Software Engineer I (Onsite)

Date Posted: 2026-09-09 Country: United States of America Location: US-MA-TEWKSBURY-TB3 ~ 50 Apple Hill Dr ~ CONCORD BLDG, Tewksbury Tb3 300 Concord 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 Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. What You Will Do: The Raytheon team is looking for a Software Engineer to support the Missile Defense Sensors (MDS) Software (SW) Department starting in January 2027. The MDS SW mission is to provide world class Radar and Command and Control (C2) Software for our customers’ 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. As a member of our team, you will design, develop, test, and release software products for one of our Radar or C2 programs. Some of the programs our department supports include the AN/TPY-2 Radar ( ), the Sea-Based X-Band Radar (SBX/XBR), and the Taiwan Surveillance Radar Program (SRP). The ideal candidate will have a strong foundation in software design and development, an eagerness to learn, the ability to work 100% onsite and collaboratively with a team, and an interest in complex, real-time, safety-critical systems. The ability to obtain and maintain a 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. Specific responsibilities include: Assist and participate in the requirements, design, development and testing of real-time application software and tools, to include development of new work products or enhancement of existing applications and systems. Participate in internal reviews of software components and systems. Work on problems with defined scope, schedule, and expectations. Follow established development practices and processes to maintain the configuration management of software products. Work on an agile team responsible for developing and delivering software for one of the MDS Department’s programs. What You Will Learn The workings of Missile Defense Systems and/or Command and Control (C2) Systems. How to develop and maintain large-scale, complex software solutions in an agile environment. Testing frameworks and best practices to enable high-quality software deliveries utilizing Continuous Integration/Continuous Delivery concepts. Qualifications You Must Have: Bachelor’s degree in Computer Science, Engineering, Mathematics, or a related (STEM) discipline. Experience developing software with C, C++, Java, or Ada. Qualifications We Value: Experience with CI/CD tools (Jenkins), configuration management tools (Git, Bitbucket, Artifactory), and data analysis tools (MATLAB, Python). Knowledge of data structures and algorithms, memory management, and multithreaded applications. Well-developed communication, technical writing, oral presentation, and interpersonal skills. Experience contributing to a team environment for the purpose of developing creative solutions to complex technical problems. Ability to work in a fast paced, dynamic environment with time-critical requirements. Ability to promote a culture of continuous learning, cross-team collaboration and training. What We Offer: Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: 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. 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. 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 57,200 USD - 108,800 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