Infrastructure Engineer​/Linux Performance Engineer

We're looking for an Infrastructure Engineer who thrives on squeezing every microsecond out of a system. You'll own
the performance, reliability, and automation of our bare-metal trading infrastructure in an environment where latency
is measured in nanoseconds, and every kernel tuning decision matters. If you're the kind of engineer who reads kernel
change logs for fun and has opinions about NIC ring buffer sizes, we'd love to talk!

• Own and optimize our bare-metal Linux infrastructure end-to-end — from BIOS/firmware settings through
  kernel tuning to application-level performance.
• Implement and maintain precision time synchronization (PTP/PPS) across the trading environment, ensuring
  nanosecond-level accuracy.
• Configure and tune kernel-bypass networking (Onload / Open Onload, DPDK, or similar) for ultra-low-latency
  market data and order paths.
• Profile and eliminate latency at every layer: hardware interrupts, CPU isolation and pinning, NUMA topology,
  memory allocation, network stack.
• Build and maintain CI/CD pipelines and infrastructure-as-code for repeatable, auditable deployments across
  physical hosts.
• Develop monitoring and observability tooling focused on latency distribution, jitter, and tail-latency anomalies
  — not just uptime.
• Collaborate with quantitative developers and trading teams to understand workload characteristics and codesign infrastructure around them.
• Manage network infrastructure including switch configuration, multicast, and colocation connectivity where
  applicable.

• 4+ years in a Linux infrastructure, SRE, or performance engineering role — experience in an HFT or electronic
  trading firm is strongly preferred.
• Deep Linux systems knowledge: kernel tuning (sysctl, cgroups, isolcpus, tickless kernels), scheduling policies,
  memory management, and storage I/O.
• Hands-on experience with kernel-bypass networking — Solarflare/Xilinx Onload, , DPDK, or similar
  frameworks.
• Solid understanding of PTP (IEEE 1588), PPS, and time synchronization architecture at scale.
• Strong scripting and automation skills (Bash, Python) and experience with configuration management tools
  (Ansible, Salt, or similar).
• Experience with CI/CD tooling (Jenkins, Git Lab CI, or similar) in a bare-metal or on-prem context.
• Comfort working with hardware: server selection, NIC selection and firmware, BIOS tuning, and colocation
  environments.
• Familiarity with performance profiling tools: perf, ftrace, flame graphs, eBPF/bpftrace, cyclic test.

• Experience with FPGA-based networking or hardware time stamping.
• Knowledge of market data protocols (ITCH, OUCH, FIX) or exchange connectivity.
• Familiarity with Infini Band or RoCE fabrics.
• Experience with compliance and security standards relevant to financial environments (ISO 27001, SOC
  2).
• Exposure to container technologies (Docker, Kubernetes) for non-latency-critical workloads and tooling

Barak Capital Market Making is a technology-driven proprietary trading firm and an official market maker on major exchanges worldwide. Our Amsterdam office, established in 2021, is a new venture to expand our trading knowledge across Europe. We are a team of ambitious traders, researchers, and developers who believe that the fusion of mathematics, technology and people is the key to creating efficient, fair, and transparent markets.

At Barak, we don't just follow market trends – we use data-driven predications to stay ahead of them.

Form of employment:
Temporary employment