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345 software testing jobs at 147 companies in Castle Rock, CO

1mo
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Software Systems Testing Engineer
Littleton, Colorado, United States
$77k-$135k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Top Secret-eligible US citizen with professional experience in software testing/integration, automation scripting in Python or C++, test plan creation, HIL qualification, Agile experience, and strong communication skills.
Python, C++, Hardware-in-the-Loop (HIL), National Instruments, Speedgoat, Oscilloscope, Digital multimeter, Logic analyzer, Protocol analyzer, MATLAB, Simulink, STK, CI/CD, Agile Scrum
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3w
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Software Test Lead
Golden, Colorado, United States
$105k-$145k/yr OnsiteFull Time
Lunar Outpost
Lunar Outpost: Develops autonomous robotic systems and rovers for lunar exploration.
5+ YOE2+ MgmtBachelor's in CS/Aerospace or related, 5+ years software testing experience (2+ years leadership), embedded/real-time testing experience, proficiency with test tools/automation, strong communication and systems engineering skills, U.S. Person.
Hardware-in-the-loop (HIL), cFS, VxWorks, CI/CD
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Software Engineer
Colorado Springs, Colorado, United States
$95k-$150k/yr OnsiteFull Time
Capstone Research Corporation
Capstone Research Corporation: Provides defense-focused systems engineering and R&D services.
3+ YOEBachelor's degree in software engineering/computer science, 3+ years software development experience, proficiency in modern C++ (C++17+), Python/MATLAB and Bash scripting, unit testing with Google Test/Mock, U.S. citizenship, ability to obtain DoD Secret clearance, ~10% travel.
Bash, Python, MATLAB, C++ (C++17), Google Test, Google Mock, CI/CD, Windows, Linux
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2mo
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Software Engineer
Colorado Springs, Colorado, United States
$104k-$166k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
5+ YOEDevelop, integrate, test, and sustain software for NORAD/NCMC IT systems; TS/SCI clearance; DoD/classified environment experience.
Java, Python, Docker, Kubernetes, Git, GitLab, Jenkins, Jira, Confluence, Maven, Gradle
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Software Engineer-
Denver, Colorado, United States
$80k-$88k/yr OnsiteFull Time
Broadridge
BroadridgeNYSE: BR: Provides technology and infrastructure for global financial services.
Bachelor's degree or equivalent; experience designing, developing, testing, and maintaining enterprise software; knowledge of Windows/Linux, multithreading, socket programming, SDLC, and collaboration skills.
Windows, Linux, UNIX
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1w
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Software Engineer
Chesterfield or Greenwood Village
$85k-$140k/yr HybridFull Time
MiTek
MiTekNYSE: BRK-B: Provides software and automation for the building industry.
2+ YOEBachelor's in CS or related, 2+ years software development experience, experience with C#/.NET, SQL Server, web fundamentals, Git, testing, and strong communication and problem-solving skills.
C#, .NET, SQL Server, HTML, CSS, JavaScript, Git, TypeScript, Angular, React, REST APIs, Azure DevOps, Azure, AWS, Application Insights, DataDog
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2mo
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Junior Software Engineer
Denver, Colorado, United States
$85k-$115k/yr OnsiteFull Time
Performance Drone Works
Performance Drone Works: Manufacturer of autonomous, tactical unmanned aerial systems for defense.
0+ YOEBachelor's in CS/related field; 0-3 years software development; familiar with C++, Linux, Git, and testing.
C++, Linux, Git, CMake, REST APIs, Build Systems
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1mo
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Principal Software Engineer
Warsaw or Fridley or Mounds View or Brooklyn Park or Fort Worth or North Haven or Jacksonville or Boston or Lafayette
$153k-$229k/yr OnsiteFull Time
Medtronic
MedtronicNYSE: MDT: Developing and manufacturing medical technologies and therapies globally.
5+ YOEBachelor's + 7+ years software engineering or advanced degree + 5+ years; experience designing, developing, testing and deploying scalable, reliable software for manufacturing; leadership, mentoring, and cross-functional collaboration.
Ignition, deviseWISE, Azure, AWS, Docker, Kubernetes, Jenkins, Terraform, React, Angular, Node.js, ASP.NET, HTML5, CSS3, WebAPI, Microservices Architecture, Test-Driven Development, Agile & Scrum, CI/CD Pipelines, RESTful API Design, Java, C++, NET, Scala, Lua, Python, SQL
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Software Engineer
United States or Boston or New York City or Denver
$110k-$125k/yr RemoteFull Time
Spoiler Alert
Spoiler Alert: SaaS platform for managing and liquidating surplus food inventory.
2+ YOE2+ years professional software engineering experience; full‑stack web development using TypeScript, React, Express, and MongoDB; strong testing, collaboration, and productive use of AI coding tools.
TypeScript, React, Express, MongoDB
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1w
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Software Engineer
Cary or Chicago or Peoria or Westminster or Irving
$98k-$158k/yr OnsiteFull Time
Caterpillar
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
5+ YOE5+ years software development experience; Bachelor's in CS/SE/CE or equivalent; experience with React/Next.js/TypeScript, Java Spring Boot or Node.js; CI/CD, automated testing, and Agile practices.
React, Next.js, TypeScript, Java Spring Boot, Node.js, JavaScript, AWS, Azure, Vercel, Claude Code, GitHub Copilot, Copilot CLI, Claude, ChatGPT, Gemini, Cursor
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1w
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Senior Software Engineer, Golang
Minneapolis or Charlotte or Denver
$119k-$150k/yr HybridFull Time
RVO Health
RVO Health: Provides digital health information and consumer wellness solutions.
5+ YOEBachelor's or equivalent,5+ years software development experience,proficiency in multiple programming languages,software testing experience,and strong communication and problem-solving skills.
Go, PHP, JavaScript, Python, TypeScript, Java, C#, C++, Node.js, GraphQL, REST APIs, NoSQL, AWS, IaC, AI for code generation
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3mo
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Software Test Engineer
Aurora or Annapolis Junction
$60-$96/hr RemoteFull Time
EverWatch
EverWatch: Develops software and intelligence systems for government agencies.
3+ YOE3+ years software engineering in Agile; testing, JS/TS/Java; Playwright/Cypress; REST APIs; CI/CD; TS/SCI with polygraph; Bachelor's degree; ISTQB desirable.
Playwright, Cypress, JavaScript, TypeScript, Java, GitHub Actions, Jenkins, GitLab CI, Bitbucket Pipelines, REST APIs, Selenium
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3w
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Software Engineer
Colorado Springs or Boston
HybridFull Time
Odyssey Systems
Odyssey Systems: Provides engineering, integration, and technical services to defense clients.
1+ YOEUS citizen with active Secret clearance, B.S. in a STEM field, 1+ years software development experience; proficiency in TypeScript/Python/Java/C++/Rust/Julia, React, REST APIs, and writing tested, maintainable code.
TypeScript, Python, Java, C++, Rust, Julia, React, Cesium, Resium, Electron, MATLAB, NumPy, SciPy, GeoJSON, CZML, React Testing Library
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1mo
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Software Engineer II
Colorado Springs, Colorado, United States
OnsiteFull Time
MKS2 Technologies
MKS2 Technologies: Delivers cybersecurity and IT solutions to government agencies.
4+ YOE4+ years software engineering experience; Java required, C++ preferred; Docker and CI/CD experience; unit testing (JUnit/Google Test); active Secret clearance; Bachelor's degree required; must work onsite in secure facility.
Java, C++, JUnit, Google Test, Docker, Kubernetes, CI/CD, Jenkins, Atlassian Bamboo, GitLab CI, GitHub Actions
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2w
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Staff Software Engineer
Westminster, Colorado, United States
$102k-$150k/yr HybridFull Time
Vantor
Vantor: Providing AI-powered spatial intelligence and high-resolution Earth observation.
5+ YOEU.S. Person required, 5+ years building complex software, expertise with Python/Django, Linux, REST/JSON/YAML, test automation, CS/Engineering degree or equivalent.
Python, Django, Ubuntu, RHEL, CENTOS/AL3, REST, JSON, YAML, Cucumber, Gherkin, Behave, K8S, docker, jenkins, helm, terraform, RabbitMQ, PostgreSQL, Redis, Elasticsearch, Ruby, Go, CI/CD, EMR
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3d
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Senior Software Test Engineer
Denver, Colorado, United States
$130k-$155k/yr HybridFull Time
Astroscale
AstroscaleTokyo Stock Exchange: 186A: Provides on-orbit satellite servicing and orbital debris removal solutions.
8+ YOE8+ years software engineering with 3+ years in software test development; professional Python and C/C++ experience; Git, Docker, cloud services, CI/CD, bash, Linux; strong communication and critical thinking; STEM degree.
Python, C, C++, Git, Docker, cloud services, CI/CD, bash, Linux
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3mo
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Staff Software Engineer, Integrations
San Francisco or Denver or Nashville or Santiago
$224k-$264k/yr HybridFull Time
Checkr
Checkr: AI-powered platform for background checks and identity verification.
10+ YOE10+ years software development; 3+ years leadership; backendRuby/Node.js with frontend JS/React; scalable systems; mentoring.
Ruby, Node.js, JavaScript, React, Testing, Observability
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1w
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Staff Software Engineer
Tysons Corner or Boston or Chicago or Denver or Jericho or Jersey City or New York or Rockville or Washington or Woodbridge
$84k-$180k/yr HybridFull Time
FINRA
FINRA: Regulates brokerage firms and exchange markets in the United States.
2+ YOEBachelor's in CS or related, 2+ years experience, strong CS fundamentals, object-oriented development, system design, cloud, DevOps/CI/CD, test automation, and software security awareness.
DevOps, CI/CD
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4w
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Senior Software Engineer
Denver, Colorado, United States
$120k-$150k/yr HybridFull Time
Litera
Litera: AI-powered document and workflow software for legal professionals.
Proven professional software development experience with Clojure, solid SQL/PostgreSQL skills, RESTful API design, SaaS architecture knowledge, testing and engineering best practices, and strong collaboration and communication.
Clojure, ClojureScript, SQL, PostgreSQL, RESTful APIs, AWS, Docker, RabbitMQ, ElasticSearch
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1mo
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Senior Software Engineer
Colorado Springs, Colorado, United States
$120k-$160k/yr OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
5+ YOEBachelor's degree and 5+ years' experience, active Secret clearance, experience with C/C++, Java, Python, FORTRAN, and Agile development; ability to develop, test, and deploy software for radar systems.
C/C++, Java, Python, FORTRAN, Agile
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