Linux Engineer - Quant Trading

Entec Partners; Chicago (IL); On-site; USD 120,000 - 210,000; Full time

Job summary

Entec Partners in Chicago is seeking a Linux Engineer to design, implement, and maintain high-performance Linux environments powering trading systems and data-intensive research platforms.

You will optimize stability, security, and latency, collaborating with traders, researchers, and developers to meet demanding workloads.

This role requires 5+ years of experience in kernel tuning, networking, and automation, with hands-on expertise in HPC and distributed systems.

Qualifications

• 5+ years of hands-on Linux administration in high-performance environments.
• Deep knowledge of Linux kernel internals, tuning, and performance optimization.
• Experience with CentOS/RHEL, Ubuntu and their packaging systems.
• Proficiency in Python for automation and tooling development.
• Experience with low-latency networking and high-performance computing.

Responsibilities

• Design, implement, and maintain high-performance Linux environments optimized for low-latency trading apps.
• Tune kernel, network stack, and system configurations for nanosecond-level latency.
• Collaborate with traders, researchers, and developers to meet demanding workloads.
• Develop automation tooling in Python and leverage IaC tools such as Ansible and Terraform.
• Manage containerized workloads with Docker and Kubernetes and integrate FPGA/kernel bypass techniques.

Skills

Linux admin

Kernel tuning

Low-latency networking

Python automation

Ansible

Terraform

Docker/Kubernetes

FPGA/Kernel bypass

Real-time Linux

Distributed systems

Job description

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