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Location: Hybrid Workplace: hybrid About the position We're looking for a Game Developer to join our Development team and help bring Fanatee's mobile games to life. You'll be responsible for planning, developing, and maintaining the code behind our games, working closely with different teams to build high-quality experiences for millions of players around the world. If you're passionate about technology, innovation, and games, this could be the opportunity for you! What you'll do Participate in the planning and development of games. Optimize game performance to ensure smooth and efficient experiences. Collaborate with front-end and back-end teams to deliver the best product possible. Contribute to feature specifications, balancing technical costs and benefits when evaluating solutions. Track project schedules and report progress clearly and objectively. Independently develop robust and scalable code. Explore Artificial Intelligence solutions that can improve feature development and code quality. What you'll need Bachelor's degree in Computer Science, Engineering, Game Design, or a related field. Advanced knowledge of Unity and C#. Experience integrating native Android and iOS components, such as push notifications and in-app purchases (IAP). Knowledge of local databases and offline data management. Interest in applying AI coding tools, such as Claude Code, Codex, Gemini CLI, and similar solutions, to game development. Excellent communication and teamwork skills. Proactive mindset, fast learner, and commitment to high standards of quality. Nice to have Advanced English. Experience with data architecture for games. Hands-on experience with projects released to the market. What We Offer Beyond a vibrant and enjoyable work atmosphere, we offer: Competitive compensation aligned with market standards Flexible benefits Health and dental insurance Profit sharing Career development opportunities and professional growth While the role is primarily remote, our São Paulo office is available for those seeking a dedicated workspace. There, you’ll find a calm environment, a stocked fridge with snacks and drinks, and even a ping-pong table for a bit of fun. Come help shape the future whith our amazing team! About Fanatee Fanatee is a mobile gaming startup founded in 2013. Since then, our goal has been to enable people to play our games anytime, anywhere. We believe that quality is the key to success.Our creative processes are well planned and carefully detailed, and our talent lies in turning great ideas into great businesses: our games hit over 250M downloads worldwide. We believe that a diverse work environment contributes to an increasingly responsible society that values differences. Our dream allows us to do what we love the most: work with talented, passionate people and give them the opportunity to achieve goals as big as they can dream of. If you want to share this ride with us and join a lightweight, fun, and focused environment that breathes innovation and game culture, apply now!

Location: Remote - Worldwide About us OpenZeppelin is the security standard onchain finance is built on. Founded in 2015, our mission is to accelerate the world's transition to an open financial system, built on open standards and secured by rigorous research. Our open-source Contract Libraries have facilitated over $35 trillion in onchain value and are used by 10 of the top 10 tokenized money market funds and 9 of the top 10 stablecoins by market cap. We combine AI-native security tooling with deep research and a decade of audit expertise to support leading institutions and crypto-native teams shaping the next generation of digital assets like DTCC, Fidelity, Coinbase, Uniswap, Aave, the Ethereum Foundation, and many more across the full secure development lifecycle. Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information. The Security Services Team OpenZeppelin's Security Services team is responsible for the security of the world's leading web3 protocols and top financial institutions building onchain. Our researchers partner with client teams across the full lifecycle of a protocol: working on architecture and design before any code is written, co-creating novel mechanisms and primitives with engineering teams, conducting deep audits of pre-launch codebases, and providing continuous coverage as production systems evolve. Our clients range from emerging projects shipping their first contracts to global financial institutions running production onchain systems at scale. What you'll be doing Review smart contracts for top decentralized applications, blockchain infrastructure and financial institutions before they launch. Find vulnerabilities, prioritize them, and present findings to the client. Drive audits independently from start to finish, with AI as your primary collaborator. When useful, partner with another researcher to attack the code together and pressure-test findings. Partner with client teams during the design phase of new protocols, analyzing architecture, trust assumptions, and operational constraints before any code is written (Design Reviews, Applied Research engagements). Use AI efficiently throughout the audit process, and build skills, agents, and workflows that compound across the team. Conduct open-ended research into cutting-edge blockchain technologies, vulnerability classes, and emerging attack vectors, and contribute findings back to OpenZeppelin's internal knowledge base and to the broader ecosystem. You have Hands-on and practical experience in one or more of the following: software development, cybersecurity, applied mathematics, distributed systems, cryptography, cryptoeconomics or game theory, or DeFi mechanisms. Experience designing and developing smart contracts, not only auditing them. Strong working knowledge of Solidity and the broader Ethereum / EVM ecosystem (common libraries, frameworks, smart contract patterns). Modern AI tooling is central to how you work, not a novelty. You use it daily to expand audit coverage, reason about complex systems, and produce high-quality outputs faster. You evaluate AI-generated code with a critical eye. Comfort building and extending your own tooling (skills, agents, prompts, scripts, or full workflows) that the rest of the team can adopt and build on. An advanced English level and strong communication skills (oral and written). Nice to have Experience with non-EVM ecosystems and languages, such as Canton, Move (Sui, Aptos), Golang (Cosmos SDK), Cairo (Starknet), Rust-based blockchains (Solana, Stellar), or ZK circuits and cryptography-heavy systems. Experience with risk assessment work in the crypto industry (smart contract risk assessment, threat modeling). Working hand-in-hand with protocol teams on co-creative engagements, helping design, specify, and implement smart contracts alongside the research. Web2 security expertise (penetration testing, web application security, infrastructure security, or appsec). Experience with formal verification, invariant testing, or advanced fuzzing tools (Echidna, Foundry, Halmos, Certora). A track record in audit contests (Code4rena, Sherlock, Cantina) or bug bounty platforms (Immunefi, HackerOne). Public security research output, such as published findings, blog posts, conference talks, or contributions to open-source security tooling. Logistics Our interview process takes place on Google Meet and tends to consist of the following stages: Recruiter call (30 minutes) Manager interview (60 minutes) Technical interview (60 minutes) Paid work trial (paid code review assessment) Reference checks Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance. Benefits Meet your teammates at company gatherings around the world 😎 Enjoy the flexibility of fully remote work 🌎 Take the time you need with flexible time off 🏝 Grow your family with 8 weeks of paid leave for primary caregivers, 4 weeks for secondary caregivers, and a one-time $3,600 baby bonus 💙 Build your ideal home office with up to $500 in equipment support 🪑 Stay covered with medical insurance 🏥 Keep growing with learning and development opportunities 🧠 Get a monthly stipend for your preferred co-working space 💻 At OpenZeppelin , we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us! Use of AI as part of the recruiting process As part of OpenZeppelin’s recruitment process, we may use automated tools, including artificial intelligence, to assist in reviewing applications and assessing candidate qualifications. These tools are used to support our People team by identifying relevant skills and experience, and are not used to make decisions solely by automated means. All hiring decisions involve human review. Any personal data provided as part of your application will be processed in accordance with OpenZeppelin’s Data Privacy Notice . If you have questions about this recruitment process or would like to request human review of your application, please contact us at talent@openzeppelin.com.

Location: Anywhere The role: Being a web designer at B12 is being a main contributor to the success of the company! At B12, our web designers use our design suite to put together initial websites for our customers after drafts have already been made by our AI. You'll work closely with our customer success team and our other design experts to focus on what you love most--design! If you enjoy freelancing, designing websites, and working in an open and creative environment, then the web designer role with B12 is the right fit for you! As a web designer you will: Read and interpret customer briefs. Our current customers are small and medium-sized businesses ranging from cafés to real estate investment firms. Given a new customer's content and preferences, as well as a website that has been automatically generated for the customer, use our Design Suite (a largely WYSIWYG website editor with support for custom HTML5/CSS overrides) to put an initial website together for the customer in ~4 hours. Complete enhancement requests for existing customer websites, ranging from small changes to more complex customizations or design improvements. As a fast-growing platform, there will be adjacent opportunities as reviewers and mentors for the right candidates who wish to grow with us. In our experience with past customers, designers spend single-digit numbers hours on each project, with iterative feedback from our team. You might intersperse multiple customers’ project delivery while waiting on design feedback from the customer and our design lead. In addition to doing customer delivery work, you will be helping us co-design our Design Suite, as well as a workflow management tool called Orchestra. We have open sourced Orchestra, and are building it to empower creative and analytical experts in their work. You'll be a good fit if: You are remote or a local NYC web designer. You have excellent written English skills. You have 3-5 years of web design experience and are excited to do customer-focused website delivery. You have 1-2 years of HTML/CSS experience. You are available minimum 10 hours a week, maximum 20 hours a week. You are comfortable turning unstructured customer content and requests into into pixel-perfect web designs that work on all devices. You are excited to receive feedback from a customer success manager or an art director, and are equally excited to push back on design decisions you disagree with. You have desktop and mobile web design experience. You are happy to work on a customer deliverable for a few hours at a time, and then move on to a different customer's deliverable. You are excited to learn our Design Suite. You care about and want to contribute to our mission of helping people do meaningful work. Don't fear: We're flexible on the number of years of previous experience for this role. We highly favor talent and interest. Some candidates may see this list and feel discouraged because they don’t match all the items. Please apply anyway: there’s a good chance you’re more wonderful than you think you are. B12 is a safe place for human beings. We particularly encourage you to apply if you identify as a woman, are a person of color or other underrepresented minority, or are a member of the LGBTQIA community. Benefits: Get paid for your expertise, we value the skills you bring as a designer. Grow within our community - join other designers in our network (we actively use Slack) and get feedback to help you grow. Shape the future of work - we highly value your input and working together we hope to design tools to change the way we work. About B12 The workplace is undergoing rapid transformation, and B12 is on a mission to help people accomplish more at work. Orchestra , the engine behind B12’s Human-assisted A.I. model, is currently used to help teams of expert designers build and manage beautiful and professional websites. Leveraging A.I. to streamline complex workflows, B12 delivers superior outcomes for both creative experts and customers who receive a high-touch experience and a self-optimizing website in days, not weeks. Using intelligent software to automate repetitive tasks, B12 allows people to leverage their expertise where it matters most, paving the way to greater craftsmanship, superhuman productivity, and a brighter future of work. Backed by one of the best human-machine teams in the world, B12 recently closed its $12.4M Series A round led by General Catalyst Partners, Breyer Capital, Founder Collective, SV Angel, and more.

Location: San Francisco Launched in 2012, Koding, a fast-growing startup (with over a million users), is seeking a Senior Frontend Engineer to join its engineering ranks. Our product philosophy is "great design above all" . This is evidenced in the pixel perfection that we strive to achieve with our product. To get great design into the hands of the actual user, there's always the need for engineers who "get it." Key responsibilities will include creation of new UI feature sets in our core product offerings. Bridging the gap between creative ideation and functional, cutting-edge, web standards. Being involved in weekly tech shares and code reviews and staying abreast of the latest in front-end technology developments involving everything from our own KD Framework to build systems (gulp, grunt, webpack, browserify etc.), css precompilers (scss/less/stylus etc.), mvc frameworks (React, Angular, EmberJS etc.). Koding is a developer-focused startup based in San Francisco’s SOMA district. Our core product is: “Development Environments as a Service”. We offer feature rich cloud-based development environments that are complete with free VMs, an attractive code editor & sudo level terminal… all in a browser. Koding provides all you need to move your software development completely to the cloud. You will be up and running in minutes on your own cloud-based Linux boxes where you can learn programming languages like Ruby, Go, Java, NodeJS, PHP, C, C++, Perl, Python…the list goes on! You can experiment with installing/configuring/hacking Wordpress, Laravel, Django, Bootstrap and a slew of others or fire up a MySQL, Mongo, Postgres server with the click of a button. Our collaboration features allow you to pair-program with your friends and colleagues using audio-video and real time sharing of the entire development workspace. Leave your localhost behind and step into the future! More info: * https://www.linkedin.com/company/koding * https://www.crunchbase.com/organization/koding