Volunteer Embedded Systems Engineer Jobs in Merrimack, NH

Date Posted:

2026-06-22

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.

What You Will Do

• Modify, debug, test, add capability LynxOS and RHEL Linux embedded operating systems
• Work with application developers to add capability and resolve issues
• Primary liaison with OS and toolchain vendors (e.g., Lynx, PTC), overseeing defect tracking and resolution for vendor deliverables and collaborating closely on design efforts and new customizations
• Review software products for soundness of technical judgment and adequacy
• Interact with senior software personnel through both written and verbal communication.
• Produce documentation related to the design and release of software artifacts.
• Develop complete software solutions and influence the successful completion of supported programs and projects.
• Understand and utilizes Agile and DevSecOps software development methods, automation, and continuous integration.
• Follows organizational processes and procedures.
• 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.
• Collaborate with project managers and other professionals within Engineering.

Qualifications You Must Have

• Typically requires a bachelor’s degree in science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of experience. 
• Experience with LynxOS or other Real-Time Operating Systems (RTOS).
• Experience in embedded systems development and debugging.
• Experience with scripting languages such as Python or Bash for the development of automation tools and test frameworks.
• Experience with programming languages such as C, C++.

Qualifications We Prefer

• Active Secret security clearance.
• Experience with system initialization software development.
• Experience with POSIX APIs and other RTOS-specific APIs.
• Experience with networking protocols (TCP/IP, UDP, etc.) and security in embedded systems.
• Experience with hardware architectures such as ARM, PowerPC, or x86.
• Experience in performing software integration and testing for embedded or real-time systems.
• Experience developing automation pipelines using industry tools such as Jenkins, GitLab, Bamboo, or Travis
• Experience with device driver development and hardware-software integration.
• Experience with real-time scheduling algorithms and system optimization.
• Experience with data structures and algorithms, systems software design, operating systems, architectures, software development life cycle and processes.
• Prior experience within Patriot software is highly desirable.

Learn More & Apply Now!

This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm  

This position is in Tewksbury, Massachusetts. Living in Massachusetts means you’ll have easy access to the ocean and locations of historical significance. You can enjoy varied outdoor activities ranging from hiking and camping to cross-country skiing and snowmobiling. Massachusetts is recognized as one of the best states to call “home.”

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:

Onsite: 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 86,800 USD - 165,200 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.

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