimized for building decentralized finance applications. Interoperability is at the core of Injective, which is natively integrated with chains such as Ethereum, Cosmos and Solana. Developers can rapidly launch premier financial applications suited for mass adoption using Injective’s infrastructure and specialized DeFi primitives such as the world’s first fully on-chain order book. Our team has decades of experience spearheading the largest financial institutions and tech organizations. Injective is incubated by Binance and is backed by leading firms such as Jump Crypto, Pantera and Mark Cuban. ABOUT THE ROLE We are looking for an accomplished Protocol Engineer who is able to fit into an existing highly-skilled global dev team. Your role is to work closely with the protocol team to brainstorm, write specs, implement and test chain features for our Injective DeFi modules. You also have the freedom to detect and take ownership to improve chain performance and scalability via kvstore optimization, processing logic and order matching engine RESPONSIBILITIES: - Build, maintain and test core components on our Cosmos-SDK protocol including our decentralized orderbook, trade execution coordinator, order matcher, and Layer-2 execution environment - Develop and optimize core components of the Injective blockchain (consensus, state management, financial infrastructure and applications) - Write open-source Golang clients that allow users to interact directly with our protocol and smart contracts - Contribute to the research and development of new blockchain features and technologies - Work closely with cross-functional teams, including front-end developers, back-end developers, and quality assurance engineers, to deliver comprehensive blockchain solutions - Collaborate with external partners and open-source communities to enhance our blockchain ecosystem   WHO YOU ARE: - Minimum of 3 years’ experience as a Blockchain Engineer - Prior experience working in trading or in an exchange - Worked on at least two production Golang codebases that are reasonably large and performant - Strong knowledge of Go idioms, libraries and parallel processing - Strong knowledge of blockchain, DeFi & DEX concepts, consensus mechanisms, CosmWasm contract platform - Strong knowledge of CS fundamentals such as data structures and API design - Ability to communicate technical concepts with other technical and non-technical team members NICE TO HAVES: - Experience with Cosmos-SDK/Tendermint - Experience with cryptography libraries including digital signature, hash algorithms used by Ethereum, Cosmos - Experience with key-value databases especially ones used by cosmos-sdk - Experience with Ethereum/Solidity (bonus points if you've worked with Layer-2 before!) - Knowledge of financial instruments and markets WHY WORK WITH US? - Competitive salary and INJ token award - Remote-friendly work environment with flexible hours. - Unlimited PTO - Equipment - Home Office Stipend - Opportunity to work on cutting-edge blockchain technology in the finance industry. - Collaborative team culture with opportunities for professional growth and development. - Global team meet ups. As an equal opportunity employer we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. We will only contact candidates using emails from the @injectivelabs.org http://injectivelabs.org domain. If you are approached by any other account or domain regarding this position, it was not sent by us. Please stay cautious and report any suspicious communication.

Location: Paris Workplace: Remote ABOUT MORPHO Morpho is a leading Decentralized Finance (DeFi) lending protocol backed by a16z crypto, Paradigm, Ribbit Capital, Apollo, Vaneck, Coinbase Ventures, Variant and 50 others to build an open credit network giving anyone, anywhere, access to the best possible terms. Morpho is experiencing exponential adoption, with over billion in deposits on the network and used by institutional clients including Bitwise, Galaxy, and Anchorage Digital and the largest crypto exchanges, such as Coinbase, Binance, and Kraken. Now, Morpho is scaling its team of contributors to establish itself as the open credit network, not just of DeFi, but of the world.   WHY MORPHO EXISTS Everyone has the potential to build something great for the world. But fulfilling that ambition almost always requires more: people willing to trust you with their capital. Yet access to capital still depends on where you live, who you know, and which institutions are willing to trust you. Even when capital is available, it sits fragmented across disconnected networks and hidden behind intermediaries. The result is a system that fails most of the people it should serve. Borrowers overpay. Lenders earn less than they should. Many are shut out entirely, not because they are unworthy of credit, but because today's infrastructure was never built to connect them. Morpho exists to solve this. Full article here https://morpho.org/blog/why-morpho-exists/. LOCATION Paris or remote (from -5h GMT up to +2h GMT to ensure sufficient overlap with the rest of the team).   ROLE Morpho's Protocol team is evolving the core lending infrastructure that powers products and markets across the ecosystem. As the number of opportunities, integrations, and protocol initiatives grows, the team needs clear product direction on what to build, why it matters, and how to sequence the work. This role will work with Morpho’s protocol team to shape product strategy and guide execution. You will turn the needs of users and ecosystem partners into a focused roadmap, work closely with protocol and engineering teams to shape solutions, and drive improvements from discovery through launch and adoption. You will operate at the intersection of deeply technical systems, financial markets, and a fast-moving ecosystem.   RESPONSIBILITIES - Own the roadmap for Morpho's protocol team, defining the highest-impact problems to solve and sequencing opportunities against company goals, user needs, technical constraints, and ecosystem dynamics. - Build and run a continuous discovery process with curators, distributors, integrators, developers, and other protocol users to understand their workflows, pain points, and emerging needs. - Translate user and market insights into clear product requirements, decision frameworks, and success criteria that help protocol and engineering teams move quickly with strong rationale. - Partner closely with protocol, engineering, research, security, legal, solutions, partnerships, and marketing to take initiatives from early exploration through design, implementation, audit, launch, and adoption. - Evaluate product and technical tradeoffs, including when to extend the protocol, improve surrounding infrastructure, enable partners, or deliberately avoid adding complexity. - Define and track the signals that show whether protocol initiatives are working, combining quantitative data with ecosystem feedback to guide iteration and future investment. - Communicate product direction, decisions, tradeoffs, and release implications clearly to internal teams and external stakeholders. - Improve how product decisions are made and documented as Morpho and its protocol ecosystem scale.   WHAT SUCCESS LOOKS LIKE FIRST 30 DAYS You understand Morpho's protocol, development and release process, current roadmap, and the rationale behind the major initiatives in flight. You have built relationships across protocol, engineering, research, security, and go-to-market teams, and have started speaking with key curators, distributors, integrators, and developers.   FIRST 3 MONTHS You have established a clear, prioritized view of the most important protocol problems and opportunities. The roadmap reflects explicit tradeoffs, user evidence, technical constraints, and measurable outcomes. You have driven at least one meaningful initiative from discovery into execution and proactively keep stakeholders aligned on decisions and changes.   FIRST 6 MONTHS You have shipped a meaningful protocol improvement and can show how it advanced user or business outcomes. Product, protocol, and engineering teams have stronger shared context on what to build and why. You consistently identify important user needs, ecosystem shifts, and roadmap conflicts early, and have improved Morpho's product discovery and decision-making process.   MUST HAVE EXPERIENCE & SKILLS - 5+ years building technical products in complex or fast-changing environments. - Proven track record taking products or major features from ambiguous problem spaces through launch and iteration. - Strong technical fluency, with the ability to reason about system design and constraints, engage deeply with engineers and researchers, and translate technical concepts for non-technical audiences. - Excellent product judgment: you can distinguish important user problems from requests, make principled tradeoffs, and focus teams on the work with the greatest impact. - Strong user discovery and synthesis skills, with the ability to uncover needs across different user types and turn incomplete or conflicting inputs into clear direction. - Experience leading cross-functional work without relying on formal authority. - Ability to define success, use quantitative and qualitative evidence, and adapt direction as new information emerges. - Excellent written and verbal communication, especially in an async environment. - Comfort creating clarity and driving decisions in highly ambiguous contexts. - Strong ownership and autonomy: you act without waiting to be told. - Team-first mindset, low ego.   NICE TO HAVE - Experience in crypto, DeFi, traditional finance, or fintech. - Familiarity with lending markets, smart contracts, or permissionless protocols. - Experience shipping products with significant security, audit, regulatory, or governance considerations. - Experience working with research & development teams PERKS & BENEFITS We design benefits around deep work and growth, so you can do the best work of your career. Expect fair, top-tier compensation, real flexibility, time together in Paris, great health coverage, and support to keep learning.   EQUAL OPPORTUNITY We welcome applicants from all backgrounds and hire based on talent, potential, and values alignment.

Location: London, England; Remote, Europe; Remote, Asia; Remote, US Workplace: remote About us   Aave Labs began with a simple question: how do we make financial services like borrowing, saving, and earning more accessible globally?   We built the Aave Protocol, now the world’s largest and most trusted onchain lending market, connecting decentralized finance with individuals, traditional finance, and fintech.   Today, we build trusted, high-quality products that expand access to lending, credit, and savings globally   Our culture   We build trusted products that help people access and discover economic opportunities.   We hold a high bar for quality and craftsmanship. No detail is too small. Trust depends on it.   We’re a global team building products people can actually use, turning complex technology into something simple and reliable.   We stay aligned, move quickly, and think long term, while keeping teams lean and focused on impact.   About the Role Aave is looking for a Protocol Security Researcher to help build its internal protocol security function. The role sits at the intersection of smart contract security, protocol design, adversarial research, and AI-assisted review. You will help assess major protocol changes before deployment, maintain security context across Aave’s deployed systems, and reason about the risks introduced by critical dependencies, integrations, and Aave-adjacent infrastructure. This is not a narrow audit role. The goal is to improve Aave’s ability to understand and reduce protocol risk continuously. How you can make an impact: Review major Aave protocol changes before external audit or deployment Perform attacker-driven analysis of smart contracts, protocol mechanisms, and integrations Participate in design and architecture discussions early enough to influence security-relevant decisions Identify risks in Aave-adjacent systems, including assets, bridges, oracles, adapters, and critical dependencies Contribute to AI-assisted security tooling and evaluate its effectiveness in real review workflows Turn review findings into reusable knowledge, invariants, assumptions, and testing or monitoring ideas Work with monitoring and incident response teams when review findings imply operational detection or response needs Collaborate with external auditors by helping define scope, known risks, and areas of concern Let's connect if you have: 5+ years of relevant security experience Strong smart contract security background Ability to independently review complex codebases and reason about protocol-level failure modes Attacker mindset: you can move from “this looks wrong” to “this is how it could be exploited” Strong understanding of DeFi mechanisms, including lending, liquidations, accounting, oracles, collateral, governance, and integrations Evidence that you are actively using AI to improve security research, review quality, or review throughput Clear written communication: you can explain risk, impact, uncertainty, and trade-offs to engineers and non-security stakeholders Good judgment about severity, exploitability, and when a finding matters Nice to haves: Experience with formal methods, fuzzing, invariant testing, or custom security tooling Experience building internal tools for security review, code understanding, or knowledge management Experience working with external audit firms or leading audit engagements Familiarity with governance payloads, upgrade systems, permissioning, and incident response Open-source security research, published findings, CTFs, bug bounties, or prior public vulnerability research Haven’t quite met all the criteria? Let’s not miss out on the chance to speak. Whilst you might not meet every single requirement, you might bring other, more exciting skills to the companies!   Equal opportunities statement:   Aave Labs celebrates diversity and views each and every team member as a separate individual with their own unique identity. No matter your race, religion, gender, ethnicity, age, disability, sexual orientation or even the wallet you use, we welcome you at Aave Labs. As an equal opportunities employer, we take accountability and believe in everyone's potential to build, create and inspire changes. With a mission to build a diverse workforce, we are proud to foster a working environment in which everyone can feel safe and valued for who they are.

Location: Global Remote Workplace: Remote ABOUT MATTER LABS Matter Labs builds private settlement infrastructure that lets regulated institutions settle directly with each other without exposing data, ceding control, or waiting days. Global finance moves $4 quadrillion a year on systems designed for paper and telex. The institutions that built them - from clearing houses to exchanges to the world's largest banks, institutions are now actively replacing them. Our core product, Prividium, gives each institution its own private settlement environment (a Prividium Zone) with independent governance and built-in interoperability across counterparties, asset classes, and jurisdictions. Settlement happens through zero-knowledge proofs: one party proves a transaction is valid without revealing any underlying data to the counterparty. The only private settlement infrastructure built on zero-knowledge cryptography. Founded in 2018. Backed by a16z and Union Square Ventures. A fully remote team of around 70 with eight years of production zero-knowledge infrastructure behind us, now pointed at the biggest problem in institutional finance. THE ROLE You will protect ZKsync's core: smart contracts, ZK circuits, and blockchain nodes. Your reviews, threat models, and incident work decide whether vulnerabilities are found by us or by attackers. The role owns internal security reviews of critical components, threat modeling, adversary research, and the security side of incident response, and it carries broad license to spot gaps and fix them beyond any assigned list. It is a hands-on individual contributor role for someone who wants to know how things break and applies that instinct ethically where the stakes are high. WHAT YOU'LL DO - Break things on purpose. Threat-model and review Solidity contracts, blockchain state transition functions in Rust, and other critical systems before an attacker gets the chance. - Own protocol components. Take responsibility for the secure architecture and implementation of the components you adopt, from design review through production. - Track the adversary. Follow hacks, exploits, and new attack vectors across the industry and convert the lessons into concrete improvements in our systems. - Scale security through others. Embed secure-design practice across development teams and influence architecture decisions early, without formal authority. - Use AI on defense. Apply modern AI systems to scale security work, while accounting for attackers using the same tools. - Respond when it counts. Join security investigations and incident response, often under time pressure with incomplete information. WHAT WE LOOK FOR Each of these is a demonstrated capability, shown through work you have done: - A record in security engineering or security research: threat modeling, security-focused code review, or vulnerability research on production systems, with findings you can walk through mechanism by mechanism. - Proficiency in strongly typed languages such as C++, Go, or Scala. Rust and Solidity are our primary languages, and prior experience with them is not required. - Deep grounding in algorithms and data structures, including their computational and memory complexity, with experience implementing them from scratch. - Protocol-level debugging and root-cause analysis on complex distributed systems. - Working knowledge of recent security incidents in the blockchain space and the prevention techniques behind them. - Clear written and spoken English, the company's working language. If you meet most of these and believe you can do this job, apply anyway. NICE TO HAVE Hands-on experience with Solidity smart contracts, ZK circuits, or core blockchain protocols. Public security research, audit reports, bug-bounty results, or CTF history all count as evidence. WORK MODEL & PAY - Competitive base salary. Matter Labs applies no geographic pay discounts. - Performance-based variable compensation with a defined annual target is additional. The plan may pay in ZK tokens or cash. A long-term token incentive is also additional and is paid in ZK tokens, with new-hire grants vesting over four years and a one-year cliff. - Fully Remote. Occasional travel to team gatherings and industry events. - Freedom & ownership culture: no time tracking (where legally applicable), minimum bureaucracy-only results matter.

Location: United Kingdom; Denmark Workplace: Remote The engineering team at Chainalysis is inspired by solving the hardest technical challenges and building products that establish trust in cryptocurrencies. We're a global organization that thrives on challenging work and doing it alongside exceptionally talented teammates. Our industry evolves rapidly, and our mission is to build a flexible, AI-driven platform that automates entity resolution, optimizes data labeling pipelines, and creates predictive models that identify illicit patterns before they escalate. Our data and solutions have been used to solve some of the world's most high-profile criminal cases and grow consumer access to cryptocurrency safely. Now, by pairing the industry's most trusted blockchain data with agents that reason, investigate, and act, we help our customers scale their workflows as the cryptocurrency economy becomes increasingly mainstream. The Protocols team delivers high-quality, low-latency blockchain datasets that serve as the trusted foundation for Chainalysis’ investigation, compliance, data and security products. We currently support more than 30 blockchains, translating on-chain data into actionable intelligence. In this role, you’ll: - Architect and evolve scalable, reliable, and performant systems for ingesting and parsing complex blockchain data. - Leverage AI-native engineering workflows (LLMs, automated agents) to increase team velocity and code quality. - Provide blockchain protocol expertise (EVM, UTXO, etc.) to the team and cross-functional stakeholders. - Manage the full software development lifecycle, including production monitoring, debugging, and maintaining reliability of our pipelines and services. - Work closely with Product Managers to ensure our datasets meet the evolving needs of the crypto ecosystem. - Guide junior and mid-level engineers through code reviews, design docs, and technical mentorship. We’re looking for candidates who have: - Extensive experience building distributed systems or data-intensive applications. - Experience working with TypeScript either in a professional or personal capacity - A bias to ship and the ability to iterate quickly in a fast-moving environment. - Demonstrated ability to leverage AI assisted development tools to increase velocity while maintaining reliable, maintainable code. - A deep understanding and experience of at least one Blockchain protocol You might also have: - Knowledge and experience with non-EVM chains such as Solana, TON, and Sui. - Experience with indexing and ETL at scale (Spark/Databricks). - Knowledge of Infrastructure as Code (Terraform) and managing services in Kubernetes. - Contributions to open-source blockchain projects. Technologies we use: - Languages: Java, TypeScript - Data Processing: Spark, Databricks, PostgreSQL - Infrastructure: AWS (Serverless & EKS), Kubernetes, Terraform - CI/CD: GitHub Actions AI at Chainalysis AI is not a feature at Chainalysis - it is a new way of working. One that turns instructions into work done, and helps us move faster than the threats we're built to counter, and we expect our employees to take ownership of the output and ensure quality. As the world's most trusted blockchain analytics platform, Chainalysis sits at a rare intersection of proprietary data, regulatory relationships and crypto expertise that makes it uniquely placed to shape and lead the next era of AI-driven intelligence - and we expect everyone here, regardless of role, to be an active part of it. AI fluency is tied directly to how we measure performance and how we plan to win. There is no substitute for your own curiosity. We provide the tools, workflows, and space to experiment - but the expectation is that you develop these capabilities yourself, bring ideas, and collaborate across teams to reinvent the way work gets done. We are not using AI to do less. We are using it to do what was never possible before. About Chainalysis Chainalysis is the blockchain data platform, making it easy to connect the movement of digital assets to real-world services. Powered by deep blockchain data and AI, organizations can investigate illicit activity, manage risk exposure, and develop innovative market solutions built on the industry's most trusted blockchain intelligence. Our mission is to build trust in blockchains, blending safety and security with an unwavering commitment to growth and innovation. You belong here.  At Chainalysis, we believe that diversity of experience and thought makes us stronger. With both customers and employees around the world, we are committed to ensuring our team reflects the unique communities around us. We’re ensuring we keep learning by committing to continually revisit and reevaluate our diversity culture. We encourage applicants across any race, ethnicity, gender/gender expression, age, spirituality, ability, experience and more. If you need any accommodations to make our interview process more accessible to you due to a disability, don't hesitate to let us know. You can learn more here https://go.chainalysis.com/rs/503-FAP-074/images/Interview%20Accommodations%20Request.pdf. We can’t wait to meet you.

About the Role You will design, implement, and evolve the Taproot Assets Protocol, working on mission critical peer-to-peer cryptocurrency daemons written in Go. You'll collaborate with the wider team on researching and designing future iterations of the protocol, participate in issue triage and code review of open source contributions, and communicate with the broader community and industry about the software and technology you build. Requirements — Strong engineering background with solid programming skills — Experience in Go desired, C or C++ relevant as well — Thorough understanding of the principles of distributed systems and peer-to-peer networking — Solid engineering practices and processes, such as testing methodology and documentation — Experience with Bitcoin, cryptography, and/or financial software — Prior contributions to crypto protocols and open source software collaboration preferred — Quick learner, geared towards implementation — Eager to develop new skills and willing to take ownership of projects Responsibilities — Design and implement core Taproot Assets Protocol (TAP) features and algorithms — Contribute to mission critical peer-to-peer cryptocurrency daemons written in Go — Collaborate with the team on research and design of future iterations of the Taproot Assets Protocol — Participate in issue triage and code review of open source contributions — Communicate with the wider community and industry about the software and technology

Architecture & Design — Lead the design and implementation of core protocol components, from initial prototypes to production-grade deployment. Protocol Development — Develop and optimize data structures, consensus algorithms, and cryptographic implementations (e.g., zero-knowledge proofs). Security & Verification — Identify attack vectors, failure modes, and performance bottlenecks; apply formal verification or simulation to validate designs. Cross-Functional Collaboration — Partner with researchers, product managers, and security teams to translate roadmaps into precise technical specifications. Mentorship & Quality — Drive code quality through design reviews, documentation, and technical leadership; mentor junior engineers. Technical Skills Advanced proficiency in systems-level languages used in blockchain (Rust, Go) and smart contract languages (Solidity). Demonstrated track record of open-source contributions in the Web3 ecosystem. Domain Knowledge Strong background in distributed systems, peer-to-peer networking, and modern blockchain primitives (rollup technologies, account abstraction). Up-to-date with rapidly evolving standards such as Ethereum upgrades and inter-blockchain communication protocols. Problem-Solving Proven ability to debug complex issues across network and application layers. Experience making high-level architectural tradeoffs across performance, scalability, and security. Communication Ability to document system improvements and communicate technical concepts to both technical and non-technical stakeholders. Fluency in English, and Korean proficiency would be a plus. Hiring Process Resume Screening → 1st Interview → 2nd Interview → Salary Negotiation Contract Type Singapore: Full-time Employee (Onsite) Worldwide: Service Contractor (Fully Remote)

THE MISSION We are building the next generation of DeFi protocols, pushing the boundaries of what’s possible in decentralized finance. We need a heavy-hitter in Solidity who loves complex business logic, mathematical challenges, and mission-critical security. CORE RESPONSIBILITIES — Contract Engineering: Architect, develop, and evolve smart contracts for a high-stakes DeFi protocol. — Security First: Implement best practices to prevent vulnerabilities (reentrancy, overflows, etc.) and lead audits. — Optimization: Squeeze every drop of performance through expert gas optimization. — Innovation: Research and implement cutting-edge patterns and Layer 2 solutions. — Collaboration: Work closely with Backend and Product teams to translate complex logic into production-ready code. WHAT WE’RE LOOKING FOR — Experience: 5+ years of production-level Solidity development (Mainnet records required). — Deep Tech: Expert understanding of the EVM, assembly (Yul), and smart contract architecture. — Math Background: Master’s/Bachelor’s in Mathematics or Computer Science. — Open Source: Active contribution to DeFi ecosystems or notable open-source projects. — Soft Skills: Fluent English (B2+) and a collaborative mindset for high-speed delivery. — Vision: Clear understanding of L2 scaling and the future of Ethereum. PERKS & BENEFITS — Healthcare: Comprehensive Medical, Dental, and Vision insurance (Family included). — Flexibility: Unlimited PTO policy and a remote-first culture. — Family First: Up to 16 weeks of paid parental leave. — Growth: $1,500 annual educational budget. — Equipment: Home office stipend to build your perfect setup. — Wellbeing: Access to fitness partners and retirement plans (401k).

Location: Tallinn, Estonia; Helsinki, Finland; Abu Dhabi, United Arab Emirates; Dubai, United Arab Emirates; Sharjah, United Arab Emirates Workplace: on-site At TechBiz Global , we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Senior Protocol Engineer to join one of our clients' teams . If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you. You’ll be leading the design and development of next-generation consensus models, building secure and scalable EVM systems, and mentoring a world-class engineering team. What You’ll Do Lead the development of EVM-based systems and blockchain infrastructure. Design and implement Proof of Stake and other consensus models . Build and optimize smart contract platforms and tooling . Collaborate with leadership to define technical strategy and roadmap. Mentor engineers, fostering a culture of innovation and excellence. Drive decentralization and scalability improvements. 10+ years of experience in blockchain protocols, distributed systems, or AI infrastructure. 7 to 8 years hands-on expertise with consensus algorithms and cryptography . Proven track record in blockchain protocol design . Strong background in software engineering (Rust, Go, Solidity, JavaScript, Ruby, etc.). 10 years of experience in leading technical teams in blockchain/crypto companies . Contributions to open-source blockchain projects . A reputation as an innovator in blockchain/crypto . Nice-to-Have Experience in multi-coin pools or algorithmic optimization. Familiarity with NEAR, Blackcoin, Ethereum, BitHalo, or similar ecosystems . Why Join Us? This is a chance to work with a passionate team, shape the future of decentralized technologies, and build solutions that will define the next era of blockchain.

Location: United States, San Mateo, CA Why Sony Interactive Entertainment? Sony Interactive Entertainment isn’t just the Best Place to Play — it’s also the Best Place to Work. Sony Interactive Entertainment (SIE) is the company behind the PlayStation brand. As a subsidiary of Sony Group Corporation, we’re part of a proud legacy of innovation and excellence. SIE is a dynamic technology company, delivering cutting-edge hardware and network services to more than 100 million people and an entertainment leader, home to some of the most beloved and recognizable intellectual properties (IP) in the world. Our role at SIE is to create and nurture the experiences under the PlayStation brand, a name synonymous with entertainment excellence and creativity. Principal Wireless Protocol Architect/Engineer We are building a small team of versatile and enthusiastic leaders to create new products for the PlayStation community. Our team recently delivered the new PlayStation Link, PULSE Explore and PULSE Elite products, recently announced the FlexStrike and PULSE Elevate products, and are hard at work on what comes next. We need an experienced and innovative firmware engineer to help build and support our new products and features. In this role, you will be the technical point of accountability for wireless across accessories: hardware, platform software, audio, security, and product all will route protocol questions to you. You will represent the protocol and the implementation to silicon and ODM partners, evaluate combo-SoC roadmaps, drive vendor firmware defects to resolution, and design so that a supplier change is a port, not a rewrite. You will write the technical strategy documents that let a Director and a VP make an informed decision. And, grow the technical depth by being the leader that mentors senior engineers toward staff and principal, and raise the design-review bar for the whole org. Come and play with us! Responsibilities In this role, you will lead firmware development for high profile product development efforts. You will be responsible for technical leadership, system architecture, and execution across the firmware domain, working closely with internal teams and external partners. Own firmware architecture and design for transport, wireless protocol, firmware and software stacks for embedded devices from concept through production Develop and define communication protocols to enable peripheral functionality Design, implement, and scale low-latency RF/wireless communication protocols for embedded systems Architect structured, modular, and reusable firmware frameworks that scale across multiple platforms and product lines Lead and mentor firmware engineers (internal and external partners) Ensure firmware designs support cross-platform reuse and long-term scalability Troubleshoot complex system-level issues across hardware, firmware, and RF domains Skills Strong in firmware and software architectural patterns Strong embedded firmware development experience in C/C++ Industry authority level experience with RF/wireless systems (e.g., Bluetooth, low-latency audio, or similar technologies) Deep understanding of low-latency embedded systems and communication protocol design Proven ability to design scalable, reusable, and cross-platform firmware architectures Experience with ARM microcontrollers and low-power system design Hands-on experience with hardware bring-up and debugging (including RF/system-level issues) Experience implementing hardware-in-the-loop and automated testing Strong system-level thinking across hardware and software boundaries Ability to operate at both high-level system design and low-level implementation Proven ability to lead firmware efforts across teams and partners Experience with consumer electronics product development from concept through mass production Strong problem-solving and debugging skills Qualifications Bachelor’s degree in electrical engineering, Computer Engineering, Computer Science, or related field (or equivalent experience) 15+ years of experience in embedded firmware development Demonstrated experience leading firmware development for shipped products Strong experience in RF/wireless or low-latency embedded systems Excellent written and verbal communication skills Passion for gaming, digital entertainment, and consumer electronics is a plus Nice to Have Experience with wireless audio or ultra-low latency systems Experience working with external development partners or ODMs Experience with kernel or driver development (Linux, Windows, or similar) Experience scaling engineering processes and mentoring teams Working Conditions Energetic, collaborative and passionate engineers delivering product Travel (domestic and international) required. Estimated 15-20% At SIE, we consider several factors when setting each role’s base pay range, including the competitive benchmarking data for the market and geographic location. Please note that the base pay range may vary in line with our hybrid working policy and individual base pay will be determined based on job-related factors which may include knowledge, skills, experience, and location. In addition, this role is eligible for SIE’s top-tier benefits package that includes medical, dental, vision, matching 401(k), paid time off, wellness program and coveted employee discounts for Sony products. This role also may be eligible for a bonus package. Click here to learn more. The estimated base pay range for this role is listed below. $209,900 — $314,900 USD Please note, Sony Interactive Entertainment conducts background checks at the offer stage for all new employees (which may include criminal background checks for some roles) and will need to process personal information to support these checks. Please refer to our Candidate Privacy Notice for more information about what personal information we collect, how we use it, who we share it with, and your data protection rights. Equal Opportunity Statement: Sony is an Equal Opportunity Employer. All persons will receive consideration for employment without regard to gender (including gender identity, gender expression and gender reassignment), race (including colour, nationality, ethnic or national origin), religion or belief, marital or civil partnership status, disability, age, sexual orientation, pregnancy, maternity or parental status, trade union membership or membership in any other legally protected category. We strive to create an inclusive environment, empower employees and embrace diversity. We encourage everyone to respond. Sony Interactive Entertainment is a Fair Chance employer and qualified applicants with arrest and conviction records will be considered for employment.

Location: Remote Wormhole Labs is a pioneering blockchain technology company building decentralized systems for a freer and fairer global economy. We're reshaping financial infrastructure across the entire crypto stack, from core protocol development to trading systems and user-facing applications. At our core, we're technology innovators bridging traditional finance with the emerging possibilities of crypto. Our seasoned team leverages deep technical expertise to develop solutions that advance the industry. We're seeking talented individuals who share our vision, and have the technical prowess to help build it — join us! As a Solana Protocol Engineer at Wormhole Labs, you will make significant contributions to Wormhole’s ecosystem of programs and protocols on Solana. You will either drive or partner with domain experts on the entire lifecycle of protocol development, including ideation, design, implementation, security review, and deployment. WHAT YOU WILL DO - Contribute to the design, implementation, testing, and security review of Wormhole’s core Solana programs and to protocols expanding to Solana. - Collaborate with cross-functional teams to gather customer requirements, analyze business needs, and translate them into smart contract code. - Follow best practices for secure smart contract development and build future best practices alongside Wormhole security researchers. - Stay up to date with the latest in Solana tooling, best practices, and industry trends. THE IDEAL CANDIDATE WILL - Have deep experience writing production Solana programs. Alternatively, you’ve written production Rust for applications with millions of users. - Be high agency and effect the outcomes they wish to see. - Care deeply about the business outcomes of your work and challenge priorities when the business impact is unclear. - Have a Bachelor's degree in Computer Science, Engineering, or a related field, although equivalent practical experience will also be taken into consideration. WE PROVIDE - Competitive salary and restricted token units, dependent on position type and location. - Unlimited time off, healthcare premium reimbursement, and 401K. - Top-of-the-line MacBook Pro laptop. - Flexibility of working from wherever you have work authorization, as long as you can work 10-6PM US Eastern Time. We minimize unnecessary meetings, but building decentralized systems requires synchronous communication. NOTE: THIS IS A SENIOR-LEVEL ROLE. WE WILL ONLY RESPOND TO APPLICANTS THAT MEET OUR REQUIREMENTS. IF WE DON’T RESPOND, PLEASE ASSUME A POLITE DECLINE FOR NOW.

Location: Limassol, Cyprus About the Role Spotware Systems is looking for an experienced Customer Support Engineer to join our team in Limassol, Cyprus . You will support B2B clients and colleagues across the technical and functional aspects of our products, helping investigate and resolve issues in a fast-moving brokerage environment. This role will suit someone who enjoys getting to the root of complex problems, takes ownership from the first report through resolution, and communicates clearly with both technical and non-technical stakeholders. Responsibilities Provide high-quality B2B technical and functional support to clients. Own and investigate reported issues, resolving them where possible or escalating them with clear evidence and context. Use logs, SQL, system behaviour, and application-level analysis to isolate root causes and determine next steps. Diagnose issues involving MT4/MT5 environments, plugins, gateways, liquidity bridges, operating systems, and applications. Coordinate with clients, internal teams, and third parties, keeping stakeholders informed and driving issues through to resolution. Create and maintain clear documentation for both internal and external use. Continuously deepen your knowledge of forex and our platform while contributing to improvements in support quality and processes. Requirements 3+ years of experience in technical support within a brokerage or fintech environment. Good working knowledge of MT4/MT5 Manager and Administrator terminals, including plugins and gateways. Good working knowledge of liquidity bridges such as oneZero, PrimeXM, Centroid, or similar solutions. Practical SQL skills, including the ability to write, understand, and troubleshoot queries for data analysis and issue investigation. Experience providing operating-system and application-level support. Strong problem-solving and investigation skills, supported by a structured and analytical approach. Strong working proficiency in written and spoken English. Comfort using AI tools in day-to-day work to improve efficiency, problem-solving, and the quality of results. Excellent organisational skills, with the ability to prioritise and manage your workload effectively. Strong numerical and analytical skills. Willingness to join a planned rotating shift schedule after training; the team provides 24/6 coverage, including Saturdays. Nice to Have Experience working with or supporting API integrations. Knowledge of the FIX protocol. Programming or scripting skills in any language Benefits Competitive salary. Private medical insurance. Relocation support (if applicable), including an entry permit, relocation bonus, flight tickets, and airport pickup. Support with settling into life in Cyprus, including accommodation, banking, healthcare, and everyday guidance. Comfortable office environment with fresh fruit every day, treats or pizza on Wednesdays, and snack day on Fridays. Fair remuneration based on your experience, skills, and level of responsibility. Welcome Baby Bonus and Baby Box. Birthday voucher. Partial compensation for sports activities and wellness initiatives. Greek language classes.

Location: Limassol, Cyprus Spotware Systems is seeking an experienced Senior QA Engineer (Full stack) to join our dynamic and highly professional product team in our Limassol office (or remote). This role involves working closely with product managers and developers to ensure our products are robust, scalable, and meet high-quality standards. You will be involved in functional testing, customer scenario testing, stress testing, performance testing, sanity testing, enhancing the automation processes, and the overall QA improvement process. Key Responsibilities: Conduct thorough requirements analysis and collaborate with cross-functional teams to understand technical specifications. Perform manual/automate functional/non-functional testing. Identify, track, and report bugs, ensuring they are resolved promptly with clear root cause analysis. Monitor and maintain test environments to ensure stability and efficiency in test execution. Contribute to and execute test strategies for complex systems with high availability and reliability requirements. Collaborate in code reviews to maintain high quality across automated tests and production code. Requirements: 5+ years of experience in Quality Assurance, specifically in backend projects. 2+ years of experience in troubleshooting Java applications. Proficiency in Java programming for test automation development. Solid knowledge of testing methodologies and test design techniques (e.g., boundary value analysis, equivalence partitioning, state transition testing). Experience in designing and maintaining test cases in Allure TestOps, including traceability to requirements and test reporting. Hands-on experience with microservices architecture and event-driven architecture, including understanding of inter-service communication, message brokers, and asynchronous processing. Proven experience testing TCP socket-based integrations (e.g., WebSocket, gRPC). Strong analytical skills with the ability to perform impact analysis, create traceability matrices, and work with both functional and non-functional requirements. Experience in identifying root causes and understanding issue consequences within complex backend environments. Good working knowledge of SQL for validating backend data and queries. Linux systems knowledge (CLI) for troubleshooting and test environment maintenance. Excellent communication skills with a strong command of English (B1 or above) and Russian. You use AI not just occasionally, but as a core part of how you think, work, and deliver results. Being AI-augmented is part of what makes you a top performer. Preferred Qualifications: Familiarity with binary protocols (e.g., FIX). Hands-on experience with Databases like PG, Clickhouse Hands-on experience with messaging and caching systems like Kafka, Redis Experience in the Forex industry or trading platform knowledge. Conditions: Competitive salary. Private medical insurance. Relocation support (if applicable), including an entry permit, relocation bonus, flight tickets, and airport pickup. Support with settling into life in Cyprus, including basic guidance on everyday matters, accommodation, banking, and healthcare. A comfortable office environment with fresh fruits every day, treats or pizza on Wednesdays, and snack day on Fridays. Fair remuneration based on your experience, skills, and level of responsibility. Welcome Baby Bonus and Baby Box to celebrate the arrival of a child. Birthday voucher. Partial compensation for sports activities and wellness initiatives. Greek language classes.