266 senior software testing engineer jobs at 123 companies in Colorado
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Senior Software Engineer
Menlo Park or New York City or Bellevue or Washington or Denver or Westlake or Chicago or Lake Mary or Clearwater or Gainesville
HybridFull Time
5+ YOERequires 5+ years of software engineering experience, strong Python or Go coding skills, distributed systems expertise, and experience with load testing, fault injection, chaos engineering, or developer infrastructure.
Python, Go, Kubernetes, CI/CD
1mo
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Senior Software Engineer
Denver, Colorado, United States
$120k-$150k/yr HybridFull Time
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
3w
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Senior Software Engineer
Chicago or Peoria or Irving or Dallas or Denver
$113k-$183k/yr OnsiteFull Time
Proven Java/Spring Boot software engineering experience, cloud deployment (AWS/Azure), SQL/ORM, CI/CD and automated testing, microservices, containerization, and mentoring experience; bachelor's degree preferred.
Java, Spring Boot, Hibernate, JPA, Spring Data, SQL, Snowflake, Playwright, Docker, Kubernetes, React, Angular, AWS, Azure
2mo
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Senior Software Engineer
Boulder or Austin
$140k-$185k/yr HybridFull Time
Atom Computing: Building scalable quantum computers using arrays of neutral atoms.
5+ YOEBachelor's degree in CS/CE or related, 5+ years software engineering experience, proficiency with Python and SQL, Linux and Git experience, familiarity with automated testing and CI/CD practices, willingness to learn atomic/quantum concepts.
Python, Rust, TypeScript, React, SQL, Linux, Git, Terraform, Azure, AWS, GCP, C++
1mo
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Senior Software Engineer
Denver or United States
$120k-$160k/yr HybridFull Time
Experience building production-grade applications with Node.js and TypeScript, REST/GraphQL services, React/Next.js, AWS and container deployments; automated testing and AI-native workflows; senior technical leadership and mentoring.
Node.js, TypeScript, RESTful, GraphQL, React, Next.js, AWS, Docker, Fargate, Kubernetes, Playwright, LiteLLM, Python, Java, PostgreSQL, SNS, SQS, Lambda
3w
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Senior Software Engineer
Loveland, Colorado, United States
$125k-$145k/yr OnsiteFull Time
5+ YOE5+ years software development experience, strong C++ and embedded Linux skills, DevOps with Docker and GitLab CI, AWS/Azure experience, automated testing, bachelor's degree or equivalent preferred.
C++, Embedded Linux, Docker, GitLab CI, AWS, Azure, Qt, Yocto, LIMS, Electronic Health Records (EHR)
1w
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Senior Software Engineer - Metadata
Denver or Ontario
$140k-$168k/yr RemoteFull Time
5+ YOE5+ years in software engineering, backend service and distributed systems experience, proficiency in a backend or systems language, cloud and containerization experience, and experience with testing, design, troubleshooting, and code review.
Python, Rust, GraphQL, Postgres, Snowflake, Kafka, Kubernetes, Docker, AWS, GCP, Datadog, Java, C++, C#, Azure, BuildKite, Grafana, GitHub Copilot, Claude Code, ChatGPT
1w
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Senior Software Engineer
Portland or North Dakota or Montana or Maine or Ohio or Nebraska or Phoenix or Louisiana or Texas or Nevada or Georgia or Tampa or Mississippi or Colorado or Denver or Wyoming or Wisconsin or West Virginia or Vermont or Richardson or Arkansas or Dallas or South Dakota or Pennsylvania or Michigan or Indiana or Idaho or Arizona or Plano or New Mexico or New Hampshire or Kentucky or Alabama or Philadelphia or South Carolina or Austin or Illinois or Atlanta or Missouri or Iowa or Tennessee or Boulder or North Carolina or Minnesota or Kansas or Houston or Alaska or Chicago or Rhode Island or Washington or Virginia or Utah or Oregon or Florida or Miami or Oklahoma
$139k-$204k/yr RemoteFull Time
5+ YOEBachelor's degree with 5+ years, master's with 3+ years, or PhD with 1+ year; production software development, testing, troubleshooting, code reviews, technical design, scalability, reliability, and security experience.
AI/ML, generative AI, LLMs, AI agents
1d
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Senior Software Engineer - Fullstack
Westminster, Colorado, United States
$133k-$161k/yr OnsiteFull Time
5+ YOEBachelor's degree and 5+ years of software engineering experience required. Requires distributed systems, microservices, cloud, database, testing, and space mission integration expertise; U.S. citizenship and ability to obtain Secret clearance.
Distributed Ledger Technology (DLT), C++, C#, Rust, Python, Go, SQL, NoSQL, AWS, Microsoft Azure, GitHub, Jira, Confluence, React, Vue, Svelte, Blazor
1w
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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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Senior Software Engineer, Golang
Minneapolis or Charlotte or Denver
$119k-$150k/yr HybridFull Time
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
1mo
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Senior Software Engineer
United States or Arizona or California or Colorado or District of Columbia or Florida or Georgia or Iowa or Illinois or Massachusetts or Maryland or Michigan or Minnesota or Montana or Nebraska or North Carolina or New Hampshire or New Jersey or Nevada or New York or Ohio or Oregon or Pennsylvania or Rhode Island or Tennessee or Texas or Utah or Washington
$170k-$195k/yr RemoteFull Time
4+ YOE4+ years software engineering experience; strong Node.js and/or Go; familiarity with Vue.js, relational DBs, Redis, queue systems, Terraform/CloudFormation, testing, observability, and production ownership.
Node.js, Go, Vue.js, AWS, SQS, Lambda, Postgres, MySQL, SQL Server, Redis, Kafka, Kinesis, Terraform, CloudFormation
1w
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Software Engineer Senior Staff
Littleton or Huntsville
$167k-$310k/yr OnsiteFull Time
Experience with C or C++, embedded software or hardware, software development lifecycle, and unit testing. U.S. citizenship and government security clearance required; bachelor's degree preferred.
C, C++, Agile Software Development, Model Based Systems Engineering (MBSE)
3w
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Senior Software Engineer (Contract)
United States or Arlington or Denver or Merritt Island
RemoteContract
9+ YOEBachelor's in STEM, 9 years' related experience (7 with Master's), US citizenship, ability to obtain government clearance, proficiency in C/C++, embedded software and flight software development/testing, GNC and HIL experience.
C/C++, Hardware in the Loop (HIL)
2mo
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Senior Software Engineer, Assurance
United States or California or New York or Washington or Colorado
$172k-$224k/yr RemoteFull Time
6+ YOE6+ years software engineering/SDET experience; hands-on with agentic model harnesses, test automation (Playwright/Appium/Cypress), GitLab CI/CD; skilled in Ruby, JavaScript, Shell/Bash, Python; strong communication and cross-functional collaboration.
Claude, Microsoft Visual Studio Code, GitLab, GitLab CI/CD, Datadog, Slack, Playwright, Appium, Cypress, Ruby, JavaScript, Shell, Bash, Python, AWS, Terraform
2mo
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Senior Software Engineer
United States or Connecticut or South Carolina or Pennsylvania or New Hampshire or Hawaii or California or Alaska or Washington or Oregon or Texas or Alabama or Mississippi or Tennessee or Illinois or Wisconsin or Louisiana or Arkansas or Missouri or Iowa or Minnesota or Oklahoma or Kansas or Nebraska or South Dakota or North Dakota or Colorado or Wyoming or Idaho or Montana or Utah or Vermont or North Carolina or Massachusetts or Georgia or Rhode Island or New York or Maryland or Delaware or Virginia or Ohio or New Jersey or Maine
$148k-$185k/yr RemoteFull Time
Worksoft: Automation platform for enterprise business process testing and discovery.
10+ YOEBachelor's in CS/Engineering or 15+ years related experience; 10+ years Windows OO development; strong C#/.NET skills; WinForms/WPF experience; problem-solving, troubleshooting, and customer-facing communication skills; familiarity with CI/CD and test automation preferred.
C#, .NET, .NET Framework, VB.NET, C++, Win32, WinForms, WPF, SQL, Web Services, WCF, COM, SAML, OAuth, Machine Learning, Deep Learning, OCR, Image Processing, SAP GUI, WebExtensions, Java, Oracle Forms, Mainframe, Acrobat, Email, UIA, MSAA, Applitools, SoapUI, Postman, Perfecto, Microsoft Office, Silverlight, macOS, Cocoa, Swift, Xcode, Mono, Xamarin, MAUI, Jenkins, Groovy, Bash, Z Shell, Batch, PowerShell, NANT, MSBuild, Git
1mo
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Senior Software Engineer- Full Stack
Centennial, Colorado, United States
$111k-$160k/yr HybridFull Time
7+ YOE7+ years full-stack software engineering experience with Java/Spring Boot, React/TypeScript, deep SQL Server expertise, testing discipline, and legacy-system migration experience.
Java, Spring Boot, pnpm, React, TypeScript, Vite, MUI, TanStack Query, Zod, ColdFusion, Docker, GitLab CI, AWS, S3, DynamoDB, KMS, Kubernetes, JUnit, WireMock, Vitest, Playwright, Selenium, SQL Server, Flyway, OpenAPI, RabbitMQ, Kafka
1w
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Senior Software Engineer (Modern .NET)
Denver or Kansas City or Chicago or Cincinnati or St. Louis or Florida or Iowa or Nebraska or Tennessee
$120k-$160k/yr RemoteFull Time
6+ YOERequires 6+ years of software engineering experience, C#/.NET and ASP.NET Core, REST APIs, relational databases, SQL Server, EF Core, testing, cloud deployment, CI/CD, and Git workflows.
C#, .NET, ASP.NET Core, EF Core, SQL Server, Azure, React, TypeScript, REST APIs, CI/CD, Git, Angular, Vue, Figma, Terraform, Bicep, Culture Index, Microsoft Windows
3d
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Senior Software Engineer - OMS
Fort Worth or Palmdale or Atlanta or Denver or Huntsville
$120k-$160k/yr OnsiteFull Time
5+ YOEBachelor's degree in STEM, 5+ years of C++ development, OMS architecture, Linux mission software, DDS, service-oriented design, ICDs, data modeling, simulation, testing, Secret clearance, and 10% travel.
C++, Linux, DDS, Atlassian Tools, Confluence, JIRA, Bitbucket, Java, MOSA, FACE, CI/CD, EAP
2mo
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Senior Software Engineer (Full-Stack)
Denver, Colorado, United States
$160k-$210k/yr OnsiteFull Time
5+ YOE5+ years software engineering experience with frontend depth; strong React and TypeScript skills; experience with canvas/2D rendering, WebRTC, data visualization; backend fluency in Python/Django, GraphQL, and PostgreSQL; AWS and container experience; testing and observability; participate in on-call rotations.
React, TypeScript, Django, Python, GraphQL, PostgreSQL, WebRTC, Storybook, AWS, WebSocket
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