Description

Leidos’ Security Enterprise Solutions (SES) operation is seeking a Senior Software Engineer (C++) in Tewksbury, MA to join our cross-functional engineering team using cutting edge technology to develop truly novel solutions that make travel and trade safer, healthier, and more efficient on a global level. 

As a Senior Software Engineer (C++) on our diverse and collaborative team, you will work alongside our expert Scientists and Engineers, contributing to cutting edge technology with global impact on security detection. This isn’t your run-of-the-mill software development – you’ll be honing your engineering skills with embedded products, real-time programming, and object oriented design, all with the support of a management team focused on your professional growth and advancement.

The Senior Software Engineer uses knowledge and experience with Object-Oriented C++ development to perform job functions. Individual will be responsible for developing applications for our distributed turn-key systems. Working under general supervision in a small team environment, your primary responsibility will be to modify, develop, and troubleshoot multi-tiered distributed applications and systems. The duties and responsibilities may change from time to time without notice and include but are not limited to the duties described below.
 

Primary responsibilities include:

• Design, build, and maintain efficient, reusable, and reliable C++ code using good OOP/OOAD techniques for our systems.
• Optimize, identify bottlenecks, bugs, and devise solutions to problems including: Maintain code quality, revision control and organization, Analyze customer issues and identify and implement solutions, Participate and contribute within a defined software development process.
• Occasional travel to customer sites may be required. Travel may be domestic and international.

Basic Qualifications:

• Requires BS degree and 8+ years of prior relevant experience or master’s with 6+ years of prior relevant experience. Additional years of experience will be considered in lieu of education.
• Must have the ability to obtain a Public Trust clearance (US citizenship required).
• Strong Understanding C++ and OOP/OOAD
• Strong understanding of data structures, algorithms, and software design solutions.
• Strong understanding of memory management, multicore processors, and distributed systems design.  

Preferred Skills:

• Linux Platform development
• Interfacing with hardware and real-time debugging.
• Good working knowledge of SQL
• Working knowledge of Cybersecurity
• Working knowledge of networking  solutions.
• Graphics Design, GUI development, DirectX, etc. (Highly Desirable)
• Excellent verbal, written and interpersonal communication skills
•  Advanced degree, preferred

Check out the links below to learn more about Security Enterprise Solutions (SES)
https://careers.leidos.com/pages/security-enterprise-solutions     
https://www.leidos.com/markets/aviation/security-detection  

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

December 4, 2025

Pay Range:

Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.