Senior Software Engineer (Embedded SW)

Date Posted: 2026-11-06 Country: United States of America Location: US-MA-MARLBOROUGH-MA3 ~ 1001 Boston Post Rd ~ BLDG 3 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 RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense. At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Collins Aerospace is seeking a qualified Sr Software Engineer to support the Identification Friend or Foe (IFF) programs onsite in Marlborough, MA This is an engineering position for an individual with educational and/or professional experience/interest in the development of solutions to radar systems. The work is highly technical, and the individual will work collaboratively in an agile environment on the software team. The individual will work with C++ code in an embedded multithreaded environment and support integration and test.  The successful candidate must be able to work on individual tasks, sometimes under limited supervision, or with a team to achieve operational targets and must have the ability to communicate and collaborate with parties within and outside of own job function. Eventually the candidate may be responsible for helping to provide guidance, coaching and training to other employees within their job area. If you're passionate about what you could accomplish here, we'd love to hear from you. What You Will Do Software growth and sustainment activities for legacy radar systems, to involve troubleshooting, maintenance, and patching Work on multiple tasks in support of software development Work collaboratively in an agile environment Work with C++ code in a multithreaded environment Improve code quality by performing code reviews and good software practice Support integration, verification, and in some cases field work Collaborate with subject matter experts and cross-functional teams for a unified solution  Qualifications You Must Have Experience in C++ software application development in Real Time Embedded Systems Understanding of basic software development principles – configuration control, collaborative development, and formal processes Experience in performing data analysis and problem solving (e.g. anomaly investigation) Ability to obtain and maintain a Secret U.S. government issued security clearance is required after the start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience  Qualifications We Prefer Experience with real-time multithreading, memory management and performance optimization, OS - VxWorks RTOS, Linux, Unix Experience in software collaboration environments and secure coding practices Experience in requirements traceability and requirements-based testing. Python Scripting Experience with development of solutions for radar systems and air traffic control Experience with Hardware and Software Integration, Validation & Verification Testing, and Qualification Testing.  DevSecOps and Continuous Improvement methodologies What We Offer Some of our competitive benefits package includes:  Medical, dental, and vision insurance Three weeks of vacation for newly hired employees Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option Tuition reimbursement program Student Loan Repayment Program Life insurance and disability coverage Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection Birth, adoption, parental leave benefits Health, fertility, and family planning Adoption Assistance          Autism Benefit Employee Assistance Plan, including up to 10 free counseling sessions Healthy You Incentives, wellness rewards program Doctor on Demand, virtual doctor visits Bright Horizons, child and elder care services Teladoc Medical Experts, second opinion program Eligible for relocation And more!  ​ Learn More & Apply Now!​ #MISENG Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers d