4,302 senior developer jobs at 1,131 companies in Thornton, CO

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Senior Application Developer
Aurora, Colorado, United States
$85k-$95k/yr HybridFull Time
University of Colorado
University of Colorado: Public research university providing higher education and healthcare services.
2+ YOESenior developer for identity and access management; design, develop, and support secure, multi‑system web apps with identity/authentication integrations.
ASP.NET, NodeJS, MVC, TypeScript, Angular, Vue, React, MySQL, Oracle, MSSQL Server, Java, Python, Ruby, C#
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Senior Software Engineer
Littleton, Colorado, United States
$120k-$150k/yr OnsiteFull Time
OASYS
OASYS: Provides technology services and products for government and defense.
Full-time Senior Software Engineer with C/C++ experience; US citizen; security clearance required.
C, C++
2mo
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Senior Software Engineer
Denver or Salem
$130k-$150k/yr OnsiteFull Time
AutoStore
AutoStoreOslo Stock Exchange: AUTO: Robotic cube storage systems for automated warehouse fulfillment.
5+ YOE5+ years in software development; Bachelor’s or Master’s in CS/Engineering; strong API, security, and data tooling experience.
Git, OpenAPI, OAuth, RabbitMQ, Apache Kafka, Azure Service Bus, Event Hubs, Azure Databricks, TypeScript, C#, F#, PostgreSQL
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Senior Software Engineer
Denver, Colorado, United States
$143k-$183k/yr HybridFull Time
DAT Freight & Analytics
DAT Freight & Analytics: Software platform for freight matching and logistics data analytics.
5+ YOE5+ years of software development; strong Node.js; AWS; Kubernetes; Datadog; microservices; relational and NoSQL databases; Bachelor's degree in CS or related field.
Node.js, Docker, Kubernetes, AWS, Datadog, Angular, React, Web Components, Kafka, SQL, NoSQL
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Senior DevTools Engineer
San Francisco or Boston or New York or Denver
$163k-$247k/yr HybridFull Time
Semgrep
Semgrep: Provides a code security platform for developers and security teams.
5+ YOE5+ years software engineering; experience in developer tooling, software/infrastructure engineering; cloud infrastructure design and deployment; Python and TypeScript proficiency; security-aware mindset.
Python, TypeScript, AWS, GCP, Cloud infrastructure, Developer tooling
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Senior Software Engineer
Denver, Colorado, United States
$155k-$195k/yr OnsiteFull Time
Performance Drone Works
Performance Drone Works: Manufacturer of autonomous, tactical unmanned aerial systems for defense.
6+ YOE5–8 years of professional software development; strong C++, performance optimization; experience with embedded systems, Qt UI, REST/JSON, Agile/CI/CD.
C++, Qt, QtWidgets, QML, REST, JSON, Git, CMake, QMake
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Senior Security Engineer
Austin or Chicago or Dallas or Denver or Los Angeles or San Diego or San Francisco
$131k-$169k/yr HybridFull Time
Karbon
Karbon: Practice management software for accounting firms.
4+ YOESenior Security Engineer with 4+ years in security or development; strong communication; cloud and AI experience; hands-on with security tooling and threat modelling.
DotnetCSharp, JavaScript, React, EmberJS, Python, Azure, AWS, GCP, PowerShell, Bash, GitHub Copilot, Burp Suite
3mo
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Senior AI Platform Engineer
Boulder or United States
$175k-$215k/yr HybridFull Time
Campminder
Campminder: Cloud-based management software for the summer camp industry.
Senior AI Platform Engineer to build AI enablement tools, collaborate with executives and product, and drive AI tooling and observability across Campminder.
RAG, prompt engineering, context engineering, LLM evals, Claude Code, Cursor, MCPs, custom agents, skills/plugins, agentic coding tools
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Senior Java Engineer - Cloud Platform
Denver, Colorado, United States
$170k-$200k/yr HybridFull Time
FusionAuth
FusionAuth: Provides authentication and user management software for developers.
10+ YOE10+ years software development; 6+ years in ops/platform; strong Java; AWS; Kubernetes; Terraform; Linux; SQL; cloud and backend architecture.
Java, AWS, Kubernetes, Terraform, Linux, SQL, Git
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Senior Embedded Software Engineer
Berthoud, Colorado, United States
$125k-$155k/yr OnsiteFull Time
Ursa Major
Ursa Major: Designs and manufactures rocket engines and aerospace propulsion systems.
4+ YOEDesign, develop, and maintain embedded software for avionics; strong C/C++ on ARM/SoC/FPGA; hardware interface, debugging tools; Git; team collaboration.
C/C++, ARM, SoC, FPGA, HDL, Git, Oscilloscope, Logic Analyzer, Python, MATLAB
3mo
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Senior Software Engineer
Denver, Colorado, United States
$100k-$144k/yr RemoteFull Time
Resource Innovations
Resource Innovations: Provides clean energy services and software solutions for utilities.
10+ YOEExpert PHP 8.x with 10+ years in PHP frameworks (e.g., Laravel); strong RESTful APIs, Vue.js (6+ years), TypeScript; SPA design; AWS/serverless; Git; Agile; testable code with Pest/PHPUnit.
PHP, Laravel, Vue.js, TypeScript, Git, AWS, New Relic, CloudWatch, Pest, PHPUnit, NPM, Vite, Tailwind CSS
3w
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Senior Software Engineer
Denver, Colorado, United States
$130k-$150k/yr HybridFull Time
OrthoFi
OrthoFi: Software for orthodontic practice operations and patient financing.
10+ YOE10+ years software development experience, 4+ years in senior roles. Strong .NET Core/.NET Framework, React/Angular, SQL Server, AWS, CI/CD experience; Bachelor's in STEM required; experience with AI coding tools preferred.
.NET Core, .NET Framework, React, Angular, SQL Server, AWS, CI/CD, Terraform, Datadog, GraphQL, ElasticSearch, Claude, GitHub Copilot, Cursor, Playwright, Model Context Protocols (MCP)
1mo
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Senior Java Developer
Denver or Colorado Springs
OnsiteFull Time
Blue Rose Consulting Group
Blue Rose Consulting Group: Provides IT and management consulting services to government agencies.
8+ YOE8+ years Java development experience with Spring Boot, Hibernate, Struts2/J2EE; experience with cloud (AWS/Azure), CI/CD, unit testing, and secure application development. Active Secret clearance and U.S. citizenship required.
Spring Boot, Hibernate, Struts 2, J2EE, AWS, Azure, Oracle, SQL Server, JUnit, SAML, SAFe, CI/CD, DevSecOps, Login.gov
2mo
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Senior Engineer
Houston or Wheat Ridge
$125k-$161k/yr RemoteFull Time
Terracon
Terracon: Provides geotechnical, environmental, construction, and facilities engineering services.
8+ YOEBachelor's degree in civil engineering; 8-11 years experience; PE; DOT transportation experience; valid driver's license. Preferred: Master's in Geotechnical Engineering; 10+ years.
Finite Element Software, Geotechnical Software
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Senior Engineer
Denver or Thornton
OnsiteFull Time
Murphy Company
Murphy Company: Mechanical contractor focused on design-build mechanical systems and projects in Denver and surrounding markets.
10+ YOETen+ years mechanical/plumbing engineering; design-build experience; leadership ability; strong technical knowledge in HVAC, piping, energy modeling; P.E. licensure; BS in Mechanical Engineering.
REVIT, AutoCAD, Bluebeam, Trane Trace 700/3D, Energy Modeling
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Senior Software Engineer (Tech Lead), Customer Domain Engineering
San Francisco or Denver or New York City
$209k-$240k/yr HybridFull Time
Forge Global
Forge GlobalNYSE: FRGE: Marketplace for trading private shares and pre-IPO stock.
8+ YOE8+ years of software engineering experience; API development with C#/.NET; event-driven systems; CQRS/Event Sourcing; strong SQL; fintech experience preferred; team leadership experience.
C#, .NET, Kafka, RabbitMQ, SQL
1w
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Senior ServiceNOW Developer
Lakewood or Phoenix or Folsom or Billings
$135k-$155k/yr OnsiteFull Time
KeyLogic
KeyLogic: Provides technology and mission management solutions to government agencies.
US citizen with bachelor’s in CS/IT/engineering, ServiceNow development experience, JavaScript and integration skills, ability to obtain Public Trust, strong communication and problem-solving.
ServiceNow, JavaScript, Flow Designer, IntegrationHub, REST, SOAP, MID Server, OAuth, JWT, Now Assist, ServiceNow SDK
2mo
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Senior Software Engineer, Growth & Platform
Denver, Colorado, United States
$184k-$223k/yr HybridFull Time
Cubby Beds
Cubby Beds: Manufactures smart sensory beds for children with special needs.
5+ YOE5-10 years shipping production systems; experience integrating multiple SaaS/data flows in regulated environments; strong data pipelines and warehouse skills (SQL, Python, dbt, ELT); frontend and backend capabilities; AI tooling expertise; based in or willing to relocate to Denver.
SQL, Python, dbt, ELT, TypeScript, React, GitHub, CI/CD
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Senior Software Engineer - Synthetics Platform
Boston or Denver or New York or Remote
$130k-$300k/yr HybridFull Time
Datadog
DatadogNASDAQ: DDOG: Observability and security platform for cloud applications and infrastructure.
5+ YOE5+ years in software engineering; programming in Go or Python; production cloud experience; distributed compute/storage tools (Kubernetes, Cassandra, Postgres, Kafka, Redis); automation with infrastructure as code.
Go, Python, Kubernetes, Cassandra, Postgres, Kafka, Redis, Terraform, Temporal, Bazel
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Application Developer, Senior
Washington or Orlando or Fort Meade or Minneapolis or Huntsville or Dayton or San Diego or Fort Sheridan or Devens or Norfolk or Millington or Phoenix or Fort Worth or Peterson AFB or Buckley AFB or Belle Chasse or Fort Leavenworth or MacDill AFB or San Antonio or Tampa or Quantico or Lackland AFB or Yorktown or Offutt AFB or Rome or Reston or Camp Parks
$87k-$198k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
6+ YOE6+ years in application or software development; Node.js with Typescript, SQL/PostgreSQL, Redis, Elasticsearch; cross-functional collaboration; automated testing; TS/SCI with polygraph; Bachelor’s degree.
Node.js, Typescript, SQL, PostgreSQL, Redis, Elasticsearch