Principal Software C/C++ Engineer

RTX; Concord (NH); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Relocation eligible

Job summary

RTX is seeking Senior Software Engineers to join our development team in Tewksbury, Massachusetts. All teams develop software in a variety of languages including C++, C, and several others. Candidates can expect to work on many if not all the phases of the software development life cycle.

This role will be 100% on-site in Tewksbury, Massachusetts. You will be responsible for providing practical solutions to difficult technical software problems across multiple programs and platforms.

Qualifications

• Degree in Science, Technology, Engineering or Mathematics (STEM) and 8+ years of relevant experience.
• Experience with C++, C and/or Java.
• Ability to obtain Interim Secret clearance and U.S. citizenship.

Responsibilities

• Assist and participate in the requirements, design, development and testing of real-time embedded software, application software, and tools.
• Design, code, test, integrate and document software solutions.
• Participate in internal review of software components and systems.
• Collaborate with project managers and other professionals within Engineering.
• Follow established development practices and processes to maintain configuration management.

Skills

C++

C

Java

Education

STEM degree

Tools

GIT

Jira

Jenkins

Perl

Bash

Kornshell

Job description

Date Posted:

2026-06-18

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.

We are seeking Senior Software Engineers to join our development team in Tewksbury, Massachusetts. All teams develop software in a variety of languages including C++, C, and several others. Candidates can expect to work on many if not all the phases of the software development life cycle.

In this position, you will be responsible for providing practical solutions to difficult technical software problems. You can expect to support multiple programs and multiple platforms within a software product line. Software Engineering positions include working on a variety of different tasks including real-time software development, application software development, test and verification, data analysis, software tools development, and many others.

This role will be 100% on-site in Tewksbury, Massachusetts.

What You Will Do

• Assist and participate in the requirements, design, development and testing of real-time embedded software, application software, and tools, to include development of new work products or enhancement of existing applications and systems.


• Design, code, test, integrate and document software solutions.


• Participate in internal review of software components and systems.


• Collaborate with project managers and other professionals within Engineering.


• Follow established development practices and processes to maintain the configuration management of software products.

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++, C and/or Java.


• The ability to obtain and maintain an Interim Secret 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.

Qualifications We Prefer

• Knowledge of data structures and algorithms, systems software design, operating systems, architectures, software development life cycle and processes.


• Experience in software development, and with Windows and Linux Operating Systems, GIT, Jira, Jenkins, Perl, Bash, and Kornshell.


• Experience developing software in a team-based development environment, preferably Agile/SCRUM, DevOps and test automation.


• Strong problem-solving and communication skills, including ability to produce technical documentation, and the desire to learn new technologies and tools.


• Able to travel domestic and international.


• Demonstrated ability to work effectively with coworkers.


• Demonstrated ability to work with colleagues who represent multiple work and conflict resolution styles.

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.


• Relocation eligible.

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 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 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.