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3,002 systems developer jobs at 740 companies in Westminster, CA

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Space Systems Engineer
El Segundo, California, United States
$115k-$250k/yr OnsiteFull Time
BTAS
BTAS: Independent defense contractor delivering space systems solutions.
10+ YOESpace systems design, development, and program support; TS/SCI eligibility; 10+ years experience; advanced degree preferred.
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2w
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Lead Software Systems Engineer
Seal Beach, California, United States
$172k-$232k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOE5+ MgmtActive U.S. Top Secret/SCI clearance, Bachelor’s degree, 5+ years software development experience (Python, JavaScript, TypeScript), CI/CD and database experience, leadership and systems engineering for space/ground systems.
Python, JavaScript, TypeScript, Angular, JQuery, FastAPI, Postgres, SQL, NoSQL, Java, CI/CD
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1mo
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Staff Systems Engineer (C++/Python)
New York or Los Angeles County
$220k-$260k/yr RemoteFull Time
NBCUniversal
NBCUniversalNASDAQ: CMCSA: Produces and distributes entertainment content and theme park experiences.
5+ YOEBachelor's in CS/Engineering/Math, 5+ years industry experience, strong C++ systems development, familiarity with machine learning/computer vision, Git and Unix shell proficiency, experience deploying/testing on cloud and large geospatial datasets.
C++, Python, Git, Mercurial, CMake, Linux, macOS, bash, Unreal Engine
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2w
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Lead Software Systems Engineer
Seal Beach, California, United States
$172k-$232k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
5+ YOEActive U.S. Top Secret/SCI required, Bachelor\u0002s degree or equivalent, 5+ years software development experience for space/ground systems, Python/JavaScript/TypeScript experience, CI/CD and database experience.
Python, JavaScript, Angular, JQuery, TypeScript, Postgres, SQL, NoSQL, Java, FastAPI, CI/CD
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1w
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Senior Photonic Systems Engineer
Los Angeles, California, United States
$110k-$280k/yr OnsiteFull Time
K2 Space
K2 Space: Develops high-power satellite platforms for heavy-lift launch vehicles.
5+ YOEDesign, develop, qualify, and deliver photonic systems for high-volume satellite optical payloads; 5+ years optical systems experience; bachelor’s in relevant technical field; mentoring and vendor management experience.
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Senior Systems Engineer
Irvine, California, United States
$110k-$183k/yr OnsiteFull Time
Fortive
FortiveNYSE: FTV: Industrial technology conglomerate providing critical instrumentation, software, and safety solutions.
8+ YOEBachelor's degree in engineering or equivalent, minimum 8 years engineering experience in product/systems development, working knowledge of FDA/ISO/QSR, system architecture, requirements management, verification/validation, and travel up to 20%.
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Senior Systems Engineer
Irvine, California, United States
OnsiteFull Time
Fortive
FortiveNYSE: FTV: Manufactures professional instrumentation, industrial tools, and specialized software.
8+ YOEBachelor's in engineering or equivalent, minimum 8 years product/systems development experience, knowledge of FDA/ISO/QSR and design controls, system-level architecture, requirements, V&V, risk and change management, ability to travel up to 20%.
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3w
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Systems Engineer – Carbon Management
Los Angeles, California, United States
$84k-$130k/yr OnsiteFull Time
University of California, Los Angeles
University of California, Los Angeles: A public research university providing higher education and research.
5+ YOEMinimum 5 years post-degree experience, strong technical writing and quantitative analysis, systems thinking, familiarity with TEA/LCA/process design/systems modeling; Master's required, PhD preferred.
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1d
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Systems Engineer
El Segundo, California, United States
$135k-$175k/yr OnsiteFull Time
Space Kinetic
Space Kinetic: Developing propellant-free systems for deploying payloads in space.
5+ YOE5+ years spacecraft or aerospace systems engineering experience, bachelor\u0002s degree in engineering or related field, systems lifecycle experience, requirements and MBSE knowledge, strong technical communication.
Cameo Systems Modeler, SysML, Jama, DOORS, Polarion, Python, MATLAB
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Systems Engineer, Senior
El Segundo, California, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
8+ YOERequires 8+ years systems engineering for DoD space ground systems, 5+ years integrating missions, TS/SCI clearance, Bachelor's in Engineering/Math/Physics/CS, Python and MBSE experience, ICD/API development, and Microsoft Office proficiency.
Python, Model-Based Systems Engineering (MBSE), Digital Engineering, Microsoft Teams, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Confluence, Jira
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13h
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Systems Engineer
Irvine, California, United States
$120k-$160k/yr OnsiteFull Time
DZYNE Technologies
DZYNE Technologies: Developer and manufacturer of autonomous airborne defense systems.
Lead systems engineering for expendable UAS: translate mission needs into requirements, manage interfaces, plan and execute system validation, perform reliability and risk analyses. Bachelors in engineering required; masters preferred.
DOORS, SysML, MBSE
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1mo
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Systems Engineer, Mid
El Segundo, California, United States
$62k-$141k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE5+ years systems engineering for DoD space ground systems, 3+ years mission integration, Python scripting, ICD/API development, MBSE/Digital Engineering, Microsoft Office suite, TS/SCI clearance, bachelor’s in engineering/math/physics/CS.
Python, Microsoft Teams, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Confluence, Jira
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AI Systems Engineer
Santa Monica, California, United States
HybridFull Time, Part Time
M|R Walls
M|R Walls: Designs and builds 3D carved architectural wall products.
Experienced software/AI engineer with Python and API/database integration skills; build AI agents, automations, and workflows using tools like OpenAI, Claude, OpenClaw, Hermes, and Vercel; strong systems-thinking and communication.
Python, APIs, databases, OpenAI, OpenAI APIs, Claude, Claude Code, Codex, MCP servers, OpenClaw, Hermes, Hermes Agent, Vercel, Midjourney, FAL, Flux, Airtable, Make, n8n, GitHub
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1mo
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Systems Engineer / Principal Systems Engineer - Integration & Test
Woodland Hills, California, United States
$92k-$171k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
2+ YOESTEM degree with 2+ yrs (Systems) or 5+ yrs (Principal); active U.S. Secret clearance; experience in requirements, test case development, verification & validation; ability to work onsite in Woodland Hills, CA; travel ~10%.
IBM Rational DOORS, JIRA, ClearQuest, ClearCase, Cameo, Agile
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6d
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Systems Engineer/Principal Systems Engineer - External Interface
Redondo Beach, California, United States
$92k-$171k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOEActive SCI clearance required, experience developing and managing external interfaces and ICDs, familiarity with DOORS and model-based systems engineering, STEM degree, and 2+ years engineering experience (Level 2) or 5+ years (Level 3).
DOORS, SysML, UML, CORE
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2mo
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Systems Engineer
El Segundo, California, United States
$134k-$190k/yr OnsiteFull Time
Radiant
Radiant: Designs and manufactures portable, mass-produced nuclear microreactors.
2+ YOEBachelor’s degree in engineering; 2+ years in design/analysis or systems engineering; manufacturing experience; strong communication.
DOORS, Jama, Flow
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1mo
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Systems Engineer
El Segundo, California, United States
$190k-$220k/yr OnsiteFull Time
Space Systems Integration
Space Systems Integration: Provides systems engineering and technical advisory for aerospace missions.
9+ YOESenior systems engineer with extensive space systems integration experience, active Top Secret/SCI clearance (T5/SSBI) and polygraph required. Degree (BS/MS/PhD) plus 9–14+ years experience in DoD/agency space programs, acquisition, and team leadership.
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Staff Systems Engineer, Air Vehicle Systems, Active Clearance
Costa Mesa, California, United States
$191k-$253k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
12+ YOEB.S. in engineering field, 12+ years systems engineering experience on UAS/aircraft systems, experience with MBSE/SysML and developing system requirements, active U.S. Secret clearance required.
Model Based Systems Engineering (MBSE), SysML, DoDAF, UAFP, Cameo MagicDraw, Rhapsody, SparxEA, Teamwork Cloud, MIL-HDBK-516C, MIL-STD-882E, ARP-4761, ARP-4754A, DO-178C, DO-254, MIL-STD-881
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1mo
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Lead Systems Engineer (38883)
Yorba Linda, California, United States
$128k-$237k/yr OnsiteFull Time
L3Harris Technologies
L3Harris TechnologiesNYSE: LHX: Aerospace and defense providing mission-critical technology solutions.
9+ YOEDevelop and verify system-level requirements, manage traceability (DOORS), define interfaces and architecture, support integration and test, and develop test automation; eligible for US security clearance required.
DOORS, signal analyzer, signal generator, spectrum analyzer
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2mo
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Sr Systems Engineer, Process
Long Beach, California, United States
$149k-$182k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
5+ YOE5+ years of systems engineering; BS in Engineering; proven process development; ability to work with IT/DevOps; lifecycle experience.
MBSE, Scripting, DevOps tools
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