53 software engineer iii jobs at 25 companies in Frederick, CO

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
2mo
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Software Engineer III
Centennial or Louisville
$130k-$178k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
5+ YOERequires bachelor’s degree and 5+ years experience; proficient in multiple languages; able to mentor; U.S. security clearance required.
Git, GitHub, GitLab, Bitbucket, Docker, Kubernetes, Helm, ArgoCD, Python, React, FastAPI, AWS, JIRA, Confluence, Bash, PowerShell, Ansible, MySQL, PostgreSQL, MongoDB
1w
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Software Engineer III
Lone Tree or Sparks or Longmont or Hagerstown or Herndon or Englewood
$108k-$149k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
6+ YOEBachelor's degree in CS/Software Engineering or related,6+ years software development experience,proficiency in C++,Java,Python,experience with RTOS/embedded systems preferred,excellent communication and critical thinking.
C++, Java, Python, C, C#, HTML, Bash
4d
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Software Engineer III
Denver, Colorado, United States
$142k-$165k/yr OnsiteFull Time
Cleerly
Cleerly: Provides AI-driven solutions to analyze and prevent heart disease.
5+ YOE5–8 years software engineering experience, fullstack development, proficiency with React, Node.js, TypeScript, RESTful APIs and PostgreSQL; experience with cloud containers, CI/CD, and system design; Bachelor's/Master's or equivalent.
React, CSS, Node.js, TypeScript, RESTful APIs, PostgreSQL, Google Workspace (GMail, Drive, Docs, Sheets, Slides), Slack, Confluence, Jira, Zoom Video, Next.js, Ant, Docker, AWS EKS, CI/CD, Python
1mo
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Software Engineer III
Denver, Colorado, United States
$99k-$198k/yr OnsiteFull Time
Walmart
WalmartNYSE: WMT: Multinational retail operating discount stores and supermarkets.
2+ YOEBachelor's in CS or related +2 years experience or 4 years' software engineering experience; proficiency in C/C++, Python, Go, JavaScript; cloud (AWS, GCP); CI/CD, debugging, API design, unit testing, and mentorship experience.
C/C++, Go, Python, JavaScript, AWS, GCP, CI/CD, WCAG 2.2 AA
1mo
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Software Engineer III
Greenwood Village or Denver
$130k-$150k/yr HybridFull Time
MiTek
MiTekNYSE: BRK-B: Provides software and automation for the building industry.
5+ YOEBachelor's in computer science or related field, 5+ years professional software development, professional experience with C# and .NET, desktop application development, strong debugging and OOP skills.
C#, .NET, C++, Azure DevOps
4d
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Software Engineer III
Littleton, Colorado, United States
$93k-$164k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
3+ YOEUS citizen with ability to obtain Top Secret clearance, 3+ years professional experience, programming in C/C#/C++, LabView, Python or TestStand, hardware/software integration and test equipment experience.
C, C#, C++, LabView, Python, TestStand, Jira, Atlassian
2mo
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Embedded Software Engineer III - Lunar Permanence
Seattle or Denver or Seattle
$165k-$231k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
6+ YOE6+ years embedded software in C/C++, Rust with Linux; BSP/driver development; hardware debugging with test equipment; strong C/C++/Rust and Linux scripting; teamwork.
C/C++, Rust, Linux, GDB, XSDB, Logic Analyzer, Oscilloscope, JTAG, Python, Matlab
4w
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Software Engineer III
Denver or Nashua or Augusta or Pinellas Park or Madison Heights
$125k-$145k/yr HybridFull Time
WOW!
WOW!: Provides broadband internet, cable television, and digital phone services.
3+ YOEFull-stack engineer with 3+ years building scalable web applications using Next.js and Node.js, strong AWS experience, REST/GraphQL APIs, serverless, CI/CD, AI-assisted tooling, and familiarity with web performance and accessibility standards.
Next.js, Node.js, REST API, GraphQL, Serverless, AWS, EC2, Lambda, S3, CloudFront, API Gateway, ECS, EKS, WAF, IAM, GitHub Copilot, Cursor, Claude, Contentful, Optimizely, LaunchDarkly, Google Analytics 4 (GA4), CI/CD
1w
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Flight Software Engineer III
Louisville, Colorado, United States
$93k-$162k/yr HybridFull Time
Arcfield
Arcfield: Systems engineering and mission support for defense and space.
Degree in engineering/computation with multi-year experience, strong embedded systems and RTOS knowledge, proficiency in C/C++/Python/Bash, git and CI/CD, containerization, and communication protocols.
C, C++, Python, Bash, git, Podman, Docker, Docker-Compose, CI/CD, RTOS, TCP/IP, UDP
6d
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System Software Engineer III
Longmont, Colorado, United States
$115k-$145k/yr HybridFull Time
Autonomous Solutions
Autonomous Solutions: ASI develops autonomous vehicle systems and fleet management software.
5+ YOE5+ years writing production compiled-language code, Linux/Ubuntu/Yocto experience, debugging multi-threaded systems, hardware verification, strong problem-solving and collaboration skills.
Rust, C++, Python, Ubuntu, Yocto
2w
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Software Engineer III, Device Connectivity
Atlanta or Boston or Chicago or Denver or Los Angeles or New York City or San Francisco or Austin or United States
$130k-$160k/yr RemoteFull Time
Flock Safety
Flock Safety: Sells AI-powered cameras and software for public safety surveillance.
3+ YOE3+ years in embedded/OS-level development, deep Android/AOSP and cellular connectivity experience, telemetry and networking proficiency, strong cross-functional collaboration and communication.
Android, AOSP, SELinux, Radio Interface Layer (RIL), AT commands, eSIM, Qualcomm, TCP/IP
1mo
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Software Dev Engineer III - AMZ9899639
Boulder, Colorado, United States
$168k-$227k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
5+ YOEMaster's or Bachelor's in CS/Engineering/Math (or related) with corresponding experience; experience designing large-scale distributed systems, object-oriented design, and development in Java, C++, or C#; technical leadership and project management experience.
Java, C++, C#
12h
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Software Engineer III, Generative AI, Workspace Drive
Boulder, Colorado, United States
$147k-$211k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
2+ YOEBachelor's degree or equivalent experience, 2+ years software development, experience with GenAI/LLMs or related concepts, data structures and algorithms knowledge, strong communication and problem-solving skills.
2w
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Engineer III
Aurora, Colorado, United States
$85k-$90k/yr OnsiteFull Time
Oneida Technical Solutions
Oneida Technical Solutions: Provides managed IT and cybersecurity services for government clients.
5+ YOEBachelor's in engineering, 5+ years systems engineering or hardware/software integration, active or obtainable Secret clearance, IAT-Level II, ability to lift 50 lbs, strong system design, testing, and HMI experience.
2mo
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Water/Wastewater Engineer III
Lakewood, Colorado, United States
$100k-$125k/yr OnsiteFull Time
Bowman Consulting Group
Bowman Consulting GroupNASDAQ: BWMN: Provider of engineering and infrastructure consulting services.
5+ YOEBachelor's degree in civil/environmental/mechanical engineering; 5+ years in water/wastewater projects; PE license preferred; experience with design software; proficient in Microsoft Office.
AutoCAD, Civil3D, Hydraulic Modeling, Microsoft Office
3w
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Civil Engineer III, Traffic
Fort Collins, Colorado, United States
$87k-$145k/yr OnsiteFull Time
City of Fort Collins
City of Fort Collins: Providing municipal governance and public services for residents.
5+ YOE5+ years traffic engineering experience; college degree or equivalent experience; valid driver’s license; PE registration (Colorado) or ability to obtain; PTOE preferred; ability to use CAD, GIS, Synchro, and spreadsheet/statistical software.
Synchro, Geographic Information System software, computer assisted engineering and design software, computer-aided design
1w
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Structural Facility Engineer III
Greenwood Village, Colorado, United States
$102k-$138k/yr OnsiteFull Time
Merrick & Company
Merrick & Company: Employee-owned firm providing engineering, architecture, and geospatial solutions.
10+ YOE10+ years commercial or governmental facility structural design experience; PE license required; experience with building codes, structural analysis software, AutoCAD/Revit, client interfacing, and managing engineers.
AutoCAD, Revit, RISA 3D, SAP2000, STAAD Pro
3mo
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Designer II or III - Civil
Minneapolis or Fargo or San Antonio or Denver
$100k-$152k/yr HybridFull Time
Mortenson
Mortenson: Provides construction, real estate development, and engineering services.
Associates or Bachelor in Engineering Technology or related field; CAD/Drafting expertise; 4+ years (Designer II) or 6+ years (Designer III) in civil/site design; experience with grading, drainage, stormwater; strong CAD and software skills.
AutoCAD Civil 3D, Civil 3D Grading, AutoCAD, AutoLISP/CAD automation, AutoCAD Vault, PVcase, Google Earth, ArcGIS/GIS, MicroStation, Revit, Geopak, InRoads, Microsoft Office
1mo
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Manager III, Software Development - Content Data Platform
Austin or Bozeman or Denver or Minneapolis or Missoula or Portland or Salt Lake City or Seattle or Charlotte or Kalispell or Boise or Charleston or Dallas or Fort Worth or Phoenix or Richmond or Spokane or Vermont
$150k-$188k/yr RemoteFull Time
onXmaps
onXmaps: Digital mapping and navigation apps for outdoor recreation.
5+ Mgmt5+ years managing software engineers; experience building data platform/infrastructure and migration off legacy systems; hiring and team development skills; experience with data quality, SLOs, and operational reliability; US work authorization required; ability to travel.
GCP, Managed Spark, BigQuery, BigLake, Pub/Sub, Managed Airflow, Apache Iceberg, Spark, PySpark, DuckDB, dbt, Airflow, GDAL, PostGIS, Apache Sedona, DuckDB spatial extensions, Knowledge Graph, AI-assisted tools
3w
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Business Applications Developer III
Denver, Colorado, United States
$110k-$126k/yr HybridFull Time
Exponential Technology Group
Exponential Technology Group: Distributes electronic components and provides specialized engineering design services.
5+ YOEBachelor's in CS/IS or related required, 5+ years professional software development experience, strong Dynamics 365 and Azure experience, CI/CD, Git, stakeholder collaboration, and mentoring ability.
Microsoft Dynamics 365, Microsoft Dynamics 365 Finance & Operations, Microsoft Dynamics 365 Project Operations, Microsoft Power Apps, Microsoft Azure, Git, Microsoft Azure DevOps