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Staff Systems Engineer – Low Latency & NetworkingJito.wtf • Saint Paul, Illinois, United States
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Staff Systems Engineer – Low Latency & Networking

Jito.wtf
  • US
    Saint Paul, Illinois, United States
  • US
    Saint Paul, Illinois, United States
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À propos

Jito Labs is architecting the future of high-performance distributed systems on Solana. We’re the team behind Jito-Solana, the leading MEV Solana client, and the Jito Block Engine, which has generated roughly 4.5 million SOL for validators and stakers over the past year. Our latest product, BAM, reimagines Solana market structure and the transaction supply chain with a heavy emphasis on performance, reliability, and transaction privacy. We are building systems that operate at the edge of what modern hardware and networks can sustain. We’re looking for a senior engineer who is comfortable working across application code, operating systems, hardware behavior, and network protocols – someone who enjoys debugging the kinds of problems where the root cause might live anywhere in the stack. About the Position:
We build latency-sensitive infrastructure where microseconds matter and root causes are rarely obvious. This role is for someone who can move comfortably between application code, kernel internals, hardware behavior, and network protocols – debugging a TCP retransmission anomaly one day and reasoning about memory contention the next. You should be as comfortable reading kernel source and packet captures as you are writing production Rust. Much of the work involves ambiguous, cross-layer problems where existing tools and playbooks are insufficient and new ones must be created. This is a senior role for someone who has previously been the person others escalate to when nobody else can find the root cause. You’ll work across: Networking
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 Linux Systems
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 Hardware & Performance
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 Willing to read assembly when the situation calls for it Software Development #J-18808-Ljbffr
  • Saint Paul, Illinois, United States

Compétences linguistiques

  • English
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