Principal Software Engineer

Position Information

Date Posted: 2026-01-06

Country: United States of America

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

Role Type: Onsite

Company: Collins Aerospace, an RTX company

Security Clearance: SC - Current

Salary Range: $107,500 USD - $204,500 USD

About the Role

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.

Responsibilities

• 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

Required Qualifications

• 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, Vx Works 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

Preferred Qualifications

• 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

Benefits

• 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
• Eligibility for relocation assistance
• 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
• Eligible for annual short-term and/or long-term incentive compensation programs

Additional Information

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.

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.

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.

Employee Referral Eligible:

About Collins Aerospace

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 communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you'll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow.

At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again.

Equal Opportunity

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.