Senior Full Stack Developer
LMI Consulting · Colorado Springs, CO, US
About this role
**Overview** LMI is seeking a **Senior Full Stack Engineer** to help architect, build, and extend **IronSled**, a Platform as a Service (PaaS) designed to host applications in **secure federal environments**. You’ll be a senior technical contributor on a small, cross-functional product team—owning complex capabilities from concept through production and helping establish the engineering practices, architecture, and technical foundation for long-term success. > This is not a backlog/ticket-implementation role. You’ll make consequential technical decisions, identify and resolve architectural risks, and mentor less-experienced engineers. **Team** IronSled sits within LMI’s Chief Technology Office. We operate more like a product-focused startup than a traditional government contracting program—moving quickly, running design spikes to resolve uncertainty, and prioritizing working outcomes while building for reliability, security, auditability, and trust. **Responsibilities** - Own complex full stack features end-to-end: **architecture & data design → deployment → production support** - Build across **Angular, TypeScript/Express, PostgreSQL**, and external platform integrations - Make technical decisions across **APIs, identity, permissions, security, reliability, and data architecture** - Partner with product leadership to turn ambiguous needs into practical solutions - Establish engineering standards; review designs and code; mentor engineers - Identify technical risks and improve platform architecture while balancing delivery speed with maintainability **Qualifications** - **7+ years** of professional software engineering experience, including ownership of production full stack applications - Strong experience with **TypeScript, Angular, Node.js or Python, PostgreSQL**, and **RESTful API design** - Demonstrated ability to independently lead complex features and make sound architectural decisions - Experience with **authentication, authorization, secure application design, testing, and production troubleshooting** - Ability to operate effectively with incomplete requirements and limited day-to-day direction - Experience mentoring engineers and improving team development practices - Active use of **AI-assisted development tools** in a disciplined engineering workflow - **U.S. citizenship** and ability to obtain an **active TS/SCI security clearance** **What Will Set You Apart** - Experience with **PaaS / internal developer platforms / developer portals / cloud-native products** - Experience with **Kubernetes, GitOps, CI/CD pipelines, containers, and event-driven integrations** - Experience integrating with **GitLab, Okta, Entra ID, OIDC, SAML, Trivy, Fleet**, or similar technologies - Experience developing software under **federal security and compliance** requirements - Experience across **cloud and on-premises** environments - Strong portfolio, open-source contributions, or other evidence of building products outside assigned work **Compensation** - Target salary range: **$111,000 – $211,000** - The range shown is typical and not a guarantee; compensation depends on factors such as location, internal equity, business considerations, contract requirements, and candidate qualifications (including security clearance). **Location** - **US-CO: Colorado Springs** **Security Clearance Note** - Applicants must meet eligibility requirements for a U.S. Government security clearance. - Only **U.S. citizens** are eligible for a security cleara
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