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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.

Job Title: Specialist, Systems Engineer

Job Code: 42383

Job Location: Greenville, TX

Job Schedule: 9/80 - Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off.

Job Description:

We are seeking a highly motivated Senior Specialist, Systems Engineering to support the design, development, integration, and delivery of advanced software solutions for mission-critical defense systems. The ideal candidate will have experience leading technical efforts across the full software development lifecycle, collaborating directly with customers, and developing secure, scalable solutions in cross-functional engineering environments.  This role requires a strong background in software architecture, systems integration, diagnostics, automation, and secure software development, along with the ability to work across multiple programming languages and platforms.

Essential Functions:

• Lead end-to-end software development efforts including architecture, design, implementation, testing, documentation, and delivery.
• Serve as a primary technical interface with customers, coordinating schedules, communicating progress, and aligning deliverables with evolving requirements.
• Design and develop scalable authentication and authorization solutions to enforce system access control policies.
• Lead small technical teams in the development of diagnostics and monitoring tools to improve system health visibility and accelerate root-cause analysis.
• Investigate customer requests, analyze requirements, and implement effective software solutions.
• Maintain and update interface definition documentation and other technical artifacts.
• Design and implement software libraries for integration between Java applications and native APIs on Windows and Linux systems.
• Develop and maintain unit tests for C++, Python, and Java-based applications.
• Support software modernization efforts, including containerization and reduction of technical debt in legacy codebases.
• Automate development and release processes using scripting and web automation tools.
• Contribute to multiple software programs through feature enhancements, bug fixes, security updates, and platform improvements.
• Create user manuals and technical documentation to support delivered capabilities.
• Work effectively in a fast-paced, dynamic environment with time-critical requirements.
• Excellent communication skills and ability to work effectively in a team environment.
• Current or recently held Top Secret/SCI DoD security clearance and be able to maintain required clearance. 
• Must be able to work occasional weekend or overtime hours, as required. 

Qualifications:

• Bachelor’s Degree in Electrical Engineering, Computer Engineering, Computer Science, Software Engineering, or related technical field and minimum 4 years of prior relevant experience.
• Graduate Degree in Electrical Engineering, Computer Engineering, Computer Science, Software Engineering, or related technical field and a minimum of 2 years of prior related experience.
• In lieu of a degree, a minimum 8 years of prior related experience.
• Demonstrated knowledge of ELINT receiver systems, signal analysis equipment and techniques.  
• Demonstrated experience with ELINT databases such as EPL, CED, EWIR, MIDB, etc. 
• Demonstrated professional software engineering experience in defense, aerospace, or other mission-critical environments.
• Demonstrated experience leading software development efforts and/or small technical teams.
• Demonstrated practical experience with:
  • C / C++
  • Python
  • Java
  • Bash
• Demonstrated experience with software development on Windows and Linux platforms.
• Demonstrated experience with unit testing frameworks and software verification practices.
• Demonstrated experience with technical documentation, interface definitions, and customer-facing engineering communication.
• Demonstrated familiarity with secure software practices and access control implementation.

Preferred Additional Skills:

• Rust
• Docker/Podman
• CMake
• Google Test
• JNI development
• Selenium automation
• Experience supporting ELINT, airborne mission systems, communications systems, or similar defense platforms.
• Experience containerizing development environments.
• Experience automating manual engineering or release processes.
• Demonstrated ability to deliver projects ahead of schedule.
• Prior recognition for software engineering excellence or technical achievement.
• Hardware troubleshooting and maintenance experience. 
• Experience with JIRA/Confluence/DOORS

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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