← Back to Jobs
Employee
Technology
Software Engineer with Security Clearance
Lockheed MartinKing of Prussia, PA🇺🇸United StatesPosted 13 Jul 2026
Quick Overview
Work Type
On Site
Schedule
Employee
Level
Mid Senior
Job Description
Job Number 729284BR Description:Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We're creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We're erasing boundaries and forming partnerships across industries and around the world. We're advancing spacecraft and the workforce to fuel the next generation. And we're reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. The Staff Software Engineer is a senior individual contributor who leads the design, development, and delivery of complex software systems. You will mentor engineers, drive architectural decisions, and collaborate cross-functionally to ensure high-quality, scalable, and secure software/systems solutions that align with business objectives. - Technical Leadership: Define and champion software architecture, standards, and best practices across multiple projects and/or product lines. - Design & Development: Architect, design, and implement high-performance, maintainable, and testable code in alignment with product roadmaps. - Mentorship & Coaching: Provide technical guidance, code reviews, and career development support to engineers ranging from junior to senior levels. - Collaboration: Partner with product managers, UX designers, data scientists, and stakeholders to translate requirements into robust solutions. -Quality Assurance: Drive adoption of automated testing, CI/CD pipelines, and monitoring to ensure reliability and rapid feedback. - Performance Optimization: Identify bottlenecks, conduct profiling, and implement optimizations for latency, throughput, and cost efficiency. - Security & Compliance: Incorporate security best practices, perform threat modeling, and ensure compliance with relevant standards (e.g., ISO-27001, NIST). - Innovation: Research emerging technologies, evaluate their applicability, and introduce innovative approaches where beneficial. - Documentation: Produce clear technical documentation, design specifications, operational runbooks, etc.. Basic Qualifications: Compiled Languages: C/C++, Java or C# Interpreted Languages: Python or any other scripting languages (scripting, automation, test harnesses) Operating Systems and Shell: Windows, Linux, Powershell, Bash Version Control: Git: (branching, merging, rebasing, pull-request workflow) Build Systems: Basic knowledge of one or more of the following: CMake, Make, MSBuild, or Gradle; ability to create and maintain build scripts Debugging & Profiling: Use of IDE debuggers Code Reviews: Participate in peer reviews, give constructive feedback, and follow coding standards Documentation: Produce clear design docs, inline code comments, and maintain wikis or Confluence pages Configuration Management: Understand change-control processes (CRs, MRBs) and traceability requirements in regulated environments IDE Proficiency: Visual Studio, CLion, VSCode, or Eclipse Issue Tracking: JIRA or similar agile framework tooling Collaboration: Experience working in cross-functional teams (hardware, systems, test) and communicating status effectively. Agile Methodologies: Participation in sprint planning, daily stand-ups, retrospectives (Scrum/Kanban) Problem-Solving: Ability to break down complex requirements into iteratively deliverable value units Communication: Clear written and verbal updates to stakeholders; ability to produce concise design docs Adaptability: Quickly learn new languages, frameworks, or domain knowledge as project evolves Reliability & Accountability: Deliver high-quality code on schedule, understand impact of defects in safety-critical systems No clearance required to start but will need to obtain and maintain a Top Secret security clearance (Must be a US citizen) Desired Skills: Security Clearance Awareness Knowledge of handling classified or export-controlled information per internal policies (no details disclosed) Real-time & Embedded Systems Basics of RTOS concepts, scheduling, interrupt handling, and low-level hardware interaction Safety-Critical Standards Awareness of DO-178C, ISO 26262, or MIL-STD-498 compliance concepts (requirements traceability, verification) Model-Based Development Familiarity with tools such as MATLAB/Simulink, SysML or Model-Based Design flow (optional but a plus) Networking & Protocols Understanding of TCP/IP, UDP, and aerospace-specific protocols (e.g., ARINC 429, MIL-STD-1553) Object-Oriented Design: Ability to design, implement, and extend class hierarchies, apply SOLID principles, and write reusable components Data Structures & Algorithms: Comfortable with common structures (lists, maps, trees, graphs) and algorithmic thinking (search, sort, recursion) Test-Driven Development TDD: Write unit tests (Boost, JUnit, PyTest, NUnit) and understand code coverage metrics Continuous Integration: Familiarity with CI pipelines (Jenkins, Azure DevOps, GitLab CI) and automated build/test triggers Mentorship: Provide guidance to junior engineers and be receptive to feedback from senior engineers Active TS/SCI security clearance #LMSpaceSoftwareEng #SpaceSecurity Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration. Clearance Level: Top Secret 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: 9x80 every other Friday off 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: SPACE Relocation Available: Possible Career Area: Software Engineering Type: Full-Time Shift: First
Skills
MATLAB
Shell
Embedded Systems
Scrum
TCP/IP
TDD
Agile
Azure
Bash
C#
Confluence
C++
Git
GitLab CI
JUnit
Java
Jenkins
Jira
Kanban
PowerShell
Python
SAFe
pytest
Similar jobs
Software Engineer (Frontend Focus) with Security Clearance
Visionist · Fort Meade, United States
5 minutes ago$115k - $160k/yrJourneyman Software Engineer with Security Clearance
Amentum · Fredericksburg, United States
5 minutes ago$100k - $120k/yrSoftware Engineer 3 Tester with Security Clearance
CyberCore Technologies · Annapolis Junction, United States
5 minutes ago$120k - $188k/yrAssistant Application Developer with Security Clearance
IPTA · Jbsa Randolph, United States
5 minutes agoSoftware Engineer with Security Clearance
Base-2 Solutions, LLC · Bethesda, United States
25 minutes ago$10k/yrAppian Software Developer/Integrator with Security Clearance
Base-2 Solutions, LLC · Bethesda, United States
25 minutes ago$10k/yr