Linux Engineer - Quant Trading
entec partnersOak Park (IL)
About the role
As a Linux Engineer on the infrastructure team, you will design, implement, and maintain the high-performance Linux environments that power trading systems and research platform. You'll be responsible for ensuring the stability, security, and optimal performance of the Linux infrastructure while working closely with trading technologists, researchers, and developers to meet the exacting demands of low-latency trading and data-intensive research workloads.
Key Responsibilities:
Design, implement, and maintain high-performance Linux environments optimized for low latency trading applications Build and manage the kernel configurations, network stack tuning, and system optimizations required for nanosecond-level performance
Requirements:
- 5+ years of hands-on experience administering Linux systems in high-performance environments
- Deep understanding of Linux kernel internals, system tuning, and performance optimization
- Experience with modern Linux distributions (CentOS/RHEL, Ubuntu) and their packaging systems
- Proficiency in Python for automation and tooling development
- Knowledge of networking concepts, protocols, and tuning for low-latency applications
- Experience with configuration management and infrastructure-as-code tools (Ansible, Terraform, etc.)Understanding of modern containerization technologies (Docker, Kubernetes)
- Knowledge of FPGA, kernel bypass technologies, or specialized networking hardware
- Experience with high-performance computing environments or distributed systems
- Experience with real-time or specialized Linux kernel variants
Before you apply
Applying takes about a minute. These four things decide how fast it moves after that.
Your profile is current
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Two examples you can talk through
Not a portfolio — just two pieces of work where you can explain the decisions and what you'd change.
A number in mind
What you're on now and what would make you move. We negotiate better when we know both.
Your notice period
Employers plan around it, and it's the question that stalls offers most often.
Once you apply, someone reads it and calls you before anything reaches the employer — usually within two working days.
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