Staff Systems Engineer – Low Latency, Networking
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Job Description
Senior Engineer at Jito Labs architecting high-performance distributed systems on Solana. Debugging complex problems across application code, OS, hardware behavior, and network protocols.
Responsibilities:
- Debug and optimize network performance end-to-end: NIC tuning, congestion control, packet pacing, queueing disciplines
- Analyze traffic using tcpdump, Wireshark, and custom tooling; reason about protocol behavior under load
- Work with protocols beyond TCP/UDP when required (e.g., ICMP, IGMP, multicast)
- Experience with high-performance I/O and kernel-bypass techniques such as DPDK, XDP, io_uring, or similar
- Read and reason about Linux kernel source when debugging requires it
- Understand networking stack internals (socket buffers, congestion control, netfilter, scheduling interactions)
- Build bespoke tooling when existing observability is insufficient
- Work fluently with kernel interfaces used by performance-sensitive systems
- Use hardware performance counters, perf, eBPF, and flamegraphs to locate real bottlenecks
- Reason about practical CPU behavior: cacheline contention, branch misprediction, NUMA effects, memory ordering
- Understand IRQ affinity, scheduling behavior, paging, and TLB effects under real workloads
- Strong low-level systems programming background
- We work primarily in Rust, but strong experience in C or C++ is equally relevant
- Solid understanding of algorithms, data structures, and writing correct concurrent code
- Contribute to infrastructure, tooling, and occasionally upstream projects
Requirements:
- 10+ years of experience in systems programming, networking, or performance-critical infrastructure
- Deep Linux expertise, including kernel behavior, networking internals, and performance tuning
- Proficiency with packet analysis and network debugging tools
- Experience with performance profiling and tracing (perf, eBPF, flamegraphs, etc.)
- Strong programming fundamentals; depth matters more than language
- Track record of diagnosing complex issues spanning application, OS, and hardware layers
- Clear, direct communication.
Benefits:
- Salary based on experience
- Above-market total compensation and multiple forms of equity
- 100% employer-paid health benefits
- All-expenses-paid team retreats and conferences
- Weekly meal voucher
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