Senior Specialist, Systems Engineer

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: Senior Specialist, Systems Engineering Job Code: 44136 Job Location: Greenville, TX Schedule: 9/80 - Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off   Job Description: The Senior Specialist, Systems Engineer leads the design, integration, testing, and troubleshooting of complex software-intensive systems across the full engineering lifecycle. This role works with hardware, software, and external interfaces to define requirements, support API and subsystem integration, resolve issues, and ensure strong system performance in distributed environments. The ideal candidate brings strong systems engineering experience, hands-on software skills, and the ability to support modem integration, troubleshoot RS-429 interfaces, and help sustain mission-critical communications systems on ground and airborne platforms.   Essential Functions: Ability to obtain a DoD Security Clearance. This position includes an expectation of 10–15% shift, on-call, or weekend work. Support the design, integration, and sustainment of robust, scalable, and secure system solutions aligned with mission and customer requirements. Develop, integrate, and support software-based solutions in distributed system environments. Assist with system implementation activities, including upgrades, enhancements, configuration changes, and troubleshooting efforts. Translate customer and operational needs into system-level requirements and technical solutions. Support software design, development, integration, verification, and test activities across complex systems. Collaborate with software and cross-functional engineering teams to resolve technical issues and improve system performance. Perform system troubleshooting, root cause analysis, and issue resolution for software-intensive environments. Apply systems engineering processes, including requirements analysis, traceability, verification, and validation. Contribute to trade studies, technical analyses, and design evaluations to support architecture and implementation decisions. Develop and maintain subsystem, interface, and software specifications derived from system requirements. Review technical documentation, architecture products, and interface definitions for completeness, accuracy, and alignment with requirements. Develop and execute test procedures to verify system and software performance and ensure compliance with requirements. Monitor system and application performance to support reliability, availability, and maintainability objectives. Prepare and maintain system, software, interface, deployment, and test documentation. Generate technical reports related to system performance, risks, issues, and project status. Design, develop, and troubleshoot software solutions using Python, Java, and scripting languages to support automation, integration, testing, and operational needs. Interpret and troubleshooting RS-429 communication labels and interfaces in support of system integration, testing, and issue resolution. Apply knowledge of software development practices, API integration, and distributed systems to support development and integration efforts.

Bachelor’s Degree and minimum 6 years of prior