Software Engineer Sr (level 3)

Lockheed Martin
Marietta, GA

Description: WHO WE ARE
The Skunk Works (Lockheed Martin Advanced Development Programs) is looking for world-class talent in Software Engineering to be a part of a team that will carry on our 80-year tradition-making history in advanced aircraft development. The vehicle management software team writes software for a wide range of aircraft subsystems that make an airplane fly. We are a highly innovative, multi-site, fast paced team developing modular and reusable software to support both our current platforms and the aircraft of the future.

WHATS IN IT FOR YOU
3-day weekend every weekend! 4-10 Mon-Thursday option + Flexible Schedules

This team is working new development software where our team members get to work hands on from the lab to the aircraft in all stages of development, including design, code, integration, and lab and field test. We work on a wide range of technologies and give our team members the opportunity to drive their career towards their area of interest. You will work with a high performing and passionate team who is involved within the company as well as outside the organization. This position offers meaningful and exciting technical work spanning both software development and supporting integration and test for a multi-site team. You will be joining a very open and inquisitive team filled with diverse perspectives and a common mission. You will be able to use this opportunity to learn from some of our most talented and senior engineers to grow into a subject matter expert to support both our current platforms and our platforms of the future.

YOUR IMPACT
You will be able to take your passion for software and avionics and your experience as an embedded software engineer and use it to help develop software for a wide range of aircraft systems supporting both rapid prototyping efforts and deliverable software.

The responsibilities for this role will include:
- full software lifecycle development spanning across many avionics services, ground station development and mission system software technologies.
- supporting ground station development for manned and unmanned systems
- development of simulations to support software development
- interfacing with key software and systems engineers to define requirements for rapid prototypes
- participating in integration and test events
- supporting planning and scheduling for key integration and milestone events

You will have the ability for growth and exploration while learning from some of the brightest professionals in our industry. This position offers a motivated engineer the opportunity to have a high impact on a fast paced program as they grow their own skillset.

Travel up to 10% may be required.
Basic Qualifications:
Bachelor's degree or above from an accredited college in a relevant field of study; or equivalent with minimum 3 years experience
Experience with C and/or C++
Experience with Linux or RTOS (real time operating systems) and associated development toolchains
Experience with the software development process in a team environment (peer reviews, unit testing, configuration management, defect tracking)
***Must be a US Citizen. This position is located at a facility that requires special access and a Secret clearance updated within the last 5 years to be considered.***
Desired Skills:
Experience with developing software for avionics systems
Experience integrating hardware and software
Experience in scripting languages (e.g. python)
Experience with build environments and tools (make and CMake)
Experience using agile software development tools and methodologies (e.g. Git, JIRA, Jenkins, Confluence, etc.)
Experience with networking protocols (e.g. IP, UDP, RTP, etc.)
Experience with hardware protocols (e.g. ARINC-429, RS-485, I2C, SPI, etc.)
Experience working with safety/flight critical software development processes (e.g. MIL-STD-516C, MIL-HDBK-1797, AC-17-01, DO-178)
Experience with Modeling and Simulation (including familiarity with MATLAB)
Ability to build and maintain relationships and collaborative effectively with others
Strong decision making and judgment skills
Experience leading small technical teams
Experience mentoring and training junior engineers
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, 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: AERONAUTICS COMPANY
Relocation Available: Possible
Career Area: Software Engineering
Type: Full-Time
Shift: First
Posted 2026-02-06

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