Principal Linux System Administrator SciTecPrincipal Linux System AdministratorAurora, CO$149,000–$184,000 / yearFor 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; and aircraft survivability missions. Perform patch and package management, including installation and maintenance of third-party software i.e. IDEs, Pypi, Docker registry, Monitor system performance, availability, and health; troubleshoot and resolve hardware and software issues, Support and maintain virtualized and workstation environments (e.g., VMware).
Principal Radar Systems Engineer SciTecPrincipal Radar Systems EngineerBoulder, CO$190,000–$235,000 / yearFor 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; and aircraft survivability missions. Decompose high‑level mission needs into subsystem requirements for hardware digitization, DSP algorithms, timing/synchronization, interface protocols, data models, and performance tolerances.
Principal DeltaV Automation Engineer Matrix TechnologiesPrincipal DeltaV Automation EngineerWestminster, CORemote$150,000–$180,000 / yearUnlike many traditional engineering roles, this position provides the opportunity to influence technical strategy, build a growing DeltaV practice, and develop the next generation of automation engineers while remaining actively involved in challenging client projects. While performing the duties of this job, the employee is occasionally required to stand; walk; sit; stoop, kneel, crouch; use hands to finger, handle, or feel objects, tools, or controls; reach with hands and arms; talk, and hear.
Principal Deltav Automation Engineer Matrix TechnologiesPrincipal Deltav Automation EngineerWestminster, CORemote$150,000–$180,000 / yearUnlike many traditional engineering roles, this position provides the opportunity to influence technical strategy, build a growing DeltaV practice, and develop the next generation of automation engineers while remaining actively involved in challenging client projects. While performing the duties of this job, the employee is occasionally required to stand; walk; sit; stoop, kneel, crouch; use hands to finger, handle, or feel objects, tools, or controls; reach with hands and arms; talk, and hear.
Laboratory Research Professional, Open Rank (Intermediate-Principal) University of ColoradoLaboratory Research Professional, Open Rank (Intermediate-Principal)Aurora, CO$52,030–$69,720 / yearProvide laboratory science expertise and leadership in study design, study oversight, data management, data analysis and manuscript preparation to assist all levels of investigators, researchers and clinicians on new research activities across a wide range of disciplines. In the Burger lab, we are interested in early vertebrate development of the axial and lateral plate mesoderm using zebrafish and mice as models, as well as associated structural birth defects, such as spina bifida, or defects affecting the heart/blood/bone/kidney.
Principal Analytics Engineer AngiPrincipal Analytics EngineerDenver, ColoradoRemoteCross-Functional Alignment: Coordinate across data platforms and product teams to map use cases, eliminate duplicate work, surface technical tradeoffs early, and drastically reduce cycle times from business question to trusted answer. You will play a dual role: empowering human analysts to spend less time debugging and more time driving strategy, while simultaneously hardening our data layer into a load-bearing, semantic infrastructure that AI tools can query accurately and safely.
Principal AI Engineer Strive HealthPrincipal AI EngineerDenver, CO$130,000–$196,000 / yearThis role will work as a forward-deployed AI engineer embedded with business and functional leaders to identify high-value problems, rapidly prototype and deploy practical AI solutions, and help teams adopt new ways of working enabled by enterprise AI platforms such as Claude Code, Glean, and related tools. Create reusable patterns, prompts, skills, templates, runbooks, and reference implementations so successful approaches can be adopted repeatedly; help business teams replace repetitive administrative effort with AI-assisted workflows while preserving the human judgment and relationships that matter most.
Principal Electrical Engineer CrusoePrincipal Electrical EngineerArvada, ColoradoWe're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved — people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services. Leadership & Mentorship: Provide expert mentorship to Staff and Senior Electrical Engineers, elevating the team's technical capabilities and fostering future leaders.
Substation Physical - Principal Engineer ANSSubstation Physical - Principal EngineerDenver, ColoradoKey Responsibilities: Strategic Leadership: The successful candidate will provide strong leadership, overseeing team management, staffing, planning, training, and resource development to ensure the successful execution of projects. Under the direction of experienced engineers and in collaboration with a team, you will gain exposure to the Renewables industry in Solar and Battery Energy Storage projects and Utility Interconnections.
Principal Software Engineer- Flight Systems FS StudioPrincipal Software Engineer- Flight SystemsDenver, ColoradoA fast-growing space-technology company is seeking a Principal Software Engineer to lead architecture and development of ground and flight software for lunar and deep-space missions. Develop flight software (cFS, embedded Linux), ground systems (Python, modern web frameworks), and cloud/embedded ML or autonomy systems.
Principal Design Engineer CrusoePrincipal Design EngineerDenver, ColoradoWe're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved — people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services. Liquid Cooling Transition: Lead systems-level engineering for the shift from air-cooled units to DLC/CDU architectures, managing integration impacts on power density and structural loads.
Principal AI/ML Engineer (Large Language Model) (TS/SCI) {S} ARKA Group, L.P.Principal AI/ML Engineer (Large Language Model) (TS/SCI) {S}Aurora, ColoradoExperience leading an interdisciplinary team of researchers and software developers and working with a program manager to define project scope and schedule to ensure we meet project milestones as defined by our customers. Being situated at the foot of the Rocky Mountains, Aurora provides opportunities to enjoy all the beautiful nature that Colorado has to offer, while also being a 20-minute drive from downtown Denver and 15-minutes to the Denver International Airport.
Principal Software Engineer (TS/SCI) {S} ARKA Group, L.P.Principal Software Engineer (TS/SCI) {S}Aurora, ColoradoBeyond direct design, the architect is expected to drive technical consensus through trade studies, proactively identify and mitigate technical risks, act as the primary technical interface to leadership, government customers, and sub-contractor CA/CE’s, and actively participate in the mentorship and growth of the distributed engineering team, ultimately joining our team to help shape the development and delivery of custom solutions and providing significant opportunities for personal skill development at ARKA. ARKA is seeking an accomplished Software Architect/Principal Software Engineer who is deeply customer mission-focused and passionate about providing strategic technical leadership in the software architecture and design of complex government systems, requiring proven experience leading programs involving 30+ developers in a distributed environment.
Principal AI Engineer Workday IncPrincipal AI EngineerBoulder, CO$217,000–$325,000 / year10+ years of professional software engineering experience with deep expertise in distributed systems, cloud computing, and API design, plus 2+ years of dedicated focus building production-grade LLM/agentic systems OR 7+ years of experience specifically within Machine Learning Engineering or AI application development, with 3+ years dedicated to shipping LLM-backed products. 6+ years of experience optimizing application performance (specifically tackling constraints like API latency and user interaction design), with 2+ years applied to modern LLM constraints (such as token management, cost optimization, and context-window efficiency).
Principal Consultant, Land Services - Denver, Colorado ERMPrincipal Consultant, Land Services - Denver, ColoradoDenver, Colorado$100,670–$152,062 / yearAs the largest global pure play sustainability consultancy, we partner with the world’s leading organizations, creating innovative solutions to sustainability challenges and unlocking commercial opportunities that meet the needs of today while preserving opportunity for future generations. Our diverse team of world-class experts supports clients across the breadth of their organizations to operationalize sustainability, underpinned by our deep technical expertise in addressing their environmental, health, safety, risk and social issues.
Education And Science Principal HDR, Inc.Education And Science PrincipalDenver, COWe are consistently ranked #1 in Science and have been recognized by the industry's Lab of the Year program 11 times for designing facilities in which world-class scientists can discover cures for insidious diseases, create new sources of clean energy, protect our resources and improve public health-enriching people's lives around the world. In collaboration with subject matter experts, and independently when appropriate, developing abstracts and presentations for industry conferences, seminars, workshops, and other similar events promoting program messages, research, project outcomes, lessons learned, trends, etc.
Principal Manufacturing Development Engineer Xcimer EnergyPrincipal Manufacturing Development EngineerDenver, COSupplier and Integrator Management: Work with procurement and external vendors to develop RFQs, define technical specifications, manage build and installation phases, and lead factory and site acceptance testing for robots, cobots, palletizers, and other actuated parts of the production line. Manufacturing Process Optimization: Evaluate and improve automated manufacturing workflows by analyzing cycle times, material flow, automation ROI, and work-in-process buffering to support consistent production output.
Principal Network Software Engineer - TS/SCI Rocket Lab USAPrincipal Network Software Engineer - TS/SCILittleton, Colorado$170,000–$220,000 / yearFull timeOur Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. This role will work with a team of engineers on Rocket Lab's flagship efforts to deliver on program milestones related to Space-to-Space Communications, Space-to-Ground Communications, Payload Software, and Data Security.
Principal Controls Engineer Atlas OTPrincipal Controls EngineerCentennial, ColoradoAs a Principal Controls Engineer at Atlas OT, you will set the technical direction for integrated automation and controls solutions across a wide range of industries, including energy, manufacturing, food and beverage, water/wastewater, oil and gas, renewables, and more. Bachelor’s degree in Engineering required; advanced credentials preferred (Master’s degree, ISA CAP, PE License – Control Systems, or recognized industry Fellow status).
Healthcare Engineering Principal HDR, Inc.Healthcare Engineering PrincipalDenver, COOur eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Work closely with local office leadership and Central Region leadership to ensure that the health engineering practice is meeting the business objectives for the firm from a local and regional perspective.