Principal Java/C++ Software Engineer
Date Posted: 2026-01-20 Country: United States of America Location: US-MA-TEWKSBURY-TB1 ~ 50 Apple Hill Dr ~ ASSABET BLDG Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world. The Raytheon team is looking for a Principal Software Engineer to support the C5I (Command, Control, Communications, Computing, Cyber and Intelligence) product line in the Missile Defense Sensors (MDS) Software (SW) Department. The MDS SW mission is to provide world class Radar and Command and Control (C2) Software for our customer's wide array of Surveillance and Warning Systems. We align to the core Agile and DevSecOps principles of collaborative operation across the entire value stream, delivering high-frequency, high-quality deployments to our customers. We strive for technical excellence by drawing upon a workforce whose knowledge base covers the complete spectrum of modern computing languages and platforms. The candidate will be an integral part of the Software team. The candidate will be responsible for developing, maintaining, debugging and fixing problems within the SW application, as well as supporting integration efforts. The SW application is developed in an assortment of languages including C++, Java, JavaScript/Typescript, Lua, C# and Python. CI/CD pipelines are used to create Linux applications, microservices, REST APIs, Windows frontend applications, and HTML UIs to support the customer. The candidate shall also be able to provide technical solutions to a wide range of difficult problems, with solutions that are imaginative, thorough, and practicable, and consistent with organization objectives, work under only general direction and independently determine and develop approach to solutions. The job location for this opportunity is in Tewksbury, Massachusetts. Your qualifications could add tremendous value to our team. If you're passionate about what you could accomplish here, we'd love to hear from you. What You Will Do Innovate and Collaborate: Design, develop, and test software in an agile, collaborative environment that encourages creativity and teamwork to solve complex challenges. Tackle Complex Algorithms: Develop and implement sophisticated algorithms to solve challenging technical problems, optimizing performance and functionality in critical systems. Problem-Solve with Precision: Determine failure root cause, develop, design and implement solutions. Contribute to System Design: Provide critical input on software components of system design, including hardware/software trade-offs, integration of Commercial Off-the-Shelf (COTS) solutions, software reuse opportunities, and the synthesis of requirements from the system level down to individual software components. Collaborate Across Teams: Work closely with Systems Engineering, Integration and Test, and Platform teams to ensure seamless integration of components, alignment of requirements, and successful end-to-end system functionality. Elevate Standards: Implement recommendations to improve documentation quality and refine software development process standards, driving efficiency and excellence across the team. Lead and Guide: Offer technical guidance to the scrum team during planning and execution, ensuring alignment with project goals and fostering a culture of continuous improvement. Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience. Experience developing software in a team-based development environment using the Agile Scrum or Kanban framework. Experience as a software developer in C++ and/or Java code base, Git version control and workflow, code review process, unit testing, RedHat/UNIX/Linux OS. Experience with debugging tools for identifying and resolving software defects and optimizing code performance The ability to obtain and maintain a U.S. government issued Secret security clearance is required, as only U.S. citizens are eligible for a security clearance. Preferred Qualifications Strong collaboration and communication skills Experience with agile management tools (e.g., JIRA, Confluence) Domain knowledge in Command-and-Control operations, Link16 tactical communication, HMI usability development, Mission Defense Planning, Simulation Modeling and Analysis and Threat Evaluation/Weapon Assignment processing Experience with designing and implementing a large-scale modularized, reusable product base that supports multiple products Proven ability to interface with customers and lead technical solutions to complex user requirements Ability to work in a fast paced, dynamic environment with time-critical requirements Ability to understand command and control and/or radar technology in the areas of software design, integration and test Familiarity with Integrated Product Development System (IPDS) and CMMI-compliant Gate Reviews Proven experience in large, complex defense systems Experience with AI tools and applications to Software Engineering Experience with Model Based Systems Engineering (MBSE) and associated tools (i.e. Cameo) What We Offer Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Relocation Eligible. Learn More & Apply Now! Please consider the following role type definition as you apply for this role. 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. This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), 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. The salary range for this role is 107,500 USD - 204,500 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. Privacy Policy and Terms: Click on this link to read the Policy and Terms
