Full Stack Developer

Full Stack Developer Job Location s

US-Remote

3

LMI is seeking a Full Stack Software Engineer to join the team supporting

IronGate, a mission-ready data acquisition and transfer platform built for complex federal environments. It enables agencies to securely acquire commercial data and bring it into government networks through a self-service UI portal or direct-to-network push with full visibility, governance, and compliance at every step. You'll work across the stack-from Angular and Reactr-based UI workflows to Node/Express APIs and PostgreSQL data models-helping us deliver secure, scalable capabilities that support cyber threat detection, asset protection, and operational decision-making.

You'll collaborate closely with product owners, designers, Dev Sec Ops , and fellow engineers to iterate quickly on features, modernize existing components, and shape the future architecture as we incorporate technologies like Spark, Hudi, Elasticsearch, and Kong. This is a hands-on engineering role focused on building and operating production systems, not just prototypes. An active Secret security clearance is required.

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.

• Build and maintain full-stack features for Iron Gate using Angular (v21+), Type Script, Node.js, and Express, spanning UI workflows, API development, and data persistence.

• Design and develop new and existing application features in React
  , ensuring consistency and interoperability with Angular-based components where required.

• Develop and document RESTful APIswith OpenAPI/Swagger, supporting secure, well-structured services consumed by Iron Gate's front end and external integrations.

• Design and optimize data modelsin PostgreSQL (AWS RDS), with attention to indexing, query performance, and reliability in IL5/IL6-style environments.

• Work within a Kubernetes-based architecture, helping design, containerize, deploy, and operate backend services and cron-style job schedulers.

• Enhance frontend UXusing Angular,
  React
  , and PrimeNG, building intuitive, responsive, and reusable components tailored to mission users and their workflows.

• Support data integration flows using Airbyte and related extract/load pipelines to bring in asset, threat, and operational data from external sources.

• Collaborate on security and resilience, integrating services with AWS Guard Duty malware protection and following secure coding and Dev Sec Ops  best practices.

• Participate in code reviews and design sessions, shaping API contracts, data schemas, and modular architectures that are testable, maintainable, and scalable.

• Embrace AI-driven development practices, helping define guardrails, validation layers, and test coverage to keep AI-assisted code safe and production-ready.

• Support automated testing across the stack (unit, integration, and end-to-end) and contribute to CI/CD pipelines for reliable, repeatable deployments.

• Troubleshoot and optimize-diagnose bugs, address performance bottlenecks, and help ensure high availability and…