Senior Software Engineer, Systems

Onebrief
Chantilly, Loudoun County, VA

About us

Onebrief is a revolutionary platform for military staff workflows and operational planning. The software is designed to enable smarter, real-time decisions. With unparalleled collaboration features, AI-enhanced tools, and customizable workflows, Onebrief makes staffs superhuman. The expanding roster of customers includes COCOMs and Service Components worldwide.

Founded in 2019 by a group of experienced planners, today, Onebrief’s workforce of 120+ spans veterans from all forces and global organizations, and technologists from leading-edge software giants. Onebrief’s growth is exemplary, having raised $53M+ and counting from leading venture investors.

What you will achieve

As a Software Engineer, you'll work in close collaboration with our product, design, and tech operations teams. You’ll help Onebrief build AI and integrations within other DoD systems, creating the best military plans inside highly classified environments. You'll be working end to end on our platform, with a primary focus on server side development, designing and managing complex systems for our customers while working alongside our customers in SCIFs. Because of the onsite needs (80% of the time) and client facing nature, you have a military background to help understand our customers and develop with the users in mind. We expect 25% of travel to clients sites and SCIFs, so active security clearance is required at start..

Core Technologies: Node.js, Typescript, Postgres, Redis, Kubernetes, React

About You

The ideal candidate has worked on B2B SaaS applications and has experience in the defense tech ecosystem. Experience in the defense world will help us better understand the challenges our customers are facing, as well as the technology and networks our customers are utilizing.

Qualifications

  • You are a trained and experienced (3+ years) systems or backend engineer, but capable of full-stack development to collaborate with the wider engineering team.

  • You are a stickler for great developer experience and have frequently rolled up your sleeves and found solutions that made the whole team better.

  • You have prior military experience.

  • You are able to attain and maintain an active security clearance.

  • Most importantly, you are a true Onebriefer:

    • You are obsessed with creating value for real users

    • You are ambitious, scrappy, and a creative problem-solver

    • You learn quickly, work iteratively, and naturally seek collaboration

    • You approach your work with integrity, intellectual honesty, and a low ego

    • You communicate frankly, clearly, and succinctly

    • You thrive as a self-starter, embracing autonomy and ambiguity

    • You are a U.S. citizen

Posted 2026-02-01

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