1,518 systems developer jobs at 442 companies in Littleton, CO
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Payload Systems Engineer
Golden or Boston or Tel Aviv
$140k-$160k/yrHybridFull Time
Tomorrow.io: Weather intelligence platform for operational resilience and decision-making.
4+ YOE4-7+ years developing, integrating, and testing complex engineered systems (satellite payloads preferred); systems architecture, requirements management, verification planning, MBSE familiarity, strong communication and risk-mitigation skills.
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Experience in systems integration, test planning/execution, ICD development, and hardware/software integration. Active Secret clearance and willingness to travel up to 25% required; bachelor's degree in engineering preferred.
DatadogNASDAQ: DDOG: Observability and security platform for cloud applications and infrastructure.
3+ YOE3-5 years in software engineering or advanced automation; experience with LLMs, AI-enabled workflows, and production integration; strong API integration (n8n, Zapier, Workato); familiarity with HR systems; independent in fast-paced environments; clear stakeholder communication.
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
15+ YOEBachelor's in related field, typically 15+ years' systems engineering experience. Advanced expertise in requirements management, system architecture, integration, verification/validation, and leading multidisciplinary development efforts.
EchoStarNasdaq: SATS: Global provider of satellite solutions and wireless communications services.
8+ YOEBA/BS or equivalent,8-12 years experience,proficiency with Python,SQL,Linux,Git,Google Suite,AWS and Databricks;strong diagnostic,process improvement,and leadership skills.
Python, SQL, Linux OS, Git (GitLab), Google Suite, AWS, Databricks, Magnite, Freewheel, D2, DAI Web Apps, xRef DB, SET
CesiumAstro: Develops phased array communication systems for satellites and aircraft.
5+ YOEBachelor's degree in engineering or related field,5+ years experience with space-based communication payloads,systems engineering,requirements development,verification,CONOPS,systems integration,and strong communication skills.
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
15+ YOE15+ years systems engineering for space or ground programs, Master's in Aerospace or Systems Engineering, TS/SCI clearance, experience leading technical teams and integrating space and ground systems, knowledge of OPIR, cloud, DevOps/DevSecOps, and related architectures.
Areté: Develops advanced sensing and signal processing solutions for national security.
0+ YOESystems Engineer with requirements decomposition, system integration, test planning, and security clearance eligibility; BS/BA or MS/MA; located in Niwot, CO.
Jama, IBM Rational DOORS, Magic Cyber Systems Engineer, Scripting (test automation)
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
8+ YOEBachelor's in systems engineering or STEM,8+ years systems engineering experience, Agile knowledge, cloud (AWS/Azure/GCP), scripting (Python/Bash), DevOps familiarity, strong communication and problem-solving.
AWS, Azure, Google Cloud, Python, Bash, Confluence
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
15+ YOE15+ years systems engineering for space/ground programs, Master’s in Aerospace or Systems Engineering, TS/SCI clearance required, DoD acquisition experience, leadership and integration expertise, familiarity with cloud/DevOps/DevSecOps.
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOERequires TS/SCI with Polygraph, bachelor’s degree or equivalent, 5+ years systems engineering experience, expertise in systems engineering lifecycle, Atlassian (Jira, Confluence, Zephyr), Linux, strong communication and problem-solving skills.
BS in engineering required, experience in systems engineering processes, requirements development/verification, detail-oriented, presentation and teamwork skills; eligible for Top Secret/SCI with polygraph.
United Launch Alliance: Aerospace providing space launch services for satellites.
2+ YOEBachelor's in STEM, minimum 2 years related experience, systems engineering and integration knowledge, requirements development and verification, strong communication and organization, proficient in Microsoft Word/Excel/PowerPoint.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Teamcenter, Python, MATLAB
Systems Engineer Senior - Core Systems Engineering
Broomfield or Boulder or Westminster
$97k-$165k/yrOnsiteFull Time
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
4+ YOEBS in engineering plus 4+ years experience (or equivalent), systems engineering experience, requirements development/verification, familiarity with Jama/Cameo/MBSE/SysML, and eligibility for Top Secret/SCI clearance.
Arcfield: Systems engineering and mission support for defense and space.
5+ YOEBachelor's+5 yrs (MS+3 or PhD+1) in relevant engineering field; extensive systems engineering experience for high-reliability space/aerospace; experience across development lifecycle; experience with DOORS or Jama.
Warrenton or State College or Augusta or Centennial
$150k-$200k/yrOnsiteFull Time
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
10+ YOETop Secret clearance, 10+ years relevant experience, systems integration, documenting O&M/SOPs, designing interfaces and ontologies, automation using bash/python, familiarity with Java, Elastic, Docker, and software development/integration.
DPG Solutions: Automates IT infrastructure and DevSecOps for defense and government.
5+ YOEBachelor's in a related technical field; 5+ years systems engineering experience; US citizenship; Top Secret / SCI clearance; experience in aerospace/defense; strong communication.
Swimlane: Provides an AI-powered security orchestration, automation, and response platform.
8+ YOE8+ years software engineering experience; 1–2 years applied AI building multi-agent systems; expertise in .NET, TypeScript or Python; experience with cloud AI services (AWS Bedrock) and LLM SDKs; security-first AI and production systems.
.NET, TypeScript, Python, AWS Bedrock, Claude AgentSDK, Model Context Protocol (MCP), Cursor, Claude Code, GitHub Copilot