Principal Software Engineer (Onsite)

RTX (Raytheon); Tewksbury (MA); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Life Insurance

401(k) match

Flexible schedules

Employee Scholar Program

Parental leave

Paid time off

Holidays

Job summary

RTX is seeking a Software Engineer to join the Dual Band Radar Software Team in Tewksbury, MA. You will develop robust C++ software on Linux/UNIX in an Agile environment and collaborate to solve radar-related challenges.

The role requires a STEM degree with 8+ years of experience, strong C++/Linux skills, and the ability to obtain an Interim Secret security clearance. Onsite work in Tewksbury, MA is expected.

Qualifications

• Degree in STEM with 8+ years of relevant experience.
• Experience with C++ application code development and Linux/Unix.
• Real-time, multi-threaded software development experience.

Responsibilities

• Develop robust and scalable software in C++ on Linux/Unix.
• Design, implement, debug Radar software applications.
• Translate end-user requirements into technical solutions.

Skills

C++

Linux/Unix

Real-time multi-threaded

Education

STEM degree

Tools

DOORS

Job description

Date Posted: 2026-09-10

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: 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 Type: DoD Clearance: Secret

Security Clearance Status: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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.

Raytheon brings 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. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Raytheon is seeking a Software Engineer to join our Dual Band Radar Software Team located in Tewksbury, MA. We develop software in C++ utilizing agile software development methods.

What You Will Do

• Develop robust and scalable software in C++ running Linux or UNIX operating systems using Agile development methods.
• Design, implement, debug, and problem solve Radar Software Applications while providing feedback to other team members.
• Work in a team environment to understand end-user requirements and translate these into a pragmatic and effective technical solution.
• Dive into difficult problems and successfully deliver results on schedule.

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 unless prohibited by local laws/regulations.
• Experience with C++ application code development and Linux/Unix.
• Broad real-time, multi-threaded software development experience.
• The ability to obtain and maintain a U. S. Government issued Interim Secret security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer

• Active Secret security clearance.
• Radar software development experience.
• Strong Object-Oriented Design knowledge.
• Knowledge of software testing methodologies (functional, integration, regression, performance, etc.) and best practices.
• Experience with DOORS (Dynamic Object-Oriented Requirements System) or other requirements traceability tool.
• Strong analytical and problem-solving skills to effectively diagnose and address issues.

What We Offer

• Safety
• Trust
• Respect
• Accountability
• Collaboration
• Innovation
• 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
• holidays

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 applicant