Software Engineer Intern (Summer 2027)

Date Posted:

2026-09-28

Country: United States of America

Location: US-MA-MARLBOROUGH-MA2 ~ 1001 Boston Post Rd ~ BLDG 2

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

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. What You Will Do: The Software organization develops software applications, including integration and test on missiles, launchers, radars, naval systems, fire control and other complex systems. Our precision software and firmware integrate operating systems, device drivers, networking, and control software to bring together sensors, guidance, and flight control processing features to complete the mission. The Software org is made up of several Centers located across the country, responsible for all aspects of the software development lifecycle. Our 4000+ software engineers design, develop, and build innovative solutions for our customers. Join our fast-paced agile teams on the leading edge of technology. Our engineers design, develop, and build innovative solutions for the U.S. Government. Experience all aspects of a software development life cycle as a member of a fast-paced agile team on the leading edge of: Real-time systems design

Digital signal processing

Machine Learning and Autonomous Systems

Cyber Security

DevOps technologies and methods

The ability to obtain and maintain a U.S. security interim clearance prior to the start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. This position is on-site in Marlborough Massachusetts. Assist and participate in the requirements, design, development and testing of 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.

Work on problems with defined scope, schedule, and expectations.

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

What You Will Learn: Use new tools that will keep you state-of-the-art.

Stay updated with the latest advancements in software development and missile technology to drive innovation.

Qualifications You Must Have: Must be pursuing a Bachelor’s or Advanced degree in an applicable discipline and actively ++enrolled through completion of the internship / co-op session.

Must have a minimum of 60 hours of credit by the start of the internship / co-op session.

Experience with C, C++, or Java

Qualifications We Prefer: Knowledge of C/C++ programming, structured programming concepts.

Knowledge of object-oriented design and Unified Model Language.

Knowledge of statistical and numerical methods.

Interpersonal and communication skills, both verbal and written.

ABET is the preferred, although not required, accreditation standard.

Demonstrated ability to work effectively with colleagues and leaders in a team environment.

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

Relocation Eligible

Learn More & Apply Now! Please consider the following role type definition as you apply for this role. Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

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. The salary range for this role is 57,200 USD - 108,800 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 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.

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. Privacy Policy and Terms: Click on this link to read the Policy and Terms