Backend Engineer Jobs in Colorado

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

• Expertise in backend development of web applications using Java, Spring Boot, and SQL; experience developing and maintaining scalable, reliable distributed services and APIs.
• Support and participate in all phases of the software development life cycle, including design, implementation, integration, testing, deployment, and sustainment.
• Develop, optimize, and troubleshoot backend services, database interactions, and system performance in a mission-critical environment.
• Self-motivated and able to work independently or in a team environment.
• Strong ability to collaborate with cross-functional teams, including front-end developers, systems engineers, testers, and mission stakeholders.
• Must be able to obtain a U.S. Security clearance to maintain this position.
• Excellent written and verbal communication skills.

• Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
• Possess or ability to obtain Secret clearance

• Experience with containerization (Docker, OCI‑compliant systems).
• Experience with Linux and Windows Server environments
• Experienced professional with proficient knowledge of web development
• Familiarity with GraphQL APIs or similar data‑querying patterns.
• DoD 8570 compliant; CompTIA Security+ is a plus.
• Background in space operations, SDA systems, or orbital M&S tools.

In compliance with pay transparency requirements, the salary range for this role in Colorado state is $97,000-$180,000. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

The application window for this position will close on 10/30/2026.

#LI-ZB2

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

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