Site Reliability Engineer — NixOS, Remote & Flexible Hours

Leidos Inc; Boulder (CO); Hybrid; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Site Reliability Engineer in the United States to build, deploy, automate, and operate complex compute platforms. You will focus on reproducible, maintainable, and resilient systems with emphasis on Nix/NixOS, IaC, and scalable deployment pipelines.

You will work across Linux, networking, storage, and distributed systems, contributing to high-availability environments and learning adjacent areas within a dynamic team.

Qualifications

• Willingness to learn new stuff.
• Bachelor's degree in CS/CE or related field.
• Strong Linux system administration skills.
• Experience with Linux networking, storage, and file systems.
• Automation of system configuration and deployment.
• Experience with Nix and/or NixOS in production, lab, or significant personal environments.
• Python, Go, Bash, or similar scripting experience of 2+ years.
• Ability to debug complex systems methodically across multiple layers of the stack.

Responsibilities

• Own the reliability and operation of critical compute and data platforms.
• Design, deploy, and maintain Linux infrastructure, including NixOS-based systems.
• Build reproducible system configurations and deployment workflows using Nix and infrastructure-as-code.
• Develop reusable NixOS modules, packages, flakes, and system configurations.
• Improve platform resilience, fault tolerance, recoverability, and maintainability.
• Build monitoring, logging, alerting, and observability capabilities that help us understand system behavior before customers notice problems.
• Diagnose difficult failures across Linux, networking, storage, containers, and distributed systems.
• Automate repetitive operational tasks and eliminate configuration drift.
• Design and build security and maintainability components for deployed systems.
• Help define operational standards, deployment practices, upgrade strategies, and disaster-recovery procedures.
• Perform capacity planning and identify performance bottlenecks across compute, storage, and networking.
• Own solutions spanning CNO, analytics, security, infrastructure, and field deployments.
• Learn new skills and teach the rest of us what you know.

Skills

Linux administration

Networking experience

Automation scripting

Nix/NixOS experience

Python/Go/Bash scripting

Debugging complex systems

Willingness to learn

Education

Bachelor's degree in CS/CE or related field

Tools

NixOS

Terraform

Ansible

Job description

Leidos is seeking a Site Reliability Engineer in the United States to build, deploy, automate, and operate complex compute platforms. You will focus on reproducible, maintainable, and resilient systems with emphasis on Nix/NixOS, IaC, and scalable deployment pipelines.

You will work across Linux, networking, storage, and distributed systems, contributing to high-availability environments and learning adjacent areas within a dynamic team.