Principal Cyber Security Engineer ManTech International CorpPrincipal Cyber Security EngineerDenver, CO$128,800–$214,500 / yearThere are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. Knowledge of network devices (routers and switches), TCP/UDP traffic, firewall technologies, IDS technologies, proxy technologies, and antivirus, spam and spyware solutions.
Senior Flight Software Engineer II CesiumAstroSenior Flight Software Engineer IIWestminster, CO$133,000–$161,000 / 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 be an experienced spacecraft software engineer, motivated to develop every aspect of space mission software from Linux-based satellite operating systems to low-level embedded products.
Senior Embedded Software Engineer I - Spacecraft CesiumAstroSenior Embedded Software Engineer I - SpacecraftWestminster, CO$120,000–$160,500 / 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 be an experienced spacecraft software engineer, motivated to develop every aspect of space mission software from Linux-based satellite operating systems to low-level embedded products.
Sr Software Engineer, Ground Software ProtingentSr Software Engineer, Ground SoftwareLouisville, CO$156,666–$215,436 / yearSuperior communication and team leadership abilities, with track record of effectively using collaborative tools (GitHub, GitLab, Bitbucket) and facilitating development ceremonies (daily standups, backlog grooming, sprint planning, task estimation, retrospectives). About Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation — from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies.
Electrical Engineer (Senior - Principal), Harness True AnomalyElectrical Engineer (Senior - Principal), HarnessDenver, CO$135,000–$275,000 / yearExcellent written and verbal communication skills, including experience shaping cross-org alignment and maintaining composure and clarity under program pressure and influencing executive leadership on technical strategy, investment priorities, and organizational direction. Embed True Anomaly's values into cross-org delivery practices; serve as a visible role model for trust, accountability, and principled engineering judgment while setting the cultural tone for how teams collaborate and hold themselves accountable.
Sr Software Engineer, Ground Software Sierra Space CorporationSr Software Engineer, Ground SoftwareCentennial, CO$156,666–$215,436.75 / yearSuperior communication and team leadership abilities, with track record of effectively using collaborative tools (GitHub, GitLab, Bitbucket) and facilitating development ceremonies (daily standups, backlog grooming, sprint planning, task estimation, retrospectives). This advanced position requires deep expertise in multiple programming languages, an advanced understanding of software development principles, and the ability to design, architect, and implement complex software systems.
Principal Mechatronics Engineer Outrider TechnologiesPrincipal Mechatronics EngineerHenderson, CO$170,000–$200,000 / yearThe Principal Mechatronics Engineer will report to the Senior Manager of Hardware Engineering and will own the full lifecycle-design, prototyping, DFX, and production-of our next-generation robotic arm and end effectors for advanced manipulation. Apply design for manufacturability (DFM) principles throughout the design process, collaborating with vendors and contract manufacturers to ensure designs are producible, cost-effective, and scalable from prototype to production volumes.
Principal Platform Engineer — Kubernetes & Cloud Infrastructure OmbudPrincipal Platform Engineer — Kubernetes & Cloud InfrastructureDenver, COOmbud's platform runs production AI workloads for enterprise customers, and we're scaling toward a self-service motion where customers onboard, ingest content, and operate the product without manual implementation. You will set the technical direction for our cloud infrastructure, partner with engineering on production scaling decisions, and operate the platform with the discipline a SOC 2 / ISO 27001 customer base requires.
Principal Geotechnical Engineer AtlasPrincipal Geotechnical EngineerDenver, CO$150,000–$200,000 / yearAt Atlas, we're providing services that enable communities to flourish and thrive, and if you’re a Principal Geotechnical Engineer ready to provide technical leadership for geotechnical investigations, design, construction support, and client and team coordination across diverse public and private projects, and committed to doing meaningful work, then this is your moment. Lead geotechnical design, investigation, and analysis for buildings and infrastructure projects, including residential/commercial buildings, bridges, highways, railways, airports, pipelines, and levees/basins.
Sr Software Engineer, Product Owner - Ground Software ProtingentSr Software Engineer, Product Owner - Ground SoftwareLouisville, CO$156,666–$215,436 / yearExcellent communication and teamwork skills, and efficient with collaborative tools (GitHub, GitLab, Bitbucket) and development ceremonies (daily standup, backlog grooming, work planning, task estimation, retrospectives, etc.). About Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation — from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies.
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.
Software Engineer Level 3 or 4 (AHT) Northrop Grumman CorpSoftware Engineer Level 3 or 4 (AHT)Aurora, CO$114,000–$171,000 / yearExperience with the creation and implementation of visualization tools for space missions, including dynamic renderings of space vehicles, depiction of space vehicle missions, simulation of space vehicle sensor and mission outputs, and configuration displays of complex contextual and situational awareness information. The Software Engineer will participate in the full life cycle of software development, to include requirements development, modeling and design, application development, unit to CSCI testing, integration, formal system testing, release, installation, and maintenance.
Principal Geotechnical Tailings Engineer, North America Minerals & Metals AtkinsRealisPrincipal Geotechnical Tailings Engineer, North America Minerals & MetalsDenver, CO$165,000–$225,000 / yearNote to staffing and direct hire agencies: In the event a recruiter or agency who is not on our preferred supplier list submits a resume/candidate to anyone in the company, AtkinsRéalis family of companies, we explicitly reserve the right to recruit and hire the candidate(s) at our discretion and without any financial obligation to the recruiter or agency. Working closely with other senior engineers and supported by junior engineers and technicians, the Principal Engineer will be involved in all stages of the design of structures, from concept to design to construction on earthwork projects in the mining and water resources sectors.
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 Machine Learning Engineer (Gen AI) Workday IncPrincipal Machine Learning Engineer (Gen AI)Boulder, CO$200,600–$301,000 / yearWe know that flexibility can take shape in many ways, so rather than a number of required days in-office each week, we simply spend at least half (50%) of our time each quarter in the office or in the field with our customers, prospects, and partners (depending on role). Experience developing and deploying machine learning solutions using large-scale datasets, including specification design, data collection and labeling, model development, validation, deployment, and ongoing monitoring.
Principal Systems Engineer (FLITE + Missile Warning Ops Integration) ITSC Secure SolutionsPrincipal Systems Engineer (FLITE + Missile Warning Ops Integration)Aurora, COThis role ensures engineering activities across FORGE IPTs remain aligned, technically sound, and mission-focused-reducing integration risk and supporting long-term system sustainment and modernization. This role maintains cognizance over technical activities within FORGE Integrated Product Teams (IPTs) and ensures horizontal integration of best engineering practices across the FORGE enterprise.
Principal Automation Systems Engineer, NA Vantage Data Centers Management Co LLCPrincipal Automation Systems Engineer, NADenver, COThis role is expected to solve high-complexity automation challenges, provide direction for critical design decisions, mentor engineers and integration partners, and strengthen the quality, reliability, maintainability, and scalability of automation solutions used across both new builds and production environments. Developing and operating across North America, EMEA and Asia Pacific, Vantage has evolved data center design in innovative ways to deliver dramatic gains in reliability, efficiency and sustainability in flexible environments that can scale as quickly as the market demands.
Software Engineer - Level 2 or 3 Northrop Grumman CorpSoftware Engineer - Level 2 or 3Aurora, CO$91,800–$137,600 / yearDetermines computer user needs; analyzes system capabilities to resolve problems on program intent, output requirements, input data acquisition, programming techniques and controls; prepares operating instructions; designs and develops compilers and assemblers, utility programs, and operating systems. Conducts multidisciplinary research and collaborates with equipment designers and/or hardware engineers in the planning, design, development, and utilization of electronic data processing systems for product and commercial software.
Principal BESS Engineer Clearway Energy Group LLCPrincipal BESS EngineerDenver, CO$140,000–$195,000 / yearManager of BESS Engineering, the Principal Battery Energy Storage System (BESS) Engineer (or Battery Energy Storage System Manager) is responsible for preliminary engineering, fire safety engineering, technical specifications, system optimization, and procurement support for stand-alone, hybrid, and co-located BESS facilities. The Principal BESS Engineer / BESS Engineering Manager will work with project teams, external engineering teams, vendors, third parties, and consultants to drive our class-leading, multi-gigawatt, and globally competitive project pipeline to fruition.
Sr Software Engineer, Ground Software Sierra SpaceSr Software Engineer, Ground SoftwareLouisville, CO$156,666–$215,436.75 / yearSuperior communication and team leadership abilities, with track record of effectively using collaborative tools (GitHub, GitLab, Bitbucket) and facilitating development ceremonies (daily standups, backlog grooming, sprint planning, task estimation, retrospectives). This advanced position requires deep expertise in multiple programming languages, an advanced understanding of software development principles, and the ability to design, architect, and implement complex software systems.