Selini Capital

Location: Global Core C++ Developer – Crypto High-Frequency Trading About Selini: Selini is a global trading firm focused on systematic trading and venture investing. Overview We are seeking an exceptional Core C++ Developer to contribute to the development and optimization of our high-performance trading systems . This role focuses on building ultra-low-latency infrastructure, optimizing execution speed, and ensuring robust system reliability. The ideal candidate will have deep expertise in modern C/C++ , systems programming, and high-performance computing. Key Responsibilities Design, develop, and optimize low-latency, high-performance trading infrastructure in modern C/C++ (latest standards) . Implement efficient and scalable trading algorithms, order execution, and risk management systems . Deep understanding of exchange connectivity standards for market data and order entry Optimize CPU performance, memory management, and multi-threaded applications . Collaborate with quant researchers, traders, and infrastructure engineers to improve system performance. Profile, benchmark, and debug real-time systems to minimize latency and maximize throughput. Maintain robust and fault-tolerant system components for continuous trading operations . Required Qualifications Expert-level proficiency in C++ , with a strong grasp of modern C++ features (C++17/20/23/26) . Extensive experience in low-latency, high-performance systems programming . Deep understanding of networking (TCP/UDP), concurrency, and multi-threading . Strong experience in Linux-based development and performance tuning . Experience with real-time, high-throughput systems where performance is critical. Background in crypto or traditional finance trading systems Soft Skills & Culture Fit Candidates with exceptional academic or industry backgrounds. Strong analytical skills and ability to work in high-pressure, real-time environments . Collaborative team player who enjoys solving complex engineering problems . We’re a close-knit team that values: High ownership and initiative Curiosity, intellectual honesty, and rapid learning Clear, direct communication Working together toward shared goals — no ego, no politics Compensation & Benefits: Very competitive compensation, with strong upside based on contribution and performance Competitive holiday allowance Free daily Deliveroo lunch High-spec office and technology Team socials Global company offsites and development opportunities

Location: London, Singapore Selini Capital - Job Description Role: Quantitative Researcher Location: London, Singapore Working Pattern: Office-Based About Selini: Selini is a global trading firm focused on systematic trading and venture investing, all within the digital assets space. The Role: Selini Capital is seeking a highly analytical and technically gifted Quantitative Researcher to join our high-frequency trading team. In this role, you’ll focus on refining features, designing better models, and advancing core research pipelines. You’ll collaborate closely with other researchers and engineers to push the boundaries of what’s possible in highly competitive electronic markets. The ideal candidate is a curious, rigorous thinker with a strong technical foundation and a bias toward empirical validation. You enjoy working with data, building systems to understand it, and using that understanding to drive performance. Responsibilities: As a Quantitative Researcher, you will: Design, test, and refine features and model architectures to improve prediction and execution performance Develop and improve research pipelines and tools for large-scale strategy simulation and optimization on a cutting-edge compute cluster Conduct deep-dive analyses of market data, live strategy behavior, and model outputs to guide iterative improvements Stay up-to-date on advances in quantitative methods, ML, and optimization applying new insights to real-world challenges Why This Role Is Unique: Research First - This role is research-heavy you’ll be focused on signal improvement, model fidelity, and hypothesis generation, not plumbing infrastructure or devops. Breadth and Depth - You’ll work at every level of the alpha stack: from feature design and statistical modeling to optimizer tuning Direct Feedback Loop - We deploy and iterate quickly. Your work will feed directly into live strategies and have measurable real-world impact World-Class Environment - Join a high-talent, low-ego team with experience across elite trading firms, olympiads, and academic research Core Qualifications: 1–5 years of experience in quantitative research, applied ML, or statistics Fluency in Python and/or C++, with the ability to translate research concepts into performant, production-ready implementations Strong knowledge of algorithms, linear algebra, statistics, and optimization techniques Ability to uncover meaningful structure in noisy, high-frequency market data — from alpha signal extraction to modeling order book behavior Can take research ideas from concept to experimental evaluation with minimal supervision Signals of Excellence: Track record of PNL generation using model-driven strategies Outstanding academic record in a quantitative field Strong performance in competitive programming or quantitative olympiads Company Culture & Team Fit: We’re a close-knit team that values: High ownership and initiative Curiosity, intellectual honesty, and rapid learning Clear, direct communication Working together toward shared goals no ego, no politics We hire people who love building, solving, and improving and who want to learn from and contribute to a team of exceptional peers. Compensation & Benefits: Very competitive compensation, with strong upside based on contribution and performance Competitive holiday allowance Pension contribution and medical cover Free daily Deliveroo lunch High-spec office and technology Team socials Global company offsites and development opportunities

Location: Open to location Selini Capital FZE - Job Description Role: OTC Sales Working Pattern: Office-Based with travel required About Selini: Selini is a leading crypto firm operating exclusively in the digital asset space. Our team brings together a deep blend of crypto-native talent and institutional finance experience, with expertise across research, technology, and infrastructure. The Role: Selini Capital is seeking an experienced Crypto OTC Sales professional where you’ll serve as the primary point of contact for clients. The role combines financial markets expertise, sales acumen, and a deep understanding of digital assets. You will have the opportunity to have an impact on OTC growth, working closely with our best in class business development teams. Responsibilities: Support and grow the firm’s OTC operations alongside an international team. This includes client coverage as well as ongoing business development responsibilities. Leverage your in-depth knowledge of the cryptocurrency market and trends to provide clients with actionable insights. Ensure smooth OTC operations by working closely with local and global colleagues to provide consistent client coverage and support. Collaborate with the business development team to shape and execute the overall OTC sales strategy. Utilize internal market research and commentary to enhance client engagement and deliver added value; the ability to independently generate market insights is a strong asset. Represent the firm at industry conferences, events, and networking opportunities to grow the client base and stay informed on evolving market dynamics. Requirements: Solid experience from previous Crypto OTC Sales or broking role, including execution and pricing. Exceptional understanding of cryptocurrency markets and projects/assets and trends/narratives. A well-established OTC client network which includes strong relationships with foundations, HNWIs, funds and family offices. Excellent communication skills with proven track record in client facing and business development roles. Minimum Bachelor’s degree in a quantitative or related field, such as Mathematics, Physics, Computer Science, Economics, Finance, or Engineering. Why This Role Is Unique: Elite Teammates You’ll be joining a small, world-class team of engineers, quants, and traders with backgrounds in top-tier firms, academic institutions, and olympiad-level programming competitions. Startup Velocity We move fast, deploy frequently, and make decisions quickly. Your work will in a high performing, nimble environment and have immediate real-world impact. This is an ideal role for someone who sees themselves as a reputable OTC Sales professional and is ready to apply that talent to one of the most cutting-edge environments in finance and crypto. Company Culture & Team Fit: We’re a close-knit team that values: High ownership and initiative Curiosity, intellectual honesty, and rapid learning Clear, direct communication Working together toward shared goals — no ego, no politics We hire people who love building, solving, and improving — and who want to learn from and contribute to a team of exceptional peers. Compensation & Benefits: Very competitive compensation, with strong upside based on contribution and performance Unlimited holiday policy Participation in company health insurance and retirement options Free daily Deliveroo lunch High-spec office and high-spec technology Team socials Global offsites and development opportunities

Location: London, Singapore Selini Capital - Job Description Role: Quantitative Researcher Location: London, Singapore Working Pattern: Office-Based About Selini: Selini is a global trading firm focused on systematic trading and venture investing, all within the digital assets space. The Role: Selini Capital is seeking a highly analytical and technically gifted Quantitative Researcher to join our high-frequency trading team. In this role, you’ll focus on refining features, designing better models, and advancing core research pipelines. You’ll collaborate closely with other researchers and engineers to push the boundaries of what’s possible in highly competitive electronic markets. The ideal candidate is a curious, rigorous thinker with a strong technical foundation and a bias toward empirical validation. You enjoy working with data, building systems to understand it, and using that understanding to drive performance. Responsibilities: As a Quantitative Researcher, you will: Design, test, and refine features and model architectures to improve prediction and execution performance Develop and improve research pipelines and tools for large-scale strategy simulation and optimization on a cutting-edge compute cluster Conduct deep-dive analyses of market data, live strategy behavior, and model outputs to guide iterative improvements Stay up-to-date on advances in quantitative methods, ML, and optimization — applying new insights to real-world challenges Why This Role Is Unique: Research First - This role is research-heavy — you’ll be focused on signal improvement, model fidelity, and hypothesis generation, not plumbing infrastructure or devops. Breadth and Depth - You’ll work at every level of the alpha stack: from feature design and statistical modeling to optimizer tuning Direct Feedback Loop - We deploy and iterate quickly. Your work will feed directly into live strategies and have measurable real-world impact World-Class Environment - Join a high-talent, low-ego team with experience across elite trading firms, olympiads, and academic research Core Qualifications: 2-7 years of experience in quantitative research, applied ML, or statistics Fluency in Python and/or C++, with the ability to translate research concepts into performant, production-ready implementations Strong knowledge of algorithms, linear algebra, statistics, and optimization techniques Ability to uncover meaningful structure in noisy, high-frequency market data — from alpha signal extraction to modeling order book behavior Can take research ideas from concept to experimental evaluation with minimal supervision Signals of Excellence: Track record of PNL generation using model-driven strategies Outstanding academic record in a quantitative field Strong performance in competitive programming or quantitative olympiads Company Culture & Team Fit: We’re a close-knit team that values: High ownership and initiative Curiosity, intellectual honesty, and rapid learning Clear, direct communication Working together toward shared goals — no ego, no politics We hire people who love building, solving, and improving — and who want to learn from and contribute to a team of exceptional peers. Compensation & Benefits: Very competitive compensation with strong upside based on contribution and performance, comprehensive benefits package. Free lunch ordered to the office every day. Opportunity to work with cutting-edge technology in a challenging and rewarding environment. Chance to make a significant impact on the firm's trading performance. Collaborative and intellectually stimulating work environment. Competitive Annual Leave and Pension Contribution High-spec office with state of the art equipment and standing desks Monthly team breakfast Regular London onsites with focus groups in different business coinciding with team dinners and evening events Annual Company Offsite in luxury location Inter-office travel encouraged to promote the Selini culture and cross-business unit collaboration