Back End Software Engineer

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.

Our team is laser-focused on creating cutting-edge RFID solutions for the DoD that bring passive and active RFID tech to life, solving tough integration challenges across global sites. If you’re ready to dive in, take ownership, and ship real value, keep reading.

The Opportunity
We’re looking for a Backend Software Engineer with strong C# / .NET, Entity Framework, and Relational Database skills to join our logistics app team. You'll work closely with product owners, designers, and fellow engineers to quickly iterate on features, improve performance, and build out a secure, scalable platform for real-world military and government users.

This role blends hands-on coding with architectural input, and you'll be exposed to everything from UI workflows to backend API logic to deployment automation.

What You'll Do

• Write clean and secure back-end services using C# / .NET, with a focus on REST APIs and modular design.
• Design and optimize data access layers using Entity Framework.
• Participate in code reviews and contribute to best practices and documentation.
• Collaborate across design, product, DevSecOps, and field teams to launch features quickly and securely.
• Participate in rapid prototyping cycles while maintaining production-grade coding standards.
• Write unit and integration tests to support automated testing/validation and code quality gates.
• Troubleshoot bugs, squash performance bottlenecks, and help build towards FedRAMP and IL5 deployment requirements.

What We’re Looking For:

• 3+ years of relevant software engineering experience.
• Proficiency in C# and modern .NET, with hands-on experience with Entity Framework and relational databases.
• Solid understanding of SQL, indexing, and query optimization.
• Familiarity with dependency injection, async/await, and LINQ.
• Experience building REST APIs and understanding the relationship between frontend and backend systems.
• Familiarity with secure software development practices and CI/CD pipelines (GitHub Actions, GitLab, etc).
• Comfortable working in Agile or Lean environments, with rapid delivery cycles and direct user feedback loops.
• US Citizenship with the ability to obtain and maintain a government security clearance. Active Secret or TS clearance preferred.

Bonus Points For:

• Experience with Docker, Kubernetes, or containerized deployment pipelines.
• Hands-on work with secure government environments (DoD, IL5+, FedRAMP).
• Familiarity with AWS GovCloud.
• Experience building logistics, supply chain, or asset tracking applications.
• Exposure to message brokers like Kafka or RabbitMQ.
• Certifications like Security+ and AWS Developer/Architect.
• Past experience at a startup or in rapid-growth teams.

Target salary range: $100,000 - 170,000. Final compensation will be determined by a variety of factors including but not limited to your skills, experience, education, and/or certifications.

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