Software Engineer Sr. Stf - Level 5

The Integrated System Evaluation team is seeking a Senior C++ / Rust Developer to design, build, and optimize high-performance, low-latency systems that power our core products. This role is ideal for an experienced software engineer who thrives in performance-critical environments and enjoys owning architecture, reliability, and scalability end-to-end., Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or related discipline

• 12+ years of professional software engineering experience

• 5+ years of modern C++ experience OR 3+ years of production-grade Rust experience

• Experience with Linux-based systems

Desired Skills:

• Deep understanding of:

• Multithreading and concurrency models

• Memory management and performance optimization

• Networking (TCP/IP, gRPC, REST, WebSockets, etc)

• Data structures and algorithms

• Strong de-bugging and profiling skills

• Experience building large-scale or performance-critical systems

• Experience with distributed systems architecture

• Experience with CI/CD pipelines and automated testing frameworks

• Open-source contributions in C++ or Rust ecosystems

• GUI Frameworks: .Net, Qt 4/5/6

Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.

Clearance Level: Secret with Investigation or CV date within 5 years

What you'll do:

• Architect, design, and implement high-performance systems in C++ and/or Rust

• Optimize for performance, memory usage, and concurrency

• Develop scalable, resilient services in distributed environments

• Lead technical design discussions and code reviews

• Improve CI/CD pipelines, testing frameworks, and observability

• Collaborate cross-functionally with product, DevOps, and QA

• Mentor mid-level and junior engineers

• Drive best practices in systems design and reliability

• Participate in architectural decision-making and long-term roadmap planning

Must be a US Citizen. This position is located at a facility that requires special access.

EngineeringAeronautics

What's In It For You

Our 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

Learn more about Lockheed Martin's comprehensive benefits package here. aerosw, 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: 4x10 hour day, 3 days off per week

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.