Bullish, Inc.
Lead Engineer, Trading Platform EngineeringApplylocations: Londontime type: Full timeposted on: Posted Yesterdayjob requisition id: JR About Bullish Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange - a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong, and Gibraltar. CoinDesk Indices - a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. CoinDesk Data - a broad suite of digital assets market data and analytics, providing real-time insights into prices, trends, and market dynamics. CoinDesk Insights - a digital asset media and events provider and operator of a digital media platform that covers news and insights about digital assets, the underlying markets, policy, and blockchain technology. Reports to: Director, Engineering Engineering Organization & Culture At Bullish, we are engineering the institutional standard for the digital asset industry. Our mission is to build a platform where security and compliance are the foundational core, requiring a commitment to technical excellence that goes beyond simply delivering code. We operate as a global engineering organization, setting a high bar in a demanding environment for those driven to do the best work of their careers alongside world-class peers.We value engineers who treat development as a craft and own the outcome from concept to deployment. You will be expected to navigate the unknown, bring structure to ambiguity, and help shape the frameworks and processes that drive our global teams forward. We refuse to compromise on quality and seek problem solvers who thrive on high-impact technical challenges. The Team: Trading Platform Engineering The Trading Platform Engineering team is responsible for designing and optimizing the high-performance, mission-critical foundation that powers our trading activities. Operating at the intersection of software and hardware, the team builds low-latency systems that demand expert-level proficiency in Linux kernel internals, networking pipelines, and distributed systems architecture. The team focuses on architectural excellence, reliability, determinism, and the relentless elimination of tail latency. What You'll Do High-Performance Service Development: Design, build, and optimize high-performance systems using C and Java. Kernel & User Space Engineering: Engineer performance-critical components across user space and kernel interfaces, focusing on memory, scheduling, I/O, and networking paths. Advanced Networking: Develop and tune networking pipelines (multicast/unicast UDP and TCP) and implement kernel-bypass or fast-path networking (e.g., DPDK, XDP). Kernel Optimization: Interact with and optimize Linux kernel subsystems, including memory management, schedulers, device drivers, and filesystems (VFS). Latency & Determinism: Optimize systems for deterministic latency through CPU isolation, thread pinning, NUMA locality, cache awareness, and lock contention reduction. Distributed Systems: Apply distributed systems patterns, such as sequencer (virtual synchrony), for total ordering and consistency. Profiling & Debugging: Use tools like perf, strace, eBPF, and flame graphs to identify and eliminate system bottlenecks. Operational Excellence: Collaborate cross-functionally to deliver robust production systems with clear SLOs, reproducible performance tests, and actionable runbooks. What You'll Bring Language Mastery: Expert-level proficiency in Java Linux Internals: Deep understanding of Linux kernel internals, including memory management, driver models, and scheduler tuning. Low-Latency Expertise: Practical experience in end-to-end latency optimization, jitter reduction, and techniques like lock-free or wait-free programming. Networking Depth: Experience with socket options, buffer sizing, epoll, io\_uring, RSS, and NIC queue configuration. Distributed Systems Knowledge: Understanding of sequencer-based total order broadcast, partial order broadcast and the tradeoffs between latency, throughput, and availability. Concurrency & Systems: Solid understanding of concurrency, synchronization primitives, and memory models. Analytical Mindset: A focus on measurement over assumption, using benchmarks and profiles to drive decisions and communicate complex tradeoffs. Collaborative Craftsmanship: Commitment to high code quality through rigorous reviews, mentoring, and clear documentation. Nice To Haves Trading Infrastructure: Experience in financial markets (e.g., market data, order routing, or FIX/exchange-native protocols). Time Synchronization: Familiarity with PTP or other high-precision time synchronization for low-latency environments. Observability: Experience using eBPF and tracing for observability in production. Hardware Interfacing: Knowledge of RDMA, NIC offloads (TSO, LRO), or experience maintaining kernel modules and device drivers. JVM Tuning: Experience with low-latency JVM practices and deterministic GC tuning for Java-based systems. Advanced Benchmarking: Deep knowledge of benchmarking methodology, including workload design and variance analysis. Bullish is proud to be an equal opportunity employer. We are fast evolving and striving towards being a globally-diverse community. With integrity at our core, our success is driven by a talented team of individuals and the different perspectives they are encouraged to bring to work every day.
Lead Engineer, Trading Platform EngineeringApplylocations: Londontime type: Full timeposted on: Posted Yesterdayjob requisition id: JR About Bullish Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange - a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong, and Gibraltar. CoinDesk Indices - a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. CoinDesk Data - a broad suite of digital assets market data and analytics, providing real-time insights into prices, trends, and market dynamics. CoinDesk Insights - a digital asset media and events provider and operator of a digital media platform that covers news and insights about digital assets, the underlying markets, policy, and blockchain technology. Reports to: Director, Engineering Engineering Organization & Culture At Bullish, we are engineering the institutional standard for the digital asset industry. Our mission is to build a platform where security and compliance are the foundational core, requiring a commitment to technical excellence that goes beyond simply delivering code. We operate as a global engineering organization, setting a high bar in a demanding environment for those driven to do the best work of their careers alongside world-class peers.We value engineers who treat development as a craft and own the outcome from concept to deployment. You will be expected to navigate the unknown, bring structure to ambiguity, and help shape the frameworks and processes that drive our global teams forward. We refuse to compromise on quality and seek problem solvers who thrive on high-impact technical challenges. The Team: Trading Platform Engineering The Trading Platform Engineering team is responsible for designing and optimizing the high-performance, mission-critical foundation that powers our trading activities. Operating at the intersection of software and hardware, the team builds low-latency systems that demand expert-level proficiency in Linux kernel internals, networking pipelines, and distributed systems architecture. The team focuses on architectural excellence, reliability, determinism, and the relentless elimination of tail latency. What You'll Do High-Performance Service Development: Design, build, and optimize high-performance systems using C and Java. Kernel & User Space Engineering: Engineer performance-critical components across user space and kernel interfaces, focusing on memory, scheduling, I/O, and networking paths. Advanced Networking: Develop and tune networking pipelines (multicast/unicast UDP and TCP) and implement kernel-bypass or fast-path networking (e.g., DPDK, XDP). Kernel Optimization: Interact with and optimize Linux kernel subsystems, including memory management, schedulers, device drivers, and filesystems (VFS). Latency & Determinism: Optimize systems for deterministic latency through CPU isolation, thread pinning, NUMA locality, cache awareness, and lock contention reduction. Distributed Systems: Apply distributed systems patterns, such as sequencer (virtual synchrony), for total ordering and consistency. Profiling & Debugging: Use tools like perf, strace, eBPF, and flame graphs to identify and eliminate system bottlenecks. Operational Excellence: Collaborate cross-functionally to deliver robust production systems with clear SLOs, reproducible performance tests, and actionable runbooks. What You'll Bring Language Mastery: Expert-level proficiency in Java Linux Internals: Deep understanding of Linux kernel internals, including memory management, driver models, and scheduler tuning. Low-Latency Expertise: Practical experience in end-to-end latency optimization, jitter reduction, and techniques like lock-free or wait-free programming. Networking Depth: Experience with socket options, buffer sizing, epoll, io\_uring, RSS, and NIC queue configuration. Distributed Systems Knowledge: Understanding of sequencer-based total order broadcast, partial order broadcast and the tradeoffs between latency, throughput, and availability. Concurrency & Systems: Solid understanding of concurrency, synchronization primitives, and memory models. Analytical Mindset: A focus on measurement over assumption, using benchmarks and profiles to drive decisions and communicate complex tradeoffs. Collaborative Craftsmanship: Commitment to high code quality through rigorous reviews, mentoring, and clear documentation. Nice To Haves Trading Infrastructure: Experience in financial markets (e.g., market data, order routing, or FIX/exchange-native protocols). Time Synchronization: Familiarity with PTP or other high-precision time synchronization for low-latency environments. Observability: Experience using eBPF and tracing for observability in production. Hardware Interfacing: Knowledge of RDMA, NIC offloads (TSO, LRO), or experience maintaining kernel modules and device drivers. JVM Tuning: Experience with low-latency JVM practices and deterministic GC tuning for Java-based systems. Advanced Benchmarking: Deep knowledge of benchmarking methodology, including workload design and variance analysis. Bullish is proud to be an equal opportunity employer. We are fast evolving and striving towards being a globally-diverse community. With integrity at our core, our success is driven by a talented team of individuals and the different perspectives they are encouraged to bring to work every day.
Bullish, Inc.
About BullishBullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange - a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong, and Gibraltar. CoinDesk Indices - a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. CoinDesk Data - a broad suite of digital assets market data and analytics, providing real-time insights into prices, trends, and market dynamics. CoinDesk Insights - a digital asset media and events provider and operator of a digital media platform that covers news and insights about digital assets, the underlying markets, policy, and blockchain technology.Reports to:Manager, Product DesignBullish is seeking a Senior Product Designer with deep expertise in trading platforms to own end-to-end design of our exchange products. You'll design the complex, real-time tools that traders rely on daily. You have lived and breathed trading products -requiring fluency in order books, execution flows, market data visualization, and professional workflows. You'll have outsized impact on product strategy, user trust, and Bullish's competitive positioning in crypto. Designing the tools that traders rely on every day to navigate digital asset markets. These problems are genuinely hard, complex UX workflows, in one of the fastest-moving and most interesting markets in the world. Your domain expertise will be just as important as your craft.AI/LLM integration is core to how we design. We're building an AI-native design culture, and you'll help shape that evolution. Every designer on our team uses AI tools daily-not as an experiment, but as a fundamental part of our workflow. We're looking for someone already fluent in tools like Claude (Cowork, Design, and Code), OpenAI Codex, Google Gemini, or similar-someone who has integrated these tools into their actual practice and has a point of view on where AI-assisted design is headed.What You'll DoOwn end-to-end design of complex, data-rich trading interfaces. From spot and derivatives trading, portfolio management, order entry, and market analysis tools-you'll make powerful functionality feel intuitive without oversimplifying.Translate deep understanding of trading workflows into strategic design decisions. Work directly with Product Managers and Engineers to define what we build, not just how it looks. Your domain expertise will make you a strategic partner, not just an executor.Leverage AI tools daily to accelerate design workflows-rapid prototyping with AI, LLM-powered research synthesis, generating design variations at scale, and building design-to-code workflows. Push the boundaries of what's possible, not just check boxes.Ship end-to-end: from problem framing and user research through high-fidelity design, prototyping, developer handoff, and visual QA. Own quality through production.Partner with Product, Engineering, and data teams on strategy, prioritization, and tradeoff decisions grounded in user insight and market understanding.Evolve our design system with components and patterns built for trading data tables, charts, order entry, and real-time data displays-ensuring consistency and scalability across the platform.Champion trader insights internally. Bring user research, competitive analysis, and domain knowledge to every product conversation.Contribute to the development and evolution of design processes, libraries, and best practices-including AI integration playbooks.What We're Looking For5+ years designing complex, data-driven products with significant experience on trading platforms, exchange products, or professional financial tools. This is a core requirement, not negotiable.Deep, fluent domain expertise in trading and exchange products. You should understand order types, market microstructure, liquidity, charting, portfolio analytics, and professional trader workflows. Ideally, you've used these products yourself.Daily, demonstrated use of AI/LLM tools in your design practice. Show us in your portfolio or in conversation: How has Claude, Gemini, Figma AI, or similar tools changed the way you design? We want to see integration, not experiments. Experience with Claude (especially Design/Code products) or equivalent is preferred.High agency. You don't wait for perfect briefs or complete information. You identify what matters, make decisions, and move. When you hit blockers, you find a way around them.A strong portfolio of shipped trading or financial products that demonstrates your ability to handle complexity, density, and real-time data without sacrificing usability or craft.Case studies showing your complete design process-from research and ideation through validation and outcomes.Systems thinking. You see how individual features connect to the broader product ecosystem and design holistically across workflows.Expert-level Figma skills and experience with modern prototyping tools.Excellent communication and storytelling. You can articulate design rationale to Engineers, Product Managers, leadership, and traders in language each audience understands.Proven ability to influence stakeholders and advocate for design decisions backed by research and user insight.Experience working in Agile environments and collaborating closely with cross-functional teams across global time zones.Ability to work efficiently in fast-paced, ambiguous environments. You drive clarity rather than wait for it.Results-oriented, adaptable, and passionate about creative problem-solving. You're collaborative, positive, and genuinely passionate about resolving user pain points through thoughtful design.Bullish is proud to be an equal opportunity employer. We are fast evolving and striving towards being a globally-diverse community. With integrity at our core, our success is driven by a talented team of individuals and the different perspectives they are encouraged to bring to work every day.
About BullishBullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange - a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong, and Gibraltar. CoinDesk Indices - a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. CoinDesk Data - a broad suite of digital assets market data and analytics, providing real-time insights into prices, trends, and market dynamics. CoinDesk Insights - a digital asset media and events provider and operator of a digital media platform that covers news and insights about digital assets, the underlying markets, policy, and blockchain technology.Reports to:Manager, Product DesignBullish is seeking a Senior Product Designer with deep expertise in trading platforms to own end-to-end design of our exchange products. You'll design the complex, real-time tools that traders rely on daily. You have lived and breathed trading products -requiring fluency in order books, execution flows, market data visualization, and professional workflows. You'll have outsized impact on product strategy, user trust, and Bullish's competitive positioning in crypto. Designing the tools that traders rely on every day to navigate digital asset markets. These problems are genuinely hard, complex UX workflows, in one of the fastest-moving and most interesting markets in the world. Your domain expertise will be just as important as your craft.AI/LLM integration is core to how we design. We're building an AI-native design culture, and you'll help shape that evolution. Every designer on our team uses AI tools daily-not as an experiment, but as a fundamental part of our workflow. We're looking for someone already fluent in tools like Claude (Cowork, Design, and Code), OpenAI Codex, Google Gemini, or similar-someone who has integrated these tools into their actual practice and has a point of view on where AI-assisted design is headed.What You'll DoOwn end-to-end design of complex, data-rich trading interfaces. From spot and derivatives trading, portfolio management, order entry, and market analysis tools-you'll make powerful functionality feel intuitive without oversimplifying.Translate deep understanding of trading workflows into strategic design decisions. Work directly with Product Managers and Engineers to define what we build, not just how it looks. Your domain expertise will make you a strategic partner, not just an executor.Leverage AI tools daily to accelerate design workflows-rapid prototyping with AI, LLM-powered research synthesis, generating design variations at scale, and building design-to-code workflows. Push the boundaries of what's possible, not just check boxes.Ship end-to-end: from problem framing and user research through high-fidelity design, prototyping, developer handoff, and visual QA. Own quality through production.Partner with Product, Engineering, and data teams on strategy, prioritization, and tradeoff decisions grounded in user insight and market understanding.Evolve our design system with components and patterns built for trading data tables, charts, order entry, and real-time data displays-ensuring consistency and scalability across the platform.Champion trader insights internally. Bring user research, competitive analysis, and domain knowledge to every product conversation.Contribute to the development and evolution of design processes, libraries, and best practices-including AI integration playbooks.What We're Looking For5+ years designing complex, data-driven products with significant experience on trading platforms, exchange products, or professional financial tools. This is a core requirement, not negotiable.Deep, fluent domain expertise in trading and exchange products. You should understand order types, market microstructure, liquidity, charting, portfolio analytics, and professional trader workflows. Ideally, you've used these products yourself.Daily, demonstrated use of AI/LLM tools in your design practice. Show us in your portfolio or in conversation: How has Claude, Gemini, Figma AI, or similar tools changed the way you design? We want to see integration, not experiments. Experience with Claude (especially Design/Code products) or equivalent is preferred.High agency. You don't wait for perfect briefs or complete information. You identify what matters, make decisions, and move. When you hit blockers, you find a way around them.A strong portfolio of shipped trading or financial products that demonstrates your ability to handle complexity, density, and real-time data without sacrificing usability or craft.Case studies showing your complete design process-from research and ideation through validation and outcomes.Systems thinking. You see how individual features connect to the broader product ecosystem and design holistically across workflows.Expert-level Figma skills and experience with modern prototyping tools.Excellent communication and storytelling. You can articulate design rationale to Engineers, Product Managers, leadership, and traders in language each audience understands.Proven ability to influence stakeholders and advocate for design decisions backed by research and user insight.Experience working in Agile environments and collaborating closely with cross-functional teams across global time zones.Ability to work efficiently in fast-paced, ambiguous environments. You drive clarity rather than wait for it.Results-oriented, adaptable, and passionate about creative problem-solving. You're collaborative, positive, and genuinely passionate about resolving user pain points through thoughtful design.Bullish is proud to be an equal opportunity employer. We are fast evolving and striving towards being a globally-diverse community. With integrity at our core, our success is driven by a talented team of individuals and the different perspectives they are encouraged to bring to work every day.