Software Engineer - Senior

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Software Engineer - Senior

Full Time

King of Prussia PA 19487 USA

Posted 02/06/2026

Job Descriptionback to top

Description:At the dawn of a new space age, Lockheed Martin is a pioneer, partner, innovator and builder. Our amazing people are on a mission to make a difference in the world and every single day we use our skills and experiences to create, design and build solutions to some of the worlds hardest engineering problems. Our culture encourages employees to dream big, perform with excellence and create incredible products. We provide the resources, inspiration and focus. If you have the passion and courage to dream big, we want to build a better tomorrow with you.

We are seeking a motivated, resultsdriven Software Engineer to join the Stormbreaker program within LM Space.

Our team develops innovative enterprise, Cloud and application-based solutions for mission management, command and control, planning and scheduling along with world-class operations and sustainment capabilities of space- based programs in support of national security.

In this role you will be part of an agile development team responsible for designing, developing, and maintaining endtoend solutions built on .NET8+ and modern frontend frameworks (Angular or React)

As an experienced developer on the team, you will have a role in shaping the solutions the team develops.

This is a unique opportunity to contribute to innovative, forward-leaning programs while working alongside some of the brightest minds in the industry.

This is an EARLY-MID CAREER (level 3) ROLE where candidates typically require 3+ years of professional experience and a BS degree or above.

An active TS/SCI clearance is required for consideration.

Lockheed Martin employees play an active role in strengthening the quality of life where we live and work by volunteering more than 850,000 hours annually. Here are some of the benefits you can enjoy:

Medical
Dental
401k
Paid time off
Work/life balance
Career development
Mentorship opportunities
Rewards & recognition

We care about our employees and offer a generous benefits package: 401K, PTO, and work/life balance and more.
Basic Qualifications:
3+ years experience in software engineering or related discipline
Understanding of software development using C# and object-oriented programming principles
Demonstrated proficiency developing applications for .NET8+
Front end development experience using JavaScript/TypeScript, HTML, CSS, and a modern framework/library such as Angular or React
Ability to communicate effectively and work in a collaborative environment
Active TS/SCI security clearance is required for consideration
Desired Skills:
Demonstrated experience with Agile Scrum methodologies, including use of JIRA or similar workflow management tool
Experience with source control (Git) and CI/CD Pipelines
Experience writing automated integration and end-to-end tests
Experience with Docker & Kubernetes for container orchestration and deployment of .NET services
MVC architectural experience (ASP.NET MVC, Razor Pages, or similar) for building clean, testable web applications
Understanding of secure development best practices
Ability to take ownership of the full software lifecyclefrom conception through operational support.

#LMSpaceSoftwareEng
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: TS/SCI
Other Important Information You Should Know
Expression of Interest: By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.
Ability to Work Remotely: Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility.
Work Schedules: Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.
Schedule for this Position: 9x80 every other Friday off
Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration.
At Lockheed Martin, we use our passion for purposeful innovation to help keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work.


With our employees as our priority, we provide diverse career opportunities designed to propel, develop, and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.

If this sounds like a culture you connect with, youre invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs, and apply for roles that align with your qualifications.
Experience Level: Experienced Professional
Business Unit: SPACE
Relocation Available: Possible
Career Area: Software Engineering
Type: Full-Time
Shift: First

Job Requirementsback to top

3+ years experience in software engineering or related discipline
Understanding of software development using C# and object-oriented programming principles
Demonstrated proficiency developing applications for .NET8+
Front end development experience using JavaScript/TypeScript, HTML, CSS, and a modern framework/library such as Angular or React
Ability to communicate effectively and work in a collaborative environment
Active TS/SCI security clearance is required for consideration

Job Detailsback to top

Location King of Prussia, PA, 19487, United States

Categories Computer Software

Sec Clearances Top Secret/SCI

Pref Degree Bachelors

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Contact Informationback to top

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Job Code 709633BR

Software Engineer - Senior