Software Engineer Sr (level 3) jobs in United States
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Lockheed Martin · 2 months ago

Software Engineer Sr (level 3)

Lockheed Martin is looking for world-class talent in Software Engineering to be a part of a team that will carry on their 80-year tradition-making history in advanced aircraft development. The role involves developing software for a wide range of aircraft subsystems and participating in all stages of development, including design, code, integration, and test.

AerospaceCyber SecurityMachinery ManufacturingMilitaryNational SecurityRemote SensingSecurity
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Growth Opportunities
badNo H1BnoteSecurity Clearance RequirednoteU.S. Citizen Onlynote

Responsibilities

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

Qualification

C/C++Linux/RTOSAvionics software developmentAgile methodologiesNetworking protocolsHardware/software integrationModelingSimulationScripting languagesBuild environmentsSafety/flight critical processesMentoring junior engineersDecision makingCollaboration

Required

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

Preferred

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 collaborate effectively with others
Strong decision making and judgment skills
Experience leading small technical teams
Experience mentoring and training junior engineers

Benefits

Medical
Dental
Vision
Life Insurance
Short-Term Disability
Long-Term Disability
401(k) match
Flexible Spending Accounts
EAP
Education Assistance
Parental Leave
Paid time off
Holidays

Company

Lockheed Martin

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Lockheed Martin is a global security and aerospace company that specializes in advanced technology systems, products, and services. It is a sub-organization of Lockheed Martin.

Funding

Current Stage
Public Company
Total Funding
$6.06B
Key Investors
Air Force Research Laboratory
2025-12-05Post Ipo Debt· $3B
2025-08-28Post Ipo Debt· $3B
2023-11-13Grant· $33.7M

Leadership Team

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Jim Taiclet
Chairman, President & CEO
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Craig Martell
Chief Technology Officer
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Company data provided by crunchbase