MA CAPITAL U.S. LLC · 2 weeks ago
Senior Linux Engineer
Chicago, IL
Full-time
Onsite
Senior Level
7+ years expMA Capital US LLC is a proprietary trading firm specializing in systematic and high-performing discretionary strategies across multiple asset classes. They are seeking a Senior Linux Engineer to design, optimize, and support ultra-low-latency Linux systems that power their trading strategies, focusing on performance tuning and infrastructure reliability.
Financial ServicesRisk ManagementTrading Platform
Hiring Manager
Jessica Alger
Responsibilities
Linux Performance Engineering: Design, deploy, and maintain Linux systems optimized for ultra-low latency and deterministic performance
Kernel & OS Tuning: Perform CPU isolation, IRQ affinity, NUMA alignment, huge page configuration, BIOS optimization, and power-state tuning
Profiling & Diagnostics: Analyze system performance using perf, ftrace, eBPF, systemtap, and other advanced tools
Hardware Optimization: Configure high-performance servers, optimize NIC offloads, PCIe layout, and memory settings, and validate improvements with microsecond-level benchmarks
Networking & Market Data: Support high-speed multicast market data environments, tune TCP/UDP stack parameters, and partner with developers/traders to optimize performance across OS and hardware layers
Automation & Observability: Automate provisioning with Ansible/Terraform and maintain monitoring via Prometheus, custom exporters, low-latency logging, and precise time sync (PTP, PPS)
Reliability & Support: Ensure high availability for latency-critical systems, contribute to on-call rotation, develop documentation and runbooks, and lead root-cause investigations for performance anomalies
Qualification
Required
7–10+ years of experience with Linux engineering (RHEL/Rocky/Alma, Ubuntu) and deep knowledge of scheduling, NUMA, memory, networking, and filesystems
Proven experience optimizing production systems for ultra-low latency and high throughput
Strong proficiency with kernel parameters, sysctl tuning, IRQ balancing, NIC configuration, and CPU topology
Advanced scripting abilities in Bash and Python
Experience with high-end NICs, FPGA adapters, NVMe storage, or performance-critical compute systems
Solid understanding of market data, multicast networking, or other real-time, high-throughput environments
Familiarity with perf, ftrace, bcc/eBPF, sar, strace, tcpdump, etc
Benefits
Comprehensive Health Coverage: Includes medical, dental, and vision insurance.
401(k) Retirement Plan: Helping you and your family plan for a secure financial future.
Company
MA CAPITAL U.S. LLC
We are a nimble trading firm focused on maximizing the opportunities of alpha generation through innovation in data science, technology and risk management, brought together with rigorous discipline and teamwork.
11-50 employees
Funding
Current Stage
Early StageCompany data provided by crunchbase