Full Stack Software Engineer - Clearance Required

Overview

LMI is seeking a Senior Full Stack Software Engineer to support a Department of War mission partner on a digital modernization effort. This role sustains and modernizes government-owned business applications built on the Microsoft technology stack, keeping mission-critical .NET applications running reliably while helping re-engineer and migrate them into a secure AWS GovCloud environment. The engineer will work across the full stack, from SQL Server data layers to React front ends, within a DevSecOps pipeline. This is a largely remote position; however, candidates must reside in the vicinity of San Diego, CA to support periodic onsite collaboration.

This position requires an active Secret clearance.

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 achieve mission success. Responsibilities: * Design, develop, test, and maintain full-stack web applications across the Microsoft .NET stack, including C# with .NET Framework and .NET Core, ASP.NET WebForms and MVC, and IIS. * Build and maintain responsive front-end interfaces using JavaScript, React, HTML, and CSS. * Develop and integrate data solutions on Microsoft SQL Server, including SSIS packages and SSRS reports, and connect applications to data warehouses and data marts. * Modernize legacy Microsoft applications to current frameworks, operating systems, and Agile practices. * Operate within a DevSecOps pipeline using