Bullish
digital asset industry
LeadEngineer,TradingPlatformEngineering
“Lead Engineer, Trading Platform Engineering at Bullish. Skills: High-performance systems, Low-latency systems, Linux kernel internals, Networking pipelines, Distributed systems architecture, C, Java. Design, build, and optimize high-performance systems using C and Java. Engineer performance-critical components across user space and kernel interfaces, focusing on memory, scheduling, I/O, and networking paths”
What You'll Achieve.
Engineering the institutional standard for the digital asset industry; Build a platform where security and compliance are the foundational core; Setting a high bar in a demanding environment; Own the outcome from concept to deployment; Relentless elimination of tail latency
Industry & Context.
Problem solvers; Navigate the unknown; Bring structure to ambiguity; High-impact technical challenges
What They're Looking For.
Must Have
Expert-level proficiency in Java, Deep understanding of Linux kernel internals, including memory management, driver models, and scheduler tuning, Practical experience in end-to-end latency optimization, jitter reduction, and techniques like lock-free or wait-free programming, Experience with socket options, buffer sizing, epoll, io_uring, RSS, and NIC queue configuration, Understanding of sequencer-based total order broadcast, partial order broadcast and the tradeoffs between latency, throughput, and availability, Solid understanding of concurrency, synchronization primitives, and memory models, A focus on measurement over assumption, using benchmarks and profiles to drive decisions and communicate complex tradeoffs, Commitment to high code quality through rigorous reviews, mentoring, and clear documentation
Nice to Have
Experience in financial markets (e.g., market data, order routing, or FIX/exchange-native protocols), Familiarity with PTP or other high-precision time synchronization for low-latency environments, Experience using eBPF and tracing for observability in production, Knowledge of RDMA, NIC offloads (TSO, LRO), or experience maintaining kernel modules and device drivers, Experience with low-latency JVM practices and deterministic GC tuning for Java-based systems, Deep knowledge of benchmarking methodology, including workload design and variance analysis
What You'll Do.
and optimize high-performance systems using C and Java
Engineer performance-critical components across user space and kernel interfaces
Develop and tune networking pipelines (multicast/unicast UDP and TCP) and implement kernel-bypass or fast-path networking (e.g.
Interact with and optimize Linux kernel subsystems
including memory management
and filesystems (VFS)
Optimize systems for deterministic latency through CPU isolation
and lock contention reduction
Apply distributed systems patterns
such as sequencer (virtual synchrony)
for total ordering and consistency
and flame graphs to identify and eliminate system bottlenecks
Collaborate cross-functionally to deliver robust production systems with clear SLOs
reproducible performance tests
and actionable runbooks
How You'll Work.
Team & Collaboration
Collaborate cross-functionally to deliver robust production systems
Communication Scope
Communicate complex tradeoffs
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