System Engineer, Senior at Lockheed Martin
Littleton, CO
$89,300–$157,550from the description
Jul 22, 2026
Littleton, CO
Jul 24, 2026
What this job asks for AI summary
A senior-level systems engineering role on the Fleet Ballistic Missile program, focused on managing physical interfaces — mechanical fit, compatibility, and dynamic interoperability — across a complex system-of-systems. The work involves coordinating technical discussions among multiple engineering disciplines, translating system requirements into agreed design parameters, and maintaining interface control documentation. Suits engineers with CAD experience (Creo or similar) and a background spanning mechanical, electrical, or related disciplines, who hold or can obtain a Top Secret clearance.
Mid level · 3+ years · Denver-Aurora-Lakewood, CO · Secret clearance · Full-time
Advertised as Senior, but the requirements read as Mid.
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
Why we read it this way (7)
This is a Systems Engineering role in the aerospace/defense domain focused on physical interface management between mechanical and electrical subsystems — it does not map cleanly to any single SOC code. 15-1299 (Computer Occupations, All Other) is used as the closest fit; 15-1211 (Computer Systems Analysts) is a plausible runner-up given the systems integration and requirements management focus.
The posting titles the role 'Senior' but requires only 3+ years of experience (with internships potentially counting), which is more consistent with a Mid-level engineer on a standard career ladder — hence the seniority is assessed as Mid despite the advertised Senior title.
The hard clearance gate is Secret (with the ability to obtain Top Secret). The posting lists 'Active Top Secret clearance' under Desired Skills, making TS a preferred credential rather than a hard requirement at time of application. The minimum gate is Secret.
Creo is listed as a required skill under Basic Qualifications with 'and/or similar' language; AutoCAD is named explicitly as an alternative under Desired Skills. The requirement gates on 3D parametric CAD capability broadly, with Creo as the primary named tool.
DOORS, CAMEO, MBSE, and AutoCAD all appear under the 'Desired Skills' section and are therefore preferred rather than required.
The salary range quoted ($89,300–$157,550) applies to Colorado (among other named states); the role is on-site in Littleton, CO.
Requires a Secret clearance — the cleared population is a small fraction of this occupation, so the real candidate pool is materially smaller than the estimate below, which does not model clearance.
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