Software Systems Engineer jobs in Denver, CO

Littleton, Colorado

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Today

Redwire's Littleton, CO facility is Made for the Mission, delivering mission-ready imaging and sensing technologies that support the most demanding robotic and human-rated space missions. The team provides both off-the-shelf and custom-designed cameras-from simple imagers to advanced machine-vision systems-engineered to endure the extreme conditions of spaceflight. These camera systems meet stringent performance and reliability requirements, ensuring precise, consistent results across diverse mi

Full-time

USD 120,000.00 - 165,000.00 per year

Flight Software Systems Engineer

Greenwood Village, Colorado

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Today

York Space Systems was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next- generation space mission operations worldwide. Today, York is one of the most innovative aerospace companies, specializing in end-to-end customer solutions and the rapid production of spacecraft platforms. York's complete Space Segment Solution includes spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mi

Full-time

USD 100,000.00 per year

Advanced Software Systems Engineer

Boulder, Colorado

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Today

Basic Qualifications Education Requirements: Bachelor's degree in Systems Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree, plus a minimum of 3 years of relevant experience. Clearance Requirements: Department of Defense Secret security clearance is required at time of hire. Top Secret preferred. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requ

Full-time

USD 118,519.00 - 128,241.00 per year

Senior Principal Software Systems Engineer

Boulder, Colorado

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Today

Basic Qualifications Education Requirements: Requires a Bachelor's degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 10+ years of job-related experience, or a Master's degree plus 8 years of job-related experience. Agile experience preferred. Clearance Requirements: Department of Defense Secret security clearance is required at time of hire. Top Secret preferred. Applicants selected will be subject to a U.S. Government security in

Full-time

USD 183,381.00 - 193,409.00 per year

Software Systems Engineer II

Centennial, Colorado

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Today

Sierra Space Careers: At Sierra Space, we build the missions and systems that keep our world secure in the domain above Earth. Sierra Space team members share a spirit of innovation and collaboration and a belief that we can deliver on the boldest missions in space today. Together with our customers, we aim to safeguard our nation, sustain human presence in space, and secure the freedom of operations in low Earth orbit and beyond. Our success is measured by the trust of those who rely on what w

Full-time

USD 105,534.00 - 145,109.25 per year

Systems Engineer - Compute and Software Systems

Boulder, Colorado

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Today

SciTec, a wholly owned subsidiary of Firefly Aerospace, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness

Full-time

USD 156,000.00 - 193,000.00 per year

Staff Software Systems Engineer

Remote or Almont, Colorado

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Today

Description: Remote Our client seeks a Staff Software Systems Engineer to lead software requirements engineering, traceability, and software risk analysis for software-intensive products. The role will translate product, user, clinical, regulatory, cybersecurity, and operational needs into clear, feasible, and testable system and software requirements across mobile applications, web applications, backend services, APIs, SDKs, cloud services, and connected workflows. The engineer will drive cro

Contract

Sr. Software Systems Engineer (C#/.NET Developer)

Remote

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Today

Job ID: 2616245 Location: Remote Work, TX, US Date Posted: 2026-08-28 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: ORA_REMOTE Description SAIC is searching for a motivated, career and customer-oriented Sr. Software Engineer (C#/.NET Developer) who will work across EDI transaction processing, backend API develo

Full-time

USD 80,001.00 - 120,000.00 per year

Cryogenic Systems Software Engineer 3

Centennial, Colorado

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Today

Requisition ID: 2086 Standard Weekly Hours: 40.00 Location: ULA - Denver Relocation: Yes- Relocation may be available Travel Requirements: 10% At ULA, success comes through the efforts of a strong, united team. Thanks for your interest in United Launch Alliance, the world's most experienced and reliable space launch company! Successfully launching more than 155 consecutive missions with 100% mission success doesn't happen by accident. It's a testament to the commitment and dedication of ou

Full-time

USD 113,122.00 - 188,537.00 per year

Software Systems Testing Engineer

Littleton, Colorado

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24d ago

Job 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 solutio

Full-time

USD 76,500.00 - 134,895.00 per year

Software Systems Testing Engineer Sr

Littleton, Colorado

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24d ago

Full-time

USD 93,200.00 - 164,450.00 per year

Systems Engineer - Mission Software (Top Secret/SCI with CI Poly to start)

Littleton, Colorado

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Today

North Point Technology is looking to hire a Systems Engineer to support a cutting-edge geospatial intelligence data management program serving a major national security mission. This role requires an active Top Secret/SCI clearance with CI Polygraph. The program delivers advanced geospatial analysis and production capabilities, supporting thousands of intelligence analysts and decision-makers across dozens of locations worldwide. As part of an Agile SCRUM development team, the selected candidate

Full-time

Senior Spacecraft Systems Engineer - Software

Westminster, Colorado

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Today

At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals

Full-time

USD 133,000.00 - 161,000.00 per year

Software Engineer - AI & Internal Systems

Denver, Colorado

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Today

SOFTWARE ENGINEER, INTERNAL SYSTEMS & AI About the Role Quindar is building The Grid: an AI-native system that connects how the entire company thinks, communicates, and executes. We're looking for an engineer to operate like a Forward Deployed Engineer - except your customer is Quindar. You'll embed across Product, Engineering, Sales, Marketing, Programs, and Operations to understand how work gets done and then use software, AI agents, integrations, and automation to make it dramatically bett

Full-time

USD 160,000.00 - 185,000.00 per year

Flight Software Engineer II, Space Systems

Broomfield, Colorado

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Today

Katalyst Description: Katalyst is an American technology company focused on dynamic space operations. We are building a fleet of dual-use multipurpose robotic space vehicles to create the future where maneuvering, upgrading, refueling, resupply and exploration are as routine as they are on Earth. Getting to space and overcoming the gravity well is only half the story. What you do there is the future. We are not building the trains. We are building the machines that lay down the tracks. By devel

Full-time

USD 115,000.00 - 155,000.00 per year

Sr. Software Engineer - Systems Insights

Remote

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Today

Join the company that's building the telemetry infrastructure for the AI era. At Cribl, we partner with IT and Security teams at many of the world's biggest enterprises, including half of the Fortune 100, to bridge the gap between AI ambition and infrastructure reality. As the AI Platform for Telemetry, we give customers the choice, control, and flexibility to manage and analyze telemetry for both humans and agents, so they can build what's next. We're one of the fastest-growing private compani

Full-time

USD 165,000.00 - 200,000.00 per year

Power Systems Software Engineer

Remote

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20d ago

Title: Power Systems Software Engineer Location: (REMOTE)- IF local to Indianapolis, IN Hybrid preferred Duration: 6-12 months Ideal Start date: August, no later than Sept 8th Background or Drug Screen required: YES Project Details: Develop a software tool to streamline transmission outage coordination and power system analysis.Build a prototype connecting EMS models and pulling data from MISO for operational planning.Automate outage coordination studies and utility/security analysis across M

Easy Apply

Contract

$55 - $65

Systems Engineer

Remote

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20d ago

Systems Engineer Full-time Description: The Systems Engineer oversees and coordinates the work of technical teams on systems projects, ensuring the successful design, implementation, operation, and technical management of those projects. Taking a holistic approach to systems engineering, the Systems Engineer ensures that all aspects of a system project are considered and addressed. The Systems Engineer works closely with stakeholders to understand their needs and then develops and documents te

Easy Apply

Full-time

Depends on Experience

SOFTWARE SYSTEMS ENGINEER

Remote

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26d ago

Job SummaryWe are seeking an experienced Senior Systems Software Engineer to design, develop, implement, and maintain complex operating system software and enterprise-level software applications supporting mission-critical environments. The ideal candidate will provide technical leadership in systems programming, software architecture, operating system maintenance, and enterprise infrastructure integration while ensuring compliance with DoD architecture standards, cybersecurity requirements, and

Easy Apply

Contract

80 - 95

Systems Engineer

Boulder, Colorado

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Today

Minimum Clearance Required Secret Responsibilities I2X Technologies is a reputable technology services company to the Federal Government. Whether the focus is on space exploration, national security, cyber security, or cutting-edge engineering applications, I2X is ready to offer you the chance to make a real-world impact in your field and for your country. We provide long-term growth and development. Headquartered in Colorado, I2X is engaged in programs across the country and in more than 20

Full-time

USD 180,000.00 - 186,000.00 per year

Software Systems Engineer jobs in Denver, CO, USA