Senior Software Engineer

LMI; Arlington (VA); On-site; USD 112,000 - 190,000; Full time

Job summary

LMI is seeking a Senior Software Engineer to build user-facing applications supporting HQDA G-4. This role owns the design and delivery of capabilities from user need through production delivery as containerized apps deployed to a Kubernetes cluster.

Work across the stack, make architectural decisions, and build software directly with Army users and product teams, mentored by senior engineers. Active Secret clearance required.

Qualifications

• Bachelor’s degree in computer science, software engineering, or a related field, or equivalent practical experience.
• Five or more years of professional software engineering experience.
• Strong proficiency with JavaScript or TypeScript, React, and modern web application development.
• Strong proficiency in at least one backend language or runtime, such as Python, Go, or Node.js, with experience building APIs and data-intensive applications.
• Experience building containerized applications and deploying them to Kubernetes.
• Demonstrated ownership of a significant software capability from architecture through production deployment.
• Experience supporting a Department of War customer.
• Active Secret clearance.

Responsibilities

• Own the design and delivery of user-facing applications.
• Build responsive interfaces, backend services, APIs, and data integrations.
• Build and deploy containerized applications using Kubernetes and Helm.
• Work directly with Army users and product designers to understand workflows and refine capabilities.
• Establish sound practices for architecture, testing, code review, security, CI/CD, and production operations.
• Diagnose complex application and integration issues across the stack.
• Mentor engineers and contribute to technical decisions across the broader platform.

Skills

Five+ years exp

JS/TS & React

Backend languages

Containerized/Kubernetes

DoD experience

Secret clearance

Army logistics

Cloud & DevSecOps

AI tools

Education

Bachelor's degree

Tools

Helm

Army Vantage

Job description

Overview

LMI is seeking a Senior Software Engineer to build user-facing applications supporting HQDA G-4. This engineer will own application capabilities from user need through production delivery as containerized applications deployed to a Kubernetes cluster.

This is a hands-on role for an engineer who can work across the stack, make architectural decisions, and build software directly with Army users and product teams.

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.

Responsibilities

• Own the design and delivery of user-facing applications.

• Build responsive interfaces, backend services, APIs, and data integrations.

• Build and deploy containerized applications using Kubernetes and Helm.

• Work directly with Army users and product designers to understand workflows and refine capabilities.

• Establish sound practices for architecture, testing, code review, security, CI/CD, and production operations.

• Diagnose complex application and integration issues across the stack.

• Mentor engineers and contribute to technical decisions across the broader platform.

Qualifications

Required Qualifications

• Bachelor’s degree in computer science, software engineering, or a related field, or equivalent practical experience.

• Five or more years of professional software engineering experience.

• Strong proficiency with JavaScript or TypeScript, React, and modern web application development.

• Strong proficiency in at least one backend language or runtime, such as Python, Go, or Node.js, with experience building APIs and data-intensive applications.

• Experience building containerized applications and deploying them to Kubernetes.

• Demonstrated ownership of a significant software capability from architecture through production deployment.

• Experience supporting a Department of War customer.

• Active Secret clearance.

Desired Qualifications

• Experience supporting U.S. Army logistics.

• Experience with Helm.

• Experience with enterprise data platforms or Army Vantage.

• Familiarity with Army headquarters acquisition or program management processes.

• Experience with cloud platforms and DevSecOps.

• Demonstrated use of AI development tools as part of a professional software engineering workflow.

The target salary range for this position is $112,000-$190,000.

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.

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.

Job Locations

US-VA-Arlington