Software Engineer Jobs in District of Columbia, United States

Helsing's Platform Engineering team architects, builds, and maintains a developer-focused platform that powers all Helsing US product and project teams. You will design and operate multi-account AWS cloud infrastructure, deploy shared services like GitLab and Artifactory, build self-service automation for isolated team environments, and embed security guardrails to meet CMMC Level 2 and ATO/NIST compliance.

Anduril Industries' Air Dominance & Strike Vehicle Software team builds the foundational software stack for autonomous systems like the Fury jet. This role involves designing real-time, map-based frontend interfaces to visualize sensor data and command physical assets.

i3 seeks a Software Engineer to support the Naval Research Laboratory's Tactical Electronic Warfare Division, which protects warfighters by advancing electronic warfare technologies. The role involves designing and maintaining C/C++ and Python software for radar data acquisition, embedded systems, and test automation across Windows and Linux platforms.

Build and create with JavaScript across the platform, delight users in React, power backend in Node, debug with monitoring tools, maintain technical bar via code reviews and interviews, collaborate on roadmap, 3+ years full-time experience, scalable production apps, Node/JS, React, MongoDB/NoSQL, clear communication, balance speed and quality, curiosity for fintech trends, extra: finance/fintech, data pipelines, payment rails, DevOps AWS, Cloudflare, CI/CD

Product Team at Goodshuffle Pro builds end-to-end event rental software that streamlines invoicing, inventory, and logistics for small businesses. As a Staff Software Engineer you will set standards for product discovery through infrastructure, design distributed, event‑driven systems, and lead AI‑enabled agentic workflows to boost engineering velocity.

REI Systems seeks a Software Engineer (.Net) to support its Mindful Modernization® approach, delivering reliable technology solutions that advance Federal clients' missions. The role involves migrating from .NET 4.8 to .NET 10 and transitioning from SQL Anywhere to SQL Server, requiring hands-on experience in .NET version upgrades and concurrent database-related code updates.

Helsing builds AI-enabled defense capabilities, including the Altra drone software platform and HX-2 autonomous drone. As a Software Engineer, Rust, you will design and build systems-level software powering autonomous capabilities on Altra, primarily in Rust, collaborating with ML engineers and working across the stack from networking to application services.

API Engineering at Fundrise builds the core investor APIs that power authentication, investing, and account management across web, iOS, and Android platforms. The Lead Software Engineer manages and mentors a team, sets technical direction, and delivers high‑quality, secure services in a regulated fintech environment.

Amtrak's Platform Engineering team builds secure, high‑performance software that powers the nation’s rail network. The Principal Software Engineer leads product design and development, defines technical requirements, and drives automated testing and continuous improvement across full‑stack applications.

SmartCop, part of Harris Computer's Frontline portfolio, delivers integrated public safety software for law enforcement and first responders. The Software Engineer builds reliable, scalable applications for SmartCop systems, collaborates across the software development lifecycle, and leverages AI‑assisted development tools to improve code quality and testing.

Infrastructure team at Meta builds large‑scale systems that power billions of connections worldwide. The Software Engineer designs, implements, and optimizes core infrastructure services, collaborates with cross‑functional partners, and mentors peers.

Principal Software Engineer on Recorded Future’s Engineering team, building and scaling the pipelines that power the Security Intelligence Graph. Designs, implements, and maintains scalable data pipelines that ingest, transform, and deliver structured threat intelligence, ensuring reliability, observability, and performance.

Software Test Engineer role at Barrow Wise Consulting focuses on ensuring quality for FEMA project. Candidate will design test plans, create manual and automated test cases, and execute functional, performance, and API tests.