Principal Software Engineer (ONSITE)

Date Posted:

2026-01-06

Country:

United States of America

Location:

MA804: Marlborough, MA Building 4 1001 Boston Post Road Building 4, Marlborough, MA, 01752 USA

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance:

SC - Current

Raytheon Company, Managed by Collins Aerospace

Collins Aerospace, an RTX company, is a leader in engineering and proposal teams to successfully execute programs and prepare responsive proposals aimed at making the world a safer place. Come support those who provide us with all the freedoms we enjoy. Our commitment to providing an environment that supports innovation, teamwork, and growth opportunities are primary reasons engineers come to work at RTX.

The Strategic Communication Software Engineering Department has an opportunity for a talented Principal Software Engineer to join our team. 

What You Will Do
   • Participate on collaborative, cross-disciplined integrated product teams, often employing agile software development techniques
   • Responsible for the full lifecycle of product development, from architecture and design, through integration, test, and field support
   • Work and learn the highest software engineering process maturity level as recognized by the Software Engineering Institute

Qualifications You Must Have
   • Experience in Software Engineering to include experience working various phases of the software development lifecycle 
   • Prior experience in leading a small engineering team
   • Experience with Software Development Using C++ or JAVA
   • Experience working in a collaborative team environment that requires communication with other engineering disciplines, Program, and external stakeholders
   • Experience with real-time operating systems (RTOS), embedded programming, processor/board architecture and design
   • Working knowledge of Linux, VxWorks or other Real time operating systems
   • Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience
   • Active and transferable SECRET clearance is required prior to start date
   • U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Qualifications We Prefer
   • Experience with Model Driven Development
   • Experience with software integration on custom hardware
   • Understanding of standard system engineering design artifacts such as Use Cases and SysML diagrams
   • Experience with Agile lifecycle process including Scrum, Continuous Integration, and Test-Driven Development Methodologies
   • Experience with DevOps, Jenkins and automated testing
   • Applied experience in Unified Modeling Language (UML) and Object-Oriented Analysis and Design (OOA/D)
   • Working experience with Microservice Architectures and Containerized Applications

What We Offer
    • 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 
    • Ovia 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
    • This position is eligible for relocation assistance
    • And more!  

Learn More & Apply Now!

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 depend on us for intelligent and secure