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.
Major Project Civil Engineer (Staff, Senior, or Principal) Xcel EnergyMajor Project Civil Engineer (Staff, Senior, or Principal)Denver, ColoradoAs a leading combination electricity and natural gas energy company, Xcel Energy offers a comprehensive portfolio of energy-related products and services to 3.4 million electricity and 1.9 million natural gas customers across eight Western and Midwestern states. Coordinate/leads critical projects or portions of projects (including phases such as research, design, equipment selection, procurement support, installation & commissioning), under the direction of a higher level engineer or supervisor.
NewPrincipal Engineer - Software EchoStarPrincipal Engineer - SoftwareEnglewood, Colorado$142,314–$181,500 / yearFull timeSkills, Experience and Requirements: MINIMUM REQUIREMENTS: Master’s degree or U.S. equivalent in Computer Science, Management Information Systems, or related field, plus 3 years of professional experience developing, testing, deploying, and maintaining enterprise applications. Our business spans satellite television service, streaming and on-demand programming, smart home installation services, 5G wireless consumer and commercial services, internet and other enterprise products.
Principal Engineer – Software EchoStarPrincipal Engineer – SoftwareEnglewood, ColoradoFull timeSkills, Experience and Requirements: Requires Bachelor’s degree (or foreign equivalent) in Computer Science, Engineering, or closely related field plus 5 years of experience in job offered or similar roles. Whether through research and development, technology innovation or solution engineering, our team members play a vital role in connecting consumers with the products and platforms of tomorrow.
Principal Engineer, Software Verint Systems, Inc.Principal Engineer, SoftwareDenver, COYou will operate at the intersection of hands-on engineering excellence and strategic technical leadership — contributing directly to complex features while shaping how the entire engineering organization builds, scales, and operates its software. + Cloud and Infrastructure: Deep hands-on experience with AWS or Azure including serverless compute, managed messaging (SQS/SNS/Service Bus), managed databases, and cost optimization.
Principal Bess Engineer Clearway Energy, Inc.Principal 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.
Principal Electrical Engineer Aspen Technical Staffing, IncPrincipal Electrical EngineerEnglewood, COLead and provide technical direction to engineers and designers executing electrical scopes on medium to large projects. In this role, you will lead electrical engineering efforts, oversee project execution, and ensure quality, compliance, and innovation across all deliverables.
Principal Mechanical Engineer (Solar Arrays) ProtingentPrincipal Mechanical Engineer (Solar Arrays)Westminster, CO$167,096–$229,757 / yearAbout 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 . Job Description: The Principal Mechanical Engineer role focuses on applying advanced technical principles, theories, and concepts to engineering projects, as well as contributing to the development of new principles and concepts.
Electrical Engineer (Principal), Power Systems True AnomalyElectrical Engineer (Principal), Power SystemsDenver, CO$200,000–$290,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Own the technical direction and architecture for spacecraft electrical power systems, including solar arrays, batteries, power distribution units, and protection circuitry across multiple programs.
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.
Electrical System Engineer Principal - Payloads - $10K Sign On Bonus BAE Systems PlcElectrical System Engineer Principal - Payloads - $10K Sign On BonusWestminster, COfor description visit the url https://jobs.baesystems.com/global/en/job/BAE1US123066BREXTERNAL/Electrical-System-Engineer-Principal---Payloads---$10K-Sign-On-Bonus .
Electrical Engineer (Staff Or Principal), Emi/Emc True AnomalyElectrical Engineer (Staff Or Principal), Emi/EmcDenver, CO$165,000–$275,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. As an Electrical Engineer (Staff or Principal), EMI/EMC at True Anomaly, you will serve as the company's technical authority for electromagnetic compatibility across our spacecraft, from individual avionics units through fully integrated vehicles.
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 Radio Systems Engineer LeoLabsPrincipal Radio Systems EngineerDenver, ColoradoThis is a hands-on technical leadership role for an experienced engineer who enjoys solving difficult problems, mentoring other engineers, working in dynamic teams, interfacing with external partners and customers, and building reliable hardware that performs in demanding environments. As orbital activity accelerates and threats grow more complex, LeoLabs is a trusted partner for Space Domain Awareness, Space Traffic Management, and Satellite Operations for top-tier space operators and allied defense organizations.
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 Spacecraft Simulation Software Engineer True AnomalyPrincipal Spacecraft Simulation Software EngineerDenver, CO$210,000–$325,000 / yearLead the design and implementation of production-quality multi-physics simulation software spanning spacecraft subsystems: 6DOF rigid body dynamics (gravity gradient, solar radiation pressure, atmospheric drag, magnetic torques, third-body effects), thermal modeling, attitude dynamics and control, propulsion (chemical/electric), power generation and storage, and high-fidelity sensor/actuator models (reaction wheels, CMGs, star trackers, gyros, magnetometers). True Anomaly is seeking a Principal Spacecraft Simulation Software Engineer to define the long-term technical vision and architecture for a simulation platform that spans some of the hardest problems in modern aerospace - from high-fidelity multi-physics modeling of spacecraft and constellations to simulation of complex, dynamic environments that don't yet have established playbooks.
Principal Engineer Procare SolutionsPrincipal EngineerDenver, ColoradoWe recognize the responsibility that comes with nurturing and educating children, which is why our child care management solutions are designed to automate business processes, help ensure safety and compliance, communicate with families and provide educational resources and training to help teachers and children thrive. For over 30 years, Procare Solutions has been dedicated to empowering early childhood educators by providing products and services that enable them to focus on the care, safety and education of children.
Principal Software Engineer (Hybrid, Denver Metro Preferred) FusionAuthPrincipal Software Engineer (Hybrid, Denver Metro Preferred)Denver, COFull timeWhen you join FusionAuth’s Denver team, you’ll enjoy a modern campus experience designed for productivity, wellness, and community: Newly upgraded amenity spaces including a sleek tenant lounge and café with booth seating and collaborative workspaces. Industry & Technology Leadership: Track where the identity industry is heading: passkeys/FIDO2, device authorization, DPoP, token binding, emerging OAuth and OIDC drafts, and the rapidly evolving intersection of AI and identity (agent authentication, scoped credential issuance, authorization for AI-driven workflows).
Principal Adaptive Optics Engineer Xcimer EnergyPrincipal Adaptive Optics EngineerDenver, CO$190,000–$220,000 / yearDemonstrated hands on experience working with laser beams, including propagation, beam quality, wavefront control, and interaction with real optical hardware. We support the establishment and maintenance of a workplace that fosters trust, equality, and teamwork, in which all employees recognize and appreciate the diversity of individual team members.
Principal Network Software Engineer - TS/SCI Rocket Lab USAPrincipal Network Software Engineer - TS/SCILittleton, CO$170,000–$230,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.