JASSM Mission Planning Software Engineer, Senior / C++

Lockheed Martin in Orlando, Florida is seeking a Senior Mission Planning Software Engineer to contribute to cross‑platform missile performance modules. The role blends robust C++ development with C# interfaces used by mission planning applications, all performed onsite at the Orlando facility. You will join a dedicated team focused on delivering reliable software for complex defense systems.

Responsibilities

• Analyze requirements to shape software solutions.
• Design and implement components in C# and C++ within the Visual Studio environment.
• Create and maintain test cases, procedures, and drivers for software components.
• Integrate newly developed components with contractor‑provided modules.
• Develop and sustain UI and web‑based applications as needed.
• Leverage training in C/C++, bring prior GUI development experience, and work with Linux OS.
• Coordinate integration with sub‑contractor developed C++ components.
• Travel within CONUS may be required to support customers, users, and integration activities.

Requirements

• Experience with .NET and C# development.
• Strong background in C++ software development.
• Solid software architecture knowledge.
• Experience designing and implementing algorithms.
• Familiarity with GitLab CI/CD pipelines.
• Visual Studio experience with the .NET Framework.
• Interim Secret Clearance to start; U.S. citizenship is required.

Technologies

• C++, C#, .NET, .NET Framework
• Visual Studio, NuGet
• GitLab CI/CD
• Windows, Linux
• Ada, Docker, Kubernetes
• JavaScript, NodeJS, ASP.NET, MVC

Benefits

• Competitive pay
• Comprehensive benefits
• Flexible schedules
• Paid time off benefits

Why join us

As a Senior Mission Planning Software Engineer within LM Field Command, you will join a large network of software professionals applying cutting edge technologies across multiple development platforms. The work touches a broad range of domains, including flight command and control, air traffic systems, health care, and homeland defense, all within a matrixed engineering environment. The organization emphasizes career growth, knowledge sharing, and the use of advanced tech to achieve meaningful, impactful outcomes.

Security clearance statement

This position requires a government security clearance. Candidates must be U.S. citizens. Clearance level: Secret.

Further information about this opportunity

The role is based in Orlando, Florida. Learn more about the Orlando location as part of the application process.

Other important information you should know

• Expression of interest: Applying for this role indicates interest and may lead to consideration for other openings with similar skills and requirements.
• Onsite work: This is a full‑time onsite position at a Lockheed Martin facility.
• Work schedules: The organization supports various flexible schedules, including condensed work weeks alongside standard options.
• Schedule for this position: 4x10 hour days, 3 days off per week.
• Equal opportunity employer: Lockheed Martin hires qualified candidates without regard to legally protected characteristics.
• Application window: The posting remains open for 90 days; applying within 5–30 days of posting is encouraged for optimal consideration.