Senior Specialist, Software Engineer

L3Harris•Fountain, FL

About The Position

L3Harris is seeking a Full Stack Software Engineer to build and enhance mission-critical command-and-control applications supporting space domain missions. The role is part of a multidisciplinary team using Agile and DevSecOps practices to deliver new capabilities, modernize existing software, and solve complex technical problems in secure environments. The work emphasizes backend development and API design, with opportunities to contribute across the full stack and support mission outcomes. The position is based in Chantilly, Virginia; Colorado Springs, Colorado; Melbourne, Florida; or Rochester, New York. The schedule is 9/80: employees work 9 out of every 14 days, totaling 80 hours, and have every other Friday off.

Requirements

Bachelor’s degree and at least 6 years of relevant experience, or a graduate degree and 4 years of relevant experience; alternatively, 10 or more years of directly related experience in lieu of a degree.
Experience developing software in Java.
Experience building applications with the Spring Boot framework.
Experience with front-end development in React and TypeScript.
Experience designing or integrating RESTful web services.
Experience with unit testing and software quality practices.
Experience working with PostgreSQL or a similar relational database management system.
Experience working in Agile software development environments such as SAFe, Scrum, or Kanban.
Experience with container technologies such as Docker, Kubernetes, or OpenShift.
Active Top Secret clearance and ability to obtain and maintain SCI access.

Nice To Haves

Experience building or supporting microservices-based architectures.
Experience with cloud environments such as AWS or AWS GovCloud.
Experience with front-end development technologies such as React, Angular, TypeScript, CSS/SCSS, or HTML.
Experience supporting space, defense, or other mission-critical systems.
Experience mentoring early-career engineers.

Responsibilities

Design, develop, test, and maintain software capabilities for mission-focused command-and-control applications.
Build backend services and APIs using Java and Spring Boot, with opportunities to contribute across the full stack.
Support integration, upgrades, and modernization efforts for operational mission software.
Troubleshoot software issues, improve reliability, and help deliver a strong end-user experience.
Work closely with software, systems, and mission partners in an Agile development environment.
Contribute to modern DevSecOps practices, including automated testing, CI/CD workflows, and containerized deployments.