Infrastructure Engineer - Linux

Two Sigma; New York (NY); Hybrid; USD 165,000 - 250,000; Full time

Benefits offered by this job

Fully paid medical and dental insurance

401(k) match

Onsite gyms

Tuition reimbursement

Flexible in-office days

Job summary

Two Sigma is looking for a Linux Systems Engineer in New York to manage and improve their Linux platform. Your role will focus on performance enhancements and automation, ensuring efficient management of a large-scale environment.

Minimum qualifications include at least 1 year of experience in Linux systems, with skills in programming and system design. Benefits include medical and dental insurance, tuition reimbursement, and a flexible hybrid work policy.

Qualifications

• Minimum 1 year of experience required; 1-5 years preferred in Linux systems.
• Experience with large-scale Linux environments managing 100s-1000s of servers.
• Deep knowledge of Linux internals including scheduler, memory management.

Responsibilities

• Improve and manage the Linux platform focusing on performance improvements.
• Develop automation for maintaining the Linux environment.
• Lead the full lifecycle of Linux systems from certification of new hardware.

Skills

Linux systems

Python

Go

System design principles

Distributed systems architecture

Tools

Containers

Kubernetes

TCP/IP

Firewalls

Job description

Position Summary

Two Sigma is a leading quantitative investment management and trading firm. The company applies a scientific approach to investing, combining cutting‑edge technology, artificial intelligence, data science, and quantitative research with rigorous human inquiry to capitalize on market opportunities and deliver alpha for investors. Our team of engineers, quantitative researchers and data scientists looks beyond the traditional to test hypotheses and develop creative solutions to some of the world’s most complex economic problems. The Infrastructure Engineering team focuses on developing and supporting the core of Two Sigma's Linux environment. You'll work closely with collaborators across the company to ensure that our innovative research and trading software can run across multiple environments at substantial scale. You'll lead a variety of critical tasks, including modifications of upstream Debian images for bare metal/VMs/containers, compiling custom kernels, configuration management, server monitoring and telemetry, and much more. Your focus will be across the full stack – from hardware to the virtualization layer to the OS, automating lifecycle management of our enterprise Linux environment.

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

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

Benefits

• Core Benefits: Fully paid medical and dental insurance premiums for employees and dependents, competitive 401(k) match, employer‑paid life & disability insurance
• Perks: Onsite gyms with laundry service, wellness activities, casual dress, snacks, game rooms
• Learning: Tuition reimbursement, conference and training sponsorship
• Time Off: Generous vacation and unlimited sick days, competitive paid caregiver leaves
• Hybrid Work Policy: Flexible in‑office days with budget for home office setup

The base pay for this role will be between $165,000 and $250,000. This role may also be eligible for other forms of compensation and benefits, such as a discretionary bonus, health, dental and other wellness plans and 401(k) contributions. Discretionary bonus can be a significant portion of total compensation. Actual compensation for successful candidates will be carefully determined based on a number of factors, including their skills, qualifications and experience.

We are proud to be an equal opportunity workplace. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity/expression, age, status as a protected veteran, status as an individual with a disability, or any other applicable legally protected characteristics.

Two Sigma is committed to providing reasonable accommodations to qualified individuals in accordance with applicable federal, state, and local laws. If you believe you need an accommodation, please visit our website for additional information.