50 software developer iii jobs at 23 companies in Denver, 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
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
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
1d
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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
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
1d
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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
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
1w
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Data Systems Software Engineer II/III
Boulder, Colorado, United States
$100k-$157k/yr HybridFull Time
University of Colorado Boulder
University of Colorado Boulder: Public research university offering undergraduate and graduate education programs.
2+ YOEBS/BA in computer or physical sciences, 2+ years scientific software/data processing experience (II:2-4 yrs; III:5-8 yrs), Linux development, collaboration skills, strong communication and documentation.
Linux, Command Line Interfaces (CLIs), APIs, Git, GitHub, Bitbucket, GitLab, Amazon RDS, PostgreSQL, MySQL, SQLite, Continuous Integration/Continuous Deployment (CI/CD)
3w
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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
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#
5d
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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
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
2w
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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
2d
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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
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
1w
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AI System Developer III
Lakewood, Colorado, United States
$106k-$131k/yr HybridFull Time
Tallgrass
Tallgrass: Provides midstream energy infrastructure and delivery services.
4+ YOEDesign and implement RAG, multi-agent systems, LLM fine-tuning, model serving, integrations, CI/CD, and AI security; 4+ years IT/AI development experience; Python, SQL, MS Office proficiency; valid driver's license.
Python, MS SQL, Oracle, Microsoft Excel, Microsoft Word, Microsoft Access, Microsoft PowerPoint, Microsoft Outlook, Microsoft .NET, Docker, Kubernetes, MLflow
1mo
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Platform Engineer, AI (Levels I, II, III)
Denver or Long Beach
$120k-$235k/yr HybridFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
Software engineering experience (Python/TypeScript), familiarity with LLM APIs, REST/webhook integrations, ability to obtain Top-Secret clearance and U.S. work-authorization, strong communication and collaboration skills.
Python, TypeScript, REST APIs, webhooks, MCP, CrewAI, Pydantic AI, LangChain, AWS, Azure, GCP, Slack, Jira, Confluence, CI/CD
1mo
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Forward Deployed Engineer III, Generative AI, Google Cloud
San Francisco or Atlanta or Boulder or Cambridge or Chicago or Addison or Detroit or Irvine or Kirkland or Los Angeles or Miami or Mountain View or New York or Portland or Reston or San Diego or Seattle or Sunnyvale or Washington D.C.
$174k-$252k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
5+ YOE5 years software development; AI systems on cloud; production-grade AI solutions; customer engagement; data pipelines with vector DB/RAG
Python, LangGraph, CrewAI, ADK, RAG, Vector Databases, LLM Metrics, Vertex AI, MCP servers
1w
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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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Embedded Firmware Engineer
Carson City or Webster or Harbor City or Platform or Jessup or Clinton or Newark or Longmont
$79k-$150k/yr OnsiteFull Time
Vitesse Systems
Vitesse Systems: Designs and manufactures antenna and thermal systems for defense.
2+ YOEBS or MS in Electrical Engineering or related robotics field; 2+ years Level I, 5+ Level II, 8+ Level III firmware/embedded software; C++, Python; RTOS; hardware bring-up; ITAR compliance.
C++, Python, C, VHDL, Verilog, Linux, RTOS, ROS, Git, EtherCAT, SPI, CAN, I2C, UART, RS-232