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Working at Lockheed Martin

Software Engineer - Level 3

Fort Worth, Texas

Fort Worth, Texas

Job Responsibilities

Job ID: 722619BR Date posted: Apr. 08, 2026
Description:We are Lockheed Martin
Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unrivaled success in the aeronautics industry. Our workforce of more than 25,000 has pre‑eminent expertise in advanced aircraft design and production, modification and support, stealth technology and systems integration.

What You Will Be Doing
This position is for a Mission Assurance Software Engineer Senior supporting the F-35 Joint Strike Fighter (JSF) and Integrated Fighter Group (IFG) platforms. Opportunities to support other LM Aero platforms may become available as the candidate progresses in this role. The role requires excellent technical skills, proven ability to work in an agile environment, and a solid foundation in embedded software development.

The candidate contributes to the design, development, testing, and debugging of AntiTamper (AT) software services, ensuring strict compliance with Lockheed Martin coding standards and development processes. Building on solid experience, the engineer defines and evolves AT software architecture, designs robust interfaces, and drives the creation of detailed specifications that align with system requirements. They actively participate in internal and external design reviews (SRR, PDR, CDR, TRR, etc.), synthesize stakeholder feedback, and implements corrective actions.. In addition to mentoring junior team members, the engineer proactively evaluates emerging protection technologies and advances modern software design and analysis methodologies.

Daily tasks include but are not limited to the following:

- Develop, maintain, and execute unit tests and requirements‑driven test suites for mission‑critical software components.

- Participate in Agile ceremonies (scrum, sprint planning, retrospectives) and use Agile tools (Jira, Confluence, etc.) to track work and deliverables.

- Implement software features using C/C++ in a Linux environment; manage source code with GitLab (branching, merging, pull‑requests).

- Design and develop middleware components that enable communication between mission systems and hardware subsystems.

- Build, configure, and maintain CI/CD pipelines (GitLab CI, Jenkins, etc.) to automate builds, static analysis, testing, and deployment.

- Perform embedded software development, including memory‑mapped hardware access, bare‑metal coding, and real‑time operating system (RTOS) integration.

- Conduct root‑cause analysis of software anomalies: fault isolation, debugging, and after‑action reporting.

- Collaborate with system engineers, hardware engineers, and test teams to ensure software meets interface, performance, and security requirements.

- Produce and maintain technical documentation, test procedures, and operational guidance.

- The successful candidate will report to the Mission Assurance F-35 & IFG Manager, working under the Mission Assurance Senior Manager, and be expected to work closely with the other members of the Mission Assurance staff to ensure synergy across the Aero portfolio.

What’s In It For You:
From onsite to remote, we offer flexible work schedules to comprehensive benefits investing in your future and security, Learn more about Lockheed Martin’s comprehensive benefits package here.

Further Information About This Opportunity:
Candidate will also have the ability to travel to Lockheed Martin facilities, supplier sites, and customer locations. Must be a US Citizen. This position is located at a facility that requires special access.

This position is in Fort Worth, TX
Basic Qualifications:
Bachelor’s (or higher) degree in Computer Science, Software Engineering, Electrical Engineering, or a related technical discipline.

Minimum 3 + years of software‑development experience, including embedded or mission‑critical systems.

Secret Clearance with ability to obtain Special Access Program (SAP) Clearance.
Desired Skills:
Strong C/C++ programming background.

Proficiency with GNU build tools (Make, CMake, etc.).

Familiarity with AMD/Xilinx FPGA products and design suite (Vitis, Vivado).

Linux development experience, including kernel‑level or user‑space programming.

Embedded software expertise: Experience with memory‑mapped hardware access. Familiarity with FPGA design concepts (not a designer, but understands integration). Knowledge of real‑time operating systems (e.g., VxWorks, FreeRTOS) and bare‑metal development. Understanding of rate‑monotonic analysis for scheduling.

Experience with common crypto libraries (OpenSSL, WolfSSL, etc.) and best practices for secure coding.

Experience with requirements‑driven test development aligned with verification and validation processes.

Root‑cause analysis skills, including fault isolation, debugging, and after‑action reporting.

Experience using the GoogleTest framework for unit test development.

Proficiency with Agile tools such as Jira (or equivalents).

GitLab (or similar) source‑control and CI/CD pipeline management experience.

Reverse Engineering background.
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
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: 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.

If this sounds like a culture you connect with, you’re 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: AERONAUTICS COMPANY
Relocation Available: Yes
Career Area: Software Engineering
Type: Full-Time
Shift: First
Apply Now

About

At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges.

Pioneering Defense Technology: From aerospace to outer space to cyber space, you can innovate mission solutions alongside the best minds in the business.

United By Culture: Excellence, integrity, and collaboration define us. We accelerate change and embrace one another’s perspectives to win for our customers.

Real Impact, Real Growth: Grow your career and skills for life. Our wide array of opportunities and technology-driven learning programs enable your development and agility.

Your Health, Your Wealth, Your Life: Competitive pay, comprehensive benefits and flexible schedules designed so you thrive — at work and beyond.

Empowered to Be Your Best: Use your strengths to make a difference in the lives of one another, our customers, our communities, and our planet.

Here, the possibilities are endless because we offer:

  • Flexible Schedules, dependent on role
  • Levels: Student, Entry, Mid, Senior, Management
  • Locations: Nationwide & OCONUS Positions

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Qualifications

See what it takes to be a successful Lockheed Martin employee.

  • Collaborative

    There is no innovation without imagination. You bring new, different and exciting ideas to the table every day. You are committed to the success of your team.

  • Curious

    The ability to explore and drive new ideas. You think innovatively to come up with creative solutions to complex challenges.

  • Goal-oriented

    From planning and organizing to decision making, goal orientation produces impactful results. You set goals and strive to make things happen quickly and efficiently.

  • Proactive

    The ability to anticipate, plan and prepare for what lies ahead. You act rather than react to potential situations.

  • Problem Solver

    You work to tackle tough problems with complex solutions.

  • Strategic

    You observe, reflect and analyze processes to make more informed decisions.

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Quote

“Before I came to Lockheed Martin, I never thought I’d get these opportunities. The benefits available and the company’s value culture make it an incredibly supportive place to work, and I’m grateful to work somewhere that wants me to succeed. I hope to have a long career here making an impact, and I know I’ll be supported in doing that every step of the way.”

Ryan J., Enterprise Operations

Benefits

  • Healthcare

    Medical, Dental and Vision coverage is available for employees who opt-in.

  • 401(k)/Retirement Plans

    Our 401(k) plan features generous matching and company contributions.

  • Professional Development

    We support our employees through mentoring, internal & external educational programs, networking, skills enhancement and career-building programs.

  • Maternity and Paternity Leave

    Our generous parental leave policies support your journey into parenthood. When you return to work, our facilities offer mother's rooms to support your transition and work/life balance.

  • Paid Time Off

    We offer PTO, paid holidays and paid time off for jury duty and military obligations.

  • Flex-time

    Depending on the position, we offer flexible work schedules.

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