Full Stack Developer

LMI is looking for a Full Stack Developer to help build and extend IronSled, a PaaS focused on hosting applications in secure environments. You’ll be an initial member of a small, cross-functional team maintaining this product on contract. This position requires the ability to obtain a clearance;  U.S. citizenship is required. This is position includes quarterly travel for in person team planning and collaboration events.

This isn’t a maintain-the-backlog role. You’ll work across the stack, own features end-to-end, and help shape how this solution is built for long term success for our clients.

About This Team

IronSled sits within LMI’s Chief Technology Office. We’re a small, high-visibility team building an ETL for federal agencies. The culture is more startup than traditional government contractor; we move fast, solve problems in design spikes rather than scheduled reviews, and care more about outcomes than process. That said, we’re building for users who need reliability and trust, so craft and attention to detail matter.

You’ll work daily with our Product Manager, Engineering Lead, and Product Team. The roadmap for IronSled is still being formed, so you’ll be joining during a great time to help forge our path forward.

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.

What You’ll Do

• Build and ship full stack features across an Angular frontend and the IronSled TypeScript/Express API — from the database schema to the screen a user clicks.
• Design and implement how data moves through the platform — pipeline events, security scan results, container inventories, and project metadata — modeled in PostgreSQL and exposed through a clean API.
• Integrate and maintain connections to external systems as core execution flows: GitLab pipeline webhooks, Okta and Entra identity sync, OIDC/SAML authentication, Trivy security scanning, S3 artifact uploads, and Fleet GitOps repositories.
• Contribute to backend architecture decisions around data modeling, identity and permissions, security posture (vulnerability rollups, SBOM, FIPS 199 categorization), and how the platform handles sensitive federal data.
• Collaborate directly with the product manager in working sessions — shaping onboarding flows, dashboards, and UX decisions, not just implementing tickets handed to you.
• Ship incrementally and stay close to users. Get features in front of people, iterate on real feedback, and cut releases on a steady cadence rather than perfecting in isolation.

What We’re Looking For

• 3+ years of full stack development experience, or fewer years with demonstrable depth in ETL solutions; comfortable owning both frontend and backend
• Proficiency in Angular and TypeScript on the frontend
• Solid backend experience in Node.js and/or Python
• Experience using PostgreSQL to store, retrieve, and manage structured application data, with experience in database design, SQL development, and operational support
• Active use of AI-assisted development tools in your day-to-day coding workflow
• Experience designing and developing RESTful APIs and backend services that support scalable, maintainable integration across distributed application components
• Ability to move fast and iterate without heavy specs or detailed tickets
• This position requires the ability to obtain a clearance;  U.S. citizenship is required

What Will Set You Apart

• A portfolio of side projects, personal websites, open-source contributions, or other evidence of a builder’s disposition; we care more about what you’ve built than where you’ve worked
• Demonstrated fluency with AI coding tools and a workflow that treats them as force multipliers, not novelties
• Experience across AWS, Azure, GCP, and on-premises environments.
• Experience developing software in environments governed by federal security and compliance requirements, with attention to secure coding practices, access control, auditability, and deployment constraints

Target salary range: $100,000 - 175,000

The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

#LI-SH1

Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work.