Infrastructure Engineer - Linux

Two Sigma; New York (NY); On-site; USD 120,000 - 180,000; Full time

Job summary

Two Sigma is seeking a Linux systems engineer to optimize the platform and automate operations across a large-scale Linux environment. You will tackle kernel-level and application performance challenges while driving lifecycle management from hardware certification to image creation and deployment.

Ideal candidates have 1–5 years in Linux systems or reliability engineering, strong programming in Python or Go, and deep knowledge of Linux internals, networking, and distributed systems.

Qualifications

• Experience with Linux platform management and performance improvements.
• Experience scaling Linux environments across hundreds to thousands of servers.
• Programming experience in Python, Go or similar languages.
• Understanding of distributed systems, networking (TCP/IP, DNS, firewalls) and Linux internals.
• Knowledge of low-latency tuning techniques (busy polling, huge pages, RT kernels).
• Familiarity with kernel bypass networking, FPGA integration, or direct market access connectivity is a plus.
• Experience with containers and Kubernetes to aid kernel troubleshooting.

Responsibilities

• Improve and manage the Linux platform, focusing on performance improvements and reducing operational complexity.
• Develop automation to maintain our Linux environment.
• Solve sophisticated issues across the stack, from kernel-level problems to application performance.
• Lead the full lifecycle of Linux systems from hardware certification, image creation, installation, upgrades and lifecycle management.

Skills

Linux administration

Distributed systems

Networking fundamentals

Kernel tuning

Low-latency tuning

Containers & Kubernetes

Python

Go

Tools

C

Job description

You will take on the following responsibilities:

• Improve and manage the Linux platform, focusing on performance improvements and reducing operational complexity
• Develop automation to maintain our Linux environment
• Solve sophisticated issues across the stack, from kernel-level problems to application performance
• Lead the full lifecycle of Linux systems from certification of new hardware, image creation, installation, upgrades and overall lifecycle management

You should possess the following qualifications:

• Minimum 1 year of experience required; 1-5 years of experience preferred working in a Linux systems, software or reliability engineering capacity
• Experience running and configuring large-scale Linux environments (100s-1000s of servers)
• Proven programming experience in Python, Go or a similar programming language
• Understanding of system design principles, including distributed systems architecture and networking fundamentals including TCP/IP, DNS, and firewalls
• Deep knowledge of Linux internals including the scheduler, memory management, and network stack
• Experience with low-latency tuning techniques such as busy polling, huge pages, real-time kernels, and isolcpus
• Familiarity with kernel bypass networking, FPGA integration, or direct market access connectivity is highly desirable
• Experience with containers, Kubernetes, and/or C to help compile and troubleshoot kernel issues is a plus