66 api test engineer jobs at 46 companies in Castle Pines, CO
4w
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API Engineer
Boulder, Colorado, United States
$80k-$110k/yr HybridFull Time
1+ YOEExperience building and maintaining APIs, data schemas/versioning, testing and CI/CD; proficiency with Git, Linux, and modern programming languages; Master's or Bachelor's plus 1-2 years API/pipeline experience.
Python, REST, JSON, OpenAPI, JSON Schema, Git, Linux, Docker, Terraform, CloudFormation, GitHub Actions, GeoJSON, GeoParquet, R, Shiny, Rust, AWS
1w
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Test Automation Engineer
Denver, Colorado, United States
$90k-$190k/yr HybridFull Time
3+ YOEBachelor's degree or equivalent experience; 3–6 years in software quality engineering, including 2+ years in test automation; programming, UI automation, API testing, CI/CD, Git, agile, and communication skills.
Selenium WebDriver, Playwright, Cypress, Appium, Java, JavaScript, TypeScript, Python, C#, REST Assured, Postman, Pact, JMeter, k6, Jenkins, GitHub Actions, GitLab CI, Azure DevOps, Docker, Git, Jira, Xray, Zephyr, TestRail, Cucumber, AWS, Azure, Google Cloud, Kubernetes, XCUITest, Espresso
3mo
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Principal Integration and Test Engineer
Boulder, Colorado, United States
$160k-$180k/yr OnsiteFull Time
3+ YOEDesign, develop, and execute CI/CD tests; verify system functionality; collaborate in Agile team; DoD Secret clearance.
Jira, Confluence, GitLab CI/CD, Docker, APIs
1w
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Software Engineer – API and Platform
Greenwood Village, Colorado, United States
$95k-$125k/yr OnsiteFull Time
3+ YOE3+ years' software engineering experience, API ownership, cross-language schema maintenance, testing expertise, AI-assisted development, end-to-end delivery, and a bachelor's degree or equivalent experience.
MCP, OpenAPI, JSON, SQL, SQL Server, Docker, ECS, AKS, Kubernetes, CI/CD, JWT, OIDC, JWKS
3mo
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Mid-Level Test Engineer (TS/SCI with CI Poly Required)
Aurora, Colorado, United States
$80k-$100k/yr OnsiteFull Time
2+ YOE2-5 years software testing, TS/SCI with CI Poly required, automated testing, REST API testing, CI/CD, strong programming in JS/TS.
Cypress, Playwright, Selenium, Jest, Mocha, Postman, REST Assured, Supertest, k6, JMeter, Gatling, Pact, Docker, Kubernetes, Go, Node.js, Python, Cucumber, SpecFlow, AWS
2mo
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Senior Software Engineer (Hogan API)
Hopkins or Atlanta or Chicago or Charlotte or Englewood or Brookfield or Irving
$120k-$141k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent and 5+ years relevant experience. Experience with mainframe/Hogan development (COBOL, JCL, CICS), APIs, system design, testing, security, and cross-team collaboration; Scrum familiarity.
Hogan COBOL, JCL, CICS, JSON, Splunk, IMS Database, GitLab, IDz/RDz (IBM Developer for zOS), Jira
1mo
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R&D Engineer SW Quality 3
Broomfield, Colorado, United States
$91k-$146k/yr OnsiteFull Time
8+ YOEBachelor's in engineering, 8+ years software testing experience, strong automation (Python), Linux/Windows/VMware skills, networking and SAN knowledge, JIRA and REST API experience.
Python, Linux, Windows, VMware, JIRA, REST API, Claude Code, Gemini AI
1w
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Quality Engineer
Denver, Colorado, United States
$85k-$100k/yr HybridFull Time
3+ YOERequires 3+ years in software quality engineering or test automation, automated testing with Cucumber, Selenium, REST APIs, CI/CD integration, programming or scripting, and performance testing experience.
Cucumber, Selenium, Jenkins, Claude Code, GitHub Copilot, Gatling, JMeter, Java, Python, JavaScript, Docker, Kubernetes, AWS, GCP, Microsoft Azure
2w
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Senior Software Engineer - Murex
Philadelphia or Denver or Cedar Rapids
$94k-$115k/yr HybridFull Time
3+ YOEBachelor’s degree or equivalent experience, 3+ years of software engineering, Murex development, enterprise integrations, SQL Server or Oracle, ETL, reporting, APIs, testing, deployment, and financial markets knowledge.
Murex, Murex MxML, SQL Server, Oracle, SSIS, SSRS, AWS Glue, Control-M, Excel VBA, Microsoft Excel, Java, .NET, C#, Python, APIs, OOD, OOP, Spring Framework, J2EE, Swagger/OpenAPI, Kafka, REST APIs, Visual Studio, Git, Bitbucket, Maven, Jenkins, Nexus, SQL Management Studio, NUnit, Docker, OpenShift, Kubernetes, Windows Server, Linux/Unix, Kiro
2mo
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Full Stack Software Engineer
Aurora or Philadelphia
$82k-$172k/yr OnsiteFull Time
5+ YOEBachelor's in CS or related, TS/SCI with Polygraph required, 5+ years OO experience (Python focus), 2+ years JavaScript/TypeScript, SDLC and microservices experience, API development, unit/integration testing, Agile, ability to work onsite full time.
Python, JavaScript, TypeScript, AWS, Azure, Kubernetes, React, Angular, Git, GitLab, Jira, Confluence
5d
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Software Engineer
Colorado Springs, Colorado, United States
$81k-$151k/yr OnsiteFull Time
Requires 8140-compliant certification, U.S. citizenship, ability to obtain an interim Secret clearance, valid U.S. passport, programming experience in Python and Java, scripting, REST APIs, Git, and automation testing.
GitLab, Jenkins, Python, Java, Bash, Powershell, REST API, Git, Docker, Microsoft PowerPoint, Microsoft Visio
1mo
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Software Engineer - Dice
Denver or Des Moines or United States
$100k-$140k/yr HybridFull Time
Production experience with Node.js and TypeScript, RESTful APIs, NextJS/React, AWS, CI/CD and automated testing (Playwright); strong engineering judgment and collaboration skills.
Claude Code, Codex, Gemini CLI, Node.js, TypeScript, RESTful APIs, NextJS, React, AWS, CI/CD, Playwright, GraphQL, Docker, Fargate, Kubernetes
3w
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Senior Software Engineer- Java Developer
Aurora or Denver
$152k-$262k/yr OnsiteFull Time
8+ YOEBachelor's degree or equivalent practical experience, 8+ years of software engineering experience, substantial Java development, active Top Secret clearance, enterprise application, API, database, testing, and Agile experience.
Java, Java SE, Java EE, Spring Boot, Hibernate, RESTful APIs, JUnit, TestNG, Git, Docker, AWS, Azure, Google Cloud, SAFe
1mo
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Automation Engineer
Aurora or Herndon
$113k-$169k/yr OnsiteFull Time
2+ YOE2+ years software testing experience; proficiency with automated testing frameworks, integration and REST API testing, CI/CD integration, Git, strong debugging and communication skills.
Cypress, Git, JavaScript, TypeScript, Playwright, Selenium, Jest, Mocha, Postman, REST, Assured, Supertest, k6, JMeter, Gatling, Pact, Docker, Kubernetes, go, Node.js, Python, AWS, C2S
4mo
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Salesforce Engineer
Denver, Colorado, United States
$120k-$150k/yr HybridFull Time
Experienced Salesforce Engineer with enterprise development focus; strong Apex, Visualforce, LWC/Aura, and integration skills; familiar with REST/SOAP APIs, ETL tools; able to design, develop, test, and deploy Salesforce solutions.
Salesforce, Apex, Visualforce, Lightning Web Components, Aura Components, REST APIs, SOAP APIs, ETL tools, Process Builder, Flow, Workflow Rules, CI/CD, Cursor, Copilot
2mo
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AI Software Developer
Grand Rapids or Denver or Chicago or Massachusetts or New Hampshire or New York or North Carolina or Oregon or Texas or Utah or Vermont or Virginia or United States or Canada
$120k-$160k/yr RemoteFull Time
3+ YOE3+ years professional software development; experience with Claude Code and Anthropic API; strong TypeScript and React; knowledge of prompt engineering, REST APIs, async patterns; ability to review AI-generated code and write tests.
Claude Code, Anthropic API, TypeScript, React, REST APIs
1w
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QA Engineer
Denver or Arvada or United States or San Francisco or Nashville or Santa Fe or New Orleans or San Diego or Bozeman or New York City
$95k-$115k/yr HybridFull Time
2+ YOERequires 2+ years in software quality assurance, manual testing of complex production systems, test planning, defect investigation, web and REST API testing, and familiarity with Git and security clearance preferred.
Rally, Zephyr, TestRail, Xray, Postman, Insomnia, curl, Git
1mo
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Senior Software Engineer — PingOne Platform Administration & Security
Austin or Denver
$110k-$138k/yr OnsiteFull Time
5+ YOE5+ years software engineering; strong backend experience building production services; 3+ years Java; experience with NodeJS and TypeScript desired; REST APIs, cloud-native, CI/CD, automated testing, Agile, mentoring and technical leadership.
Java, NodeJS, TypeScript, MCP server, REST API, CI/CD
1w
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QA Engineer
Denver or Naperville
$85k-$95k/yr OnsiteFull Time
2+ YOERequires 2–3 years of experience, bachelor's degree or equivalent professional experience, and skills in automated testing, Python, JavaScript/TypeScript, SQL Server/PostgreSQL, API testing, performance testing, reporting, and Git.
Playwright, Python, TypeScript, JavaScript, SQL Server, PostgreSQL, REST, GraphQL, k6, HTML, Allure, JUnit, Cypress, Selenium, Git
2mo
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Software Engineer III
Denver, Colorado, United States
$99k-$198k/yr OnsiteFull Time
2+ YOEBachelor's degree in a relevant computing field plus 2 years of software engineering experience, or 4 years of relevant experience; expertise in OOP, API design, cloud, debugging, CI/CD, and testing.
C/C++, Python, Go, JavaScript, AWS, GCP, CI/CD, WCAG 2.2 AA
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