577 Results for

Principal Engineer Jobs in Littleton, CO

Jobs

Denver, CO

$144,000–$180,000 / year

Technical Leader, this role is responsible for developing and driving the cybersecurity testing strategy across the Software Quality Engineering organization while enabling the broader organization to consistently implement and execute a unified cybersecurity testing approach. A core focus of this role is embedding cybersecurity as a continuous, front-loaded component of the software development lifecycle to enable early identification and prevention of vulnerabilities and potential security risks, while maintaining compliance with medical device regulatory requirements.

5 days ago

Aurora, CO

$116–$120 / hour
Contractor

While an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations. This includes the collection of diagnostic data, accurately documenting problems in logging and discrepancy reporting tools, restoring system operation, development of workarounds, and other activities necessary for recovery of the system.

29 days ago

Denver, CO

$65,000–$80,000 / year

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3 days ago

Englewood, CO

$170,000–$180,000 / year

Own the end-to-end delivery of the AI & Intelligence pillar — including Conversational AI (Copilot Studio bots, Teams integrations), Agentic AI (Google ADK applications), and GenAI Innovation (rapid prototyping, emerging capability evaluation). • Define and enforce the architectural patterns used to build agentic AI applications across the pillar — including agent orchestration with Google ADK, tool and MCP server design, memory and context management, and multi-agent coordination.

30+ days ago

Denver, CO

$97,000–$156,600 / year

As 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. The successful candidate will work on modeling, analysis, and strategy development supporting the Company's Colorado Distribution System Plans (DSPs) and other long-term infrastructure plans at the intersection of generation, transmission, distribution and gas LDC planning.

19 days ago

Littleton, CO

p>Candidates for this position should have experience in one or more of the following areas:

• Performing engineering or applied physics research at a deep technical level • Performing R&D of novel prototype systems for defense-related applications • Experience transitioning from prototype technologies into fieldable systems • Design and development of systems with wireless connectivity and real-time embedded processing • Signal processing related to acoustic or optical real-time detection and classification • Implementation of machine learning and artificial intelligence on edge hardware systems.

Applied Research Associates, Inc. (ARA) is seeking an experienced Principal Engineer or Principal Scientist with a proven ability to lead applied research programs and successfully secure funding to support and grow those efforts.

30+ days ago

Denver, CO

$68,300–$152,766 / year

As 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. May provide overall coordination of processes related to budgeting, estimating, forecasting, accounting and work order management, in support of existing engineering projects or packaging proposals for future projects.

13 days ago

Golden, Colorado

As 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. Coordinates/leads projects or portions of projects (including phases such as research, design, equipment selection, procurement support, installation and commissioning), under the direction of a higher-level engineer or supervisor.

3 days ago

Denver, CO

p>Design and layout of power plant site microgrids and power distribution with medium and low voltage systems switchgear and motor control centers computer modeling analysis of electrical systems convenience power lighting systems grounding and lightning protection systems. However employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information unless the disclosure is a in response to a formal complaint or charge b in furtherance of an investigation proceeding hearing or action including an investigation conducted by the employer or c consistent with the contractors legal duty to furnish information.

30+ days ago

Littleton, CO

The Principal Hardware Engineer partners closely with cross-functional engineering teams, program leadership, and customers to solve complex technical challenges, support program execution and business development efforts, and shape the long-term technology roadmap for the organization. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.

30+ days ago

Denver, CO

$70,000–$156,600 / year

As 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. Coordinates/leads projects or portions of projects (including phases such as research, design, equipment selection, procurement support, installation and commissioning), under the direction of a higher level engineer or supervisor.

15 days ago

Aurora, Colorado

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Coordinates/leads projects or portions of projects (including phases such as research, design, equipment selection, procurement support, installation and commissioning), under the direction of a higher level engineer or supervisor.

2 days ago

Englewood, CO

Ability to perform complex engineering calculations, including load flow, short circuit, harmonics, equipment sizing, large motor starting, grounding, transient stability, electromagnetic transients, and insulation coordination. You will play a critical role in driving innovation, efficiency, and excellence across medium and large-sized projects while mentoring and guiding the electrical team.

30+ days ago

Denver, CO

$70,000–$156,000 / year

Preferred Experience & Skills: As 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. Coordinates/leads projects or portions of projects (including phases such as research, design, equipment selection, procurement support, installation and commissioning), under the direction of a higher level engineer or supervisor.

30+ days ago

Denver, Colorado

As 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. Demonstrated history of design engineering or operations/performance engineering of thermal power generation technology (gas turbines, steam turbines & boilers, reciprocating engines, geothermal and nuclear cycles, etc.).

9 days ago

Arvada, CO

$165,000–$200,000 / year

p>Recent projects our team has led include successfully testing a molten salt pump for next generation nuclear reactors on FLiBe, delivering a blower that will ride on NASA's Dragonfly to Saturn's moon Titan, development of a new oxygen fan and water pump for NASA, and successfully developing propellant turbopumps for multiple flight vehicles.

ITAR Requirements:

To conform to U.S. Government commercial space technology export regulations, including the International Traffic in Arms Regulations (ITAR), 8 U.S.C. § 1324b(a)(3), applicants for employment at Barber-Nichols must be a U.S. citizen or national, lawfully admitted for permanent residence into the U.S. (i.e., current green card holder), or lawfully admitted as a refugee or granted asylum under 8 U.S.C. § 1157-1158.

17 days ago

Denver, CO

$110,000–$165,000 / year

You will partner closely with engineering leaders, architects, product teams, and stakeholders to deliver scalable, reliable, and maintainable solutions while helping drive adoption of AI-enabled development practices across the organization. We are seeking a Principal Engineer to serve as a senior individual contributor responsible for driving technical strategy, solving complex engineering challenges, and influencing architectural direction across multiple teams.

2 days ago

Westminster, CO

$140,000–$160,000 / year

p>The Principal Engineer - Design Team Lead is a player/coach role critical to GeoStabilization International (GSI)'s ability to scale high-quality engineering output while developing the next generation of technical leaders.

This role has clear runway into Director-level engineering leadership for individuals who demonstrate strong judgment, team-building capability, and sustained results.

30+ days ago

Arvada, Colorado

style="min-height:1.5em">We'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.

You will move beyond day-to-day drafting to architect robust power systems, solve complex protection coordination challenges, and lead the technical direction of the electrical engineering team.

30+ days ago

Westminster, CO

$150,980–$182,400 / year

p>Please 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. Your responsibilities will include serial communications and Ethernet networking, EMI mitigation, wiring, and electrical and data interfaces between all spacecraft subsystems.

30+ days ago

Centennial, CO

$164,164–$225,725.50 / year

Preferred Qualifications: • An active Top Secret with SCI eligibility U.S. Security Clearance is preferred • Extensive experience serving as a Responsible Engineer (RE), driving hardware through its lifecycle, including development, qualification, integration & Test, Verification & Validation, and certification • Experience with Electrical Architecture • Proficiency in electrical design software such as Capital, AutoCAD Electrical, Altium Designer, or similar tools • Experience with simulation software like SPICE, MATLAB/Simulink, Hyperlynx or similar • Expertise in PCB design and layout • Advanced understanding of power electronics and control systems • Extensive experience with microcontrollers and embedded systems • Ability to perform advanced circuit analysis and troubleshooting using tools like oscilloscopes, multimeters, and logic analyzers • Proficiency in programming languages such as C/C++ or Python for embedded systems development • Familiarity with CCSDS specifications for spacecraft and ground data flow • Proven experience in project management and the ability to lead large and complex projects • Strong leadership, communication, and interpersonal skills. Responsibilities include: • Leading advanced projects • Collaborating with a diverse team of engineers and technicians • Contributing to the development of innovative solutions • Mentoring less experienced engineers and technicians • Acting as the technical lead for specialized projects • Staying updated with the latest advancements in electrical engineering.

30+ days ago

Lone Tree, CO

$123,000–$129,000 / year

p>Our rapidly growing Industrial Design Group, which includes process, electrical, controls, structural, architectural, geotechnical, and civil disciplines, is a multi-faceted and leading-edge division of Kiewit with best-in-class technical expertise focused on EPC and design-build delivery of industrial projects in markets such as Food & Beverage, Consumer Products, Heavy Manufacturing, Industrial Buildings Industrial Water and Utilities.

At least 10+ years' experience performing Electrical engineering design for Industrial facilities (which could include Chemical plants, Mining/Mineral Processing, Power, Water/Wastewater, Processing plants, Advanced manufacturing plants, data centers, EV Battery).

30+ days ago

Denver, CO

$70,000–$156,600 / year

As 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. Coordinates/leads projects or portions of projects (including phases such as research, design, equipment selection, procurement support, installation and commissioning), under the direction of a higher level engineer or supervisor.

30+ days ago

Denver, Colorado

Remote

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This is a highly visible engineering role within our enterprise infrastructure organization, supporting multiple datacenters and environments while driving the design, architecture, implementation, and optimization of modern infrastructure solutions. You’ll play a key role in both greenfield deployments and the evolution of existing production environments, helping ensure our platforms remain scalable, resilient, secure, and future-ready.

20 days ago

Westminster, CO

$150,980–$182,400 / year

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.

30+ days ago

Englewood, CO

The ideal candidate brings deep technical expertise, leadership capability, and the ability to collaborate across multiple engineering disciplines to ensure successful project execution. We are seeking a highly experienced Principal Mechanical Engineer to serve as a senior technical leader on complex EPC (Engineering, Procurement, and Construction) projects.

30+ days ago

Denver, CO

p>Requires Bachelor's degree (or foreign equivalent) in Computer Science, Telecommunications or closely related, plus 12 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.

2 days ago

Arvada, CO

$197,000–$232,000 / year

p>Were 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 teams technical capabilities and fostering future leaders.

30+ days ago

Henderson, CO

$165,000–$190,000 / year

Successful candidates have a demonstrated technical track record in designing and implementing robust Software Test Infrastructure for complex hardware-based systems, bringing an exceptional system-level perspective and proficiency in software. The ideal candidate will embrace our goal to drive zero-emission, self-driving vehicle adoption, and help us realize our potential to define, build, and lead a new category of robotic automation for the enterprise.

30+ days ago

Greenwood Village, CO

$124,000–$220,000 / year

10 years of experience in the following: utilizing Performance Metrics such as latency, traffic, errors and saturation to optimize application performance; and performing analysis and optimization of system performance and scaling strategies for cloud services in complex enterprise production architectures. 5 years of experience in the following: evaluating system capabilities, identifying bottlenecks, and implementing solutions that ensure efficient and reliable operations in dynamic environments; and performing Data Visualization to present data and business insights to stakeholders.

2 days ago

$155,000–$180,000 / year

p>This role is accountable for defining and documenting control strategies and data interfaces between substation devices, generation resources, data centers, remote operation centers, and external entities, and for driving reliable data connectivity and control readiness from design, commissioning, and turnover.

Monitor construction progress remotely and via on site visits, support resolution of field issues, attend in person meetings with stakeholders, and provide on-site programming and field support during commissioning when required.

13 days ago

Denver, CO

$97,000–$156,600 / year

The successful candidate will work on modeling, analysis, and strategy development supporting Xcel's Colorado Clean Heat plans, Xcel's Net Zero Vision, cross-commodity long-term infrastructure plans, non-traditional solution development, and various other initiatives at the intersection of long-term planning, policy, and technology. As 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.

19 days ago

Denver, CO

Remote

$180,000–$250,000 / year

You will shape the long-term technical direction of the RF discipline, influence company leadership, grow senior engineering talent, and represent True Anomaly's capabilities externally to customers, partners, and the broader aerospace community. To 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.

30+ days ago

Denver, CO

$108,000–$168,000 / year
Full time

You'll write code that moves money in production, anchor the engineering on complex, high-impact, and open-ended problems, and set the technical direction other engineers build around as Xe rebuilds its platform layer. Track record anchoring large, ambiguous, cross-team technical efforts as an individual contributor: setting the technical direction other engineers build around, with impact measured by the engineers and teams you raise, not by personal output.

8 days ago

Denver, CO

$72–$92 / hour

The successful candidate will play a key role in managing multidisciplinary projects, developing client relationships, and helping drive the continued growth of our power and industrial infrastructure practice. We are seeking a Senior/Principal Mechanical Engineer to join our growing Power Group and help lead the design, delivery, and expansion of complex power generation and utility infrastructure projects.

1 day ago

Denver, Colorado

$136,100–$181,025 / year

The Principal Engineer will provide strategic direction for control systems design across municipal water/wastewater systems, power plants, industrial automation systems, microgrid control systems, and combined heat and power (CHP) systems for utilities, universities, campuses, and industrial facilities.

What You Will Be Doing:
Interpret, organize, execute, and coordinate complex control systems engineering assignments, often dealing with unique problems that have significant project impact.
Job Title - Principal Control Systems Engineer
Location - Denver, CO (Centennial)
Job Type – Hybrid
Requisition ID - 11155

Stanley Consultants is seeking a Principal Control Systems Engineer to serve as a technical specialist and leader with deep expertise in process instrumentation and control systems.
30+ days ago

Denver, CO

Remote

$130,000–$175,000 / year

p>What you'll be challenged to do:

As a Principal Transmission Line Engineer, you will lead and oversee transmission line project designs, serving as a subject matter expert in transmission line engineering. Our team excels in providing solutions for power transmission, distribution, and renewable energy, utilizing advanced technologies and creative problem-solving to meet today's diverse energy needs.

15 days ago

Denver, CO

$170,000–$220,000 / year

p>Supplier 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.

30+ days ago

Denver, CO

$190,000–$220,000 / year

This role combines deep technical execution with strategic leadership, including shaping technical direction, mentoring engineers, and driving system-level decisions across the full product lifecycle from concept development through production and sustainment. Principal Embedded Engineer, you will act as a technical authority and engineering leader, responsible for architecting and delivering complex embedded systems across a diverse range of applications.

22 days ago

Louisville, Colorado

p style="min-height:1.5em">This role provides an opportunity to work on innovative technologies in augmented reality (AR), virtual reality (VR), and advanced optical sensor systems, helping redefine how pilots and warfighters train and operate.

Lead, grow, and mentor a team of Mechanical Analysis Engineers, provide technical guidance, design leadership, and foster a collaborative and innovative work environment.

30+ days ago

Louisville, Colorado

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Experience authoring and reviewing Interface Control Documents (ICDs), Concepts of Operation, Trade Studies, Documentation Trees, Engineering Management Plans, Engineering Change Packages or similar systems engineering artifacts. The Principal Systems Engineer will operate in a cross-functional environment supporting hardware, software, optics, test, and airworthiness teams to ensure technical performance, compliance, and mission readiness of complex integrated systems.

30+ days ago

Westminster, CO

$142,000–$189,500 / year

As a principal hardware team member, you will be responsible for RF system and hardware designs from initial concept through requirements definition, architecture definition, part selection, detailed design, analysis, manufacturing, testing, qualification, and in-orbit support of Cesiums products.

30+ days ago

Westminster, CO

$150,000–$180,000 / year

Required skills and experience include thermal management design, precision machining principles, thermal simulation and analysis, shock and vibration simulation and analysis, electromagnetic interference/compatibility (EMI/EMC) mitigation techniques, geometric dimensioning and tolerancing (GD&T), finite element analysis (FEA), and cost analysis to develop, validate, and optimize mechanical designs.

Please 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.

1 day ago

Denver, Colorado

Employees will be expected to work in the Westminster, CO office 3 days per week on Tuesdays, Wednesdays, and Thursdays.

The Principal Engineer - Design Team Lead is a player/coach role critical to GeoStabilization International (GSI)’s ability to scale high-quality engineering output while developing the next generation of technical leaders.

30+ days ago

Littleton, CO
However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information. The Principal Systems Engineer works collaboratively with program managers and project engineers to ensure successful program execution and is responsible for guiding program teams to solving problems through a wholistic, systems engineering approach.
30+ days ago

Denver, CO
p>This is a highly visible engineering role within our enterprise infrastructure organization, supporting multiple datacenters and environments while driving the design, architecture, implementation, and optimization of modern infrastructure solutions. Youll play a key role in both greenfield deployments and the evolution of existing production environments, helping ensure our platforms remain scalable, resilient, secure, and future-ready.
30+ days ago

Westminster, CO
$158,000–$190,000 / year
Please 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 Skylark product line is focused on the rapid design, build, and test of cutting-edge active phased array antennas (AESA) for terrestrial and airborne applications.
30+ days ago

Louisville, CO
Lead end-to-end efforts in Rendezvous, Proximity Operations (RPO), and docking activities, including mission planning, trajectory optimization, system integration, and operational execution to ensure precise and reliable spacecraft interactions. • Ability to explain complex design concepts, sub-system relationships, and internal GNC interactions to the team; train and guide GNC engineers for career development; develop high-level roadmap program documentation.
30+ days ago

Denver, CO
$287,570–$345,084 / year
p>Deep expertise in at least two of:
• Cloud infrastructure • Kubernetes/container platforms • CI/CD systems • Networking/service connectivity • Observability • Security • Developer tooling. As a Senior Principal Engineer, you will set technical direction and lead cross-organizational initiatives that strengthen our platform, developer experience, and operational excellence.
30+ days ago

New
Denver, CO
$81,000–$156,600 / year
p>As 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.
6 days ago

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Principal Engineer Jobs in Littleton, CO

Principal SDET, Cybersecurity Test Engineer Joulé

Principal RF Systems/Hardware Engineer - Cleared On-site The Computer Merchant, Ltd

Construction Contract Administrator (Mechanical or Electrical) Jobot

Director, Agentic AI TTEC

Senior or Principal Engineer - Integrated System Planning (Electric) Xcel Energy Inc

Applied Research Team Leader / Principal Engineer / Principal Scientist Applied Research Associates Inc

System Protection Engineer (Entry, Staff, Senior or Principal) Xcel Energy Inc

Transmission Outage Coordination Engineer (Entry, Staff. Senior, or Principal) Xcel Energy

Principal Electrical Engineer - Power Plant Stanley Consultants Inc

Principal Electrical Engineer Trident Systems Inc

Gas Systems Engineer (Entry, Staff, Senior or Principal) Xcel Energy Inc

Reliability Engineer (Entry, Staff, Senior or Principal) Xcel Energy

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