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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # SW Integration and Test Engineer - Principal SW Engineer - **Company:** RTX - **Location:** Tewksbury, MA, United States - **Experience:** Expert - **Salary:** $118,300.0 - $224,900.0 - **Contract:** Contract - **Skills:** Java (Programming Language), Agile Methodology, JIRA, C++ (Programming Language), Cyber Security, Continuous Delivery, Continuous Integration, Software Debugging, Linux, Hardware-In-The-Loop Simulation, Python (Programming Language), MATLAB, Scrum Methodology, Real-Time Operating Systems, Software Configuration Management, Software Engineering, Software Requirements Analysis, Systems Integration, Test Scripts, Git, SC Clearance - **Published:** November 4, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3494082781&tx=KP8585FFR&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role Active and transferable U.S. government issued security clearance is required prior to start date., Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date, * Typically requires a Bachelor's in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations. * Experience in software integration, testing, troubleshooting or administration in a Linux-based environment. * Experience with software development and debugging skills using languages such as C++, Matlab Python, Java or similar. * The ability to obtain and maintain an interim secret U.S. security clearance prior to the start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance., * Experience with advanced knowledge of radar systems, real-time software, or missile defense applications. * Experience working in field-deployed operational support roles, including direct interaction with customers and end-users. * Experience with Agile development methodologies and tools such as Jira. * Experience with system integration labs (SIL) or hardware-in-the-loop (HWIL) testing environments. * Experience with cybersecurity and information assurance requirements in a Linux setting. * Experience with leadership abilities, including mentoring junior engineers and leading cross-functional teams. * Experience leading software integration and testing efforts for real-time or mission-critical systems. * Experience with software configuration management tools such as Git and continuous integration/continuous deployment (CI/CD) pipelines. ## Description We are seeking a Software Integration and Test (SWIT) Engineer - Principal Software Engineer to join the Missile Defense Sensors (MDS) Software Department. The MDS Software mission is to provide world-class radar and Command and Control (C2) Software for our customers' wide array of surveillance and warning systems. SWIT Leads are responsible for coordination and integration of our software into a system, troubleshooting issues, designing new test cases, analyzing performance and designing new test cases. This is an onsite role in Woburn, MA or Tewksbury, MA depending on the assigned program. What You Will Do * Own, coordinate, and conduct the installation, integration, and configuration of new radar builds, software updates, and patches onto lab systems. * Own, coordinate, and conduct the merging and building of multiple software components for execution on the radar. * Drive the troubleshooting and resolution of highly complex software and system issues in a Linux environment, working collaboratively with multi-disciplinary teams. * Architect, develop, and execute detailed test plans and procedures to validate new software builds, ensuring they meet system requirements and operational performance standards. * Author analysis scripts to analyze system performance and implement improvements to the software baseline. * Mentor junior engineers and provide technical oversight on integration and testing activities. * Collaborate with cross-functional engineering teams, including systems, hardware, and cybersecurity specialists, to support the development and deployment of robust radar system solutions. * Identify, coordinate, and implement updates to support the continuous improvement of integration and testing processes, tools, and methodologies. * Prepare and present technical documentation, including test reports, analysis findings, and recommendations, to internal and external stakeholders. * Provide leadership in an Agile Scrum environment, supporting planning, estimation and technical execution., Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee's personal responsibility. This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA , an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.