29 principle developer jobs at 15 companies in Frederick, CO

3w
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Software Engineer II
Lone Tree or Sparks or Longmont or Hagerstown or Herndon or Englewood
$94k-$130k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
2+ YOEBachelor's in CS or related,2+ years software development experience,proficiency in C++,Java,Python,knowledge of engineering principles,ability to work in multidisciplinary teams.
C++, Java, Python, C, C#, HTML, Bash, RTOS, AI/ML
1mo
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Software Systems Engineer II
Centennial or Louisville
$106k-$145k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
2+ YOEBachelor's degree (or equivalent), 2+ years related experience, strong programming skills, software development principles, Agile experience, Git proficiency, and ability to obtain/maintain Secret U.S. security clearance; U.S. citizenship required.
DOORS, Rhapsody, NoMagic, MATLAB, Git
3mo
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Associate Electrical Engineer - Buildings
Denver, Colorado, United States
$76k-$105k/yr OnsiteFull Time
WSP
WSPToronto Stock Exchange: WSP: Provides engineering, design, and environmental consultancy services globally.
1+ YOEBachelor's in Electrical/Architectural Engineering; 1-3 years electrical design experience; knowledge of electrical engineering principles; AutoCAD & Revit proficiency; able to coordinate with regulators and teams.
AutoCAD, Revit, Microsoft Excel
1w
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Design Analytics Quality Engineer
Westminster, Colorado, United States
$97k-$165k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
4+ YOEBS in Engineering (or equivalent) plus 4+ years experience; expertise in manufacturing analytics (SPC, DOE, yield, anomaly analysis, CoPQ); ability to assess small data sets and develop sampling/inspection plans; familiarity with Quality Engineering principles; eligible for security clearance.
JMP, Python, MATLAB
3w
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Transmission Engineer I
Spring or New Orleans or Atlanta or Charlotte or Palm Beach Gardens or Denver or Hartford
$75k-$95k/yr OnsiteFull Time
United Utility Services
United Utility Services: Provides engineering and construction for electrical power infrastructure.
Bachelor's in engineering, ability to obtain EI within one year, understanding of engineering principles, drawing interpretation, strong analytical and communication skills, Microsoft Office proficiency.
Microsoft Office, AutoCAD, PLS-CADD, PLS-POLE, PLS-TOWER
1w
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Engineer II - Quality
Westminster, Colorado, United States
OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
2+ YOEBS in Engineering plus 2+ years related experience (higher degree may substitute), knowledge of quality engineering principles and industry specs, experience with APQP/AS9145 and SPC, willing/eligible for security clearance.
APQP/AS9145, SPC, First Article Inspection (FAI)
3w
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2026-2027 Colorado/Utah Entry-Level Engineer
Denver or Salt Lake City or Fort Collins
OnsiteFull Time
The Whiting-Turner Contracting Company
The Whiting-Turner Contracting Company: A national general contractor providing construction management and project delivery services.
Bachelor's in engineering, engineering technology, or construction management; knowledge of engineering principles; effective verbal and written communication; ability to read drawings and coordinate construction work.
2w
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Project Engineer/Cost Controls
Golden, Colorado, United States
OnsiteFull Time
ESI Construction
ESI Construction: Provides general contracting and construction management for commercial projects.
3+ YOEBachelor in Construction Management or Engineering, 3+ years project engineer experience in construction, knowledge of scheduling, cost control, contract documents, LEED principles, and strong communication and organizational skills.
Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft Project
4d
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Cloud Cyber Engineer
Sterling or Denver
$75k-$158k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOEActive TS/SCI with Poly required; Bachelor's in related field; 5+ years relevant experience (7+ without degree); knowledge of IA principles, DOD/IC security controls, networking, and security technologies.
Linux, SNOW
2mo
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Principal/Sr. Principal DevOps Engineer
Aurora or Morrisville
$114k-$171k/yr HybridFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
5+ YOEActive Top Secret/SCI clearance with CI Polygraph; Bachelor's degree with 5+ years (Principle) or 8+ years (Sr. Principal) experience; Linux/Unix admin; Agile; 3+ of preferred qualifications.
Terraform, Kubernetes, AWS, Flux, Helm, DynamoDB, NATS, Grafana, Prometheus, Loki, Jenkins, GitLab, Bamboo
1d
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Staff Environmental Compliance Engineer
Denver, Colorado, United States
$86k-$120k/yr OnsiteFull Time
Metro Water Recovery
Metro Water Recovery: Operates wastewater treatment and recovery services in Denver.
Apply engineering and regulatory principles to evaluate environmental compliance, perform technical analyses, support permitting/reporting, and prepare regulatory documentation; valid driver’s license and bachelor’s degree in engineering required.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Power BI, Alteryx
1w
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Software Quality Engineer 2
Centennial, Colorado, United States
$78k-$130k/yr OnsiteFull Time
United Launch Alliance
United Launch Alliance: Aerospace providing space launch services for satellites.
2+ YOEBachelor in STEM,2+ years in software quality or related field; experience with Linux/CLI, Python, C/C++, Git, defect tracking; familiarity with AS9100/DO-178C and SDLC/verification principles.
Linux, CLI, Python, C, C++, Git, Atlassian, GitLab
3mo
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Senior Engineer - Underground Electric Transmission
Lakewood, Colorado, United States
$130k-$190k/yr OnsiteFull Time
Qualus
Qualus: Engineering and advisory services for power grid infrastructure.
5+ YOEStrong knowledge of electric design principles; ABET-accredited degree in Civil or Electrical Engineering; 5-10+ years in electric transmission and distribution for public utilities; knowledge of design software; PE license or ability to obtain; valid driver's license.
Autodesk software, Power Line Systems, O-CALC, Pull Planner, Voltage Drop & Flicker, Microsoft Office
3w
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Strategy and Business Development Team Member
San Francisco or New York City or Denver or Austin or Calgary or Toronto or United States
$119k-$138k/yr RemoteFull Time
Intersect
IntersectNASDAQ: GOOGL: Develops-located data centers and renewable energy infrastructure.
Bachelor's in a quantitative field preferred; experience developing first-principles engineering/techno-economic models; proficiency in Python or similar; strong analytical and communication skills.
Python, Julia, MATLAB, R
2mo
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Dynamics and Technical Lead - Acoustics Mechanical Engineering
Littleton or Sunnyvale
$105k-$208k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Experience in structural dynamics and vibration/acoustic testing; familiarity with FEA tools (NASTRAN, NX), structural analysis principles, test planning/execution, and ability to obtain/maintain Secret clearance; US citizenship required.
FEA, NASTRAN, NX, Abaqus, ADAMS, LS-Dyna, Matlab, Mathcad, CREO
4w
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AI FinOps Consultant
Denver or Portland
$133k-$163k/yr OnsiteFull Time
Slalom
Slalom: Provides business and technology consulting and software engineering services.
3+ YOE3+ years in FinOps/cloud cost management; knowledge of FinOps principles, cloud platforms, AI cost drivers, billing/FOCUS formats, analytics, and strong communication; experience building dashboards and client deliverables.
FOCUS format, AWS, AWS Cost Explorer, AWS CUR, Microsoft Azure, Azure Cost Management, Google Cloud, Google Cloud Billing, CloudHealth, Apptio Cloudability, Flexera, Harness, Power BI, Tableau, Looker, Microsoft Excel, Azure OpenAI, Amazon Bedrock, Google Vertex AI, OpenAI APIs, Databricks, Snowflake, Kubernetes

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