Principal Product Designer Chegg, Inc.Principal Product DesignerDenver, ColoradoWe need someone who operates at the intersection of product strategy, design craft, and AI-first delivery: a person who can determine which problems are worth solving, turn that into a plan the team can build, and bring it to life through design, rapid prototyping, and real user testing. Use a variety of techniques (one-on-one user interviews, rapid prototypes built with AI coding tools, and whatever else works) to validate and invalidate a wide breadth of ideas quickly and cheaply.
Principal Data Scientist (TS/SCI with Polygraph Required) DeNOVO SolutionsPrincipal Data Scientist (TS/SCI with Polygraph Required)Aurora, ColoradoClearance: TS/SCI with CI Polygraph Support Emerging Mission Needs and Help Shape DeNOVO’s Data Science Capability DeNOVO Solutions is seeking a Senior Data Scientist to help develop, refine, and strengthen our data science and mission-focused technical capabilities. The ideal candidate will be comfortable working across research, development, architecture, deployment, and stakeholder engagement while helping shape practical AI/ML solutions for emerging mission needs.
Principal Flight Software Engineer I CesiumAstroPrincipal Flight Software Engineer IWestminster, CO$142,000–$189,500 / yearPlease Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. The ideal candidate will have development experience at nearly every level of the software stack, including microcontrollers, low-level drivers, board support packages (BSP), and user interfaces with an emphasis on applications and data management.
Principal Electrical Engineer I - Flatsat Lead CesiumAstroPrincipal Electrical Engineer I - Flatsat LeadWestminster, CO$150,980–$182,400 / yearPlease Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. The FlatSat Lead will be responsible for technical direction, configuration control, infrastructure development, and cross-functional coordination to ensure the FlatSat enables rapid development, risk reduction, and mission success.
Principal Instructor - ArcGIS Enterprise EsriPrincipal Instructor - ArcGIS EnterpriseDenver, ColoradoDevelop and deliver training programs through various formats and methods including in-person, virtual and hybrid offerings, to enhance users' proficiency in ArcGIS software both domestically and internationally. The work you do will enable customers to grow their ArcGIS user skills, productivity, and confidence in addition to ensuring sustainable GIS workflows and operations.
Principal Software Engineer - Pay Group Engineering GustoPrincipal Software Engineer - Pay Group EngineeringDenver, CO$215,000–$252,000 / yearPay Group (payroll and tax) teams are responsible for the product, ops, and service components Gusto uses to onboard customers, process payrolls, calculate taxes and deductions, pay and file with tax agencies, and maintain compliance on behalf of the customers. As a Gusto Software Engineer at this level, you'll be guiding projects end-to-end by influencing initial feature specs, understanding how to take existing systems closer to desired end states, executing on projects, and maintaining code that powers core experiences.
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.
Senior Principal Consultant, Transactional Due Diligence SLR ConsultingSenior Principal Consultant, Transactional Due DiligenceDenver, COactive clients and expertise in client management, internal staff management, and the management of multiple project efforts and project teams; including coordination with staff resources, clients, subcontractors, and regulatory agencies. In the Americas, the Strategic Advisory Team is comprised of over 250 professionals across the Finance, Energy, Mining, and Corporate Sustainability practices, and is now looking for a Senior Principal Consultant to help manage and grow the Finance Advisory - Transactional Due Diligence practice.