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171 rest api jobs at 102 companies in Commerce City, CO

2w
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API Developer
Pittsburgh or Cleveland or Dallas or Birmingham or Phoenix or Denver
OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
8+ YOE8+ years Java/J2EE experience building RESTful APIs using Spring Boot and microservices; experience with DevOps, Kafka, IBM MQ, SQL/NoSQL and cloud platforms required.
Java, J2EE, Spring Boot, Microservices, REST API, Angular, XML, JSON, Swagger, Jenkins, uDeploy, GIT, Kafka, IBM MQ, SQL, No Sql, AWS, Azure, GitHub, CI/CD, React, JavaScript, HTML, CSS, JSON Web Token (JWT), UML, XPath
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6d
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API Engineer
Boulder, Colorado, United States
$80k-$110k/yr HybridFull Time
Lynker
Lynker: Provides scientific and technical services for environmental and climate data.
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
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1mo
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API Integrations Developer
Denver, Colorado, United States
$119k-$133k/yr HybridFull Time
Colorado Access
Colorado Access: Provides managed care and health insurance for Medicaid members.
4+ YOEBachelor's in CS or related required; 4+ years backend experience (Python, Node.js, Java, or .NET); HL7 FHIR and X12 EDI experience; strong REST API, security (OAuth2, JWT, mTLS), SQL, and HIPAA knowledge; experience with cloud and CI/CD.
Python, Flask, FastAPI, Django, Node.js, Java, .NET, OpenAPI/Swagger, Postman, X12 EDI, HL7 FHIR, HL7 v2, CDA, EHRs, Docker, Kubernetes, GitHub Actions, Azure DevOps, Jenkins, ELK, Datadog, Prometheus, Grafana, AWS, Azure, GCP, SQL Server, Snowflake, Data Vault 2.0, pytest, JUnit, Pact, k6, Locust, OAuth2, JWT, mTLS, RBAC/ABAC, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Microsoft SharePoint
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2d
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Software Engineer - C#/Angular/API
Pittsburgh or Denver or Birmingham or Farmers Branch or Cleveland or Phoenix or Strongsville
$75k-$138k/yr OnsiteFull Time
PNC Financial Services
PNC Financial ServicesNYSE: PNC: Provides banking, lending, and investment services to customers.
3+ YOERequires a bachelor's degree or equivalent experience and 3+ years of enterprise software development experience with C#, .NET, Angular, REST APIs, SQL Server, T-SQL, and Agile methodologies.
C#, .NET, ASP.NET Core, Angular, Entity Framework Core, SQL Server, RESTful APIs, T-SQL, Microsoft Copilot, ChatGPT, Claude, CI/CD, DevOps, Scrum
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2w
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Full-Stack Developer
Broomfield, Colorado, United States
HybridFull Time
Sonepar
Sonepar: Global distributor of electrical products and B2B solutions.
4+ YOEBachelor's in Computer Science or related, 4+ years full-stack development, proficiency with .NET, C#, ASP.NET MVC, REST/APIs, JavaScript/TypeScript, and Microsoft SQL Server.
.NET, .NET Framework, ASP.NET, MVC, C#, Microsoft Visual Studio, Microsoft SQL Server, XML, JSON, TypeScript, JavaScript, jQuery, HTML, CSS, REST, Web API
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1mo
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Ivalua Technical Lead
Houston or Milwaukee or Dallas or Columbus or Cincinnati or New York City or Austin or Cleveland or Oklahoma City or Albany or Chicago or St. Petersburg or Hartford or St. Louis or Sacramento or Raleigh or Minneapolis or Mountain View or Denver or Boston or Philadelphia or Des Moines or Overland Park or Walnut Creek or Charlotte or Seattle or Carmel or Atlanta or Arlington or Bentonville or Nashville
$63k-$219k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
5+ YOE5+ Mgmt5+ years leading Ivalua technical implementation teams, 3+ years building REST/SOAP API integrations, Ivalua certified, knowledge of SAP/PeopleSoft/Deltek, bachelor’s degree or equivalent.
Ivalua, REST, SOAP, SAP, PeopleSoft, Deltek, API
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1mo
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Software Integration Engineer
Warrenton or Fort Eisenhower or Centennial or Augusta
$150k-$200k/yr OnsiteSeasonal
Altamira Technologies
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
8+ YOEU.S. citizen with active TS/SCI, Bachelor's in CS/IS/Software Engineering, minimum 8 years relevant experience, end-to-end API/integration ownership, experience with REST/SOAP/GraphQL and Kafka/Azure Service Bus/SQS.
APIs, REST, SOAP, GraphQL, Kafka, Azure Service Bus, SQS
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3d
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Lead Integration Engineer
Littleton, Colorado, United States
$110k-$157k/yr OnsiteFull Time
EchoStar
EchoStarNasdaq: SATS: Global provider of satellite solutions and wireless communications services.
8+ YOEBachelor's in CS/IT,8 years enterprise systems integration/API management,5+ years in API governance, Dynatrace, vendor integrations, and REST/GraphQL; knowledge of MCP and agentic A2A standards.
Dynatrace, REST, GraphQL, Model Context Protocol (MCP)
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2mo
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Senior C#/.Net Developer
Lone Tree, Colorado, United States
$150k-$170k/yr OnsiteFull Time
Charles Schwab
Charles SchwabNYSE: SCHW: Financial services, brokerage, and investment management provider.
7+ YOE7+ years in software development with .NET, C#, DDD, REST APIs, SQL Server, CI/CD, and leadership.
.NET, C#, ASP.NET, REST API, SQL Server, GitHub, CI/CD, IIS, Windows Services, DDD, SOLID, Unit Testing, Integration Testing
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4w
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Automation Engineer
Aurora or Herndon
$113k-$169k/yr OnsiteFull Time
Two Six Technologies
Two Six Technologies: Develops cybersecurity and data systems for national security missions.
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
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1w
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Senior Software Engineer
Denver, Colorado, United States
$185k-$225k/yr OnsiteFull Time
Amatriot Group
Amatriot Group: Provides IT consulting and mission-critical technology support services.
Experience with full-stack development, microservices, cloud, containers, Kubernetes, REST APIs, modern web frameworks, CI/CD tools, and TS/SCI clearance with CI polygraph.
REST, AWS, GCP, Azure, Kubernetes, Docker, Node.js, NPM, Linux, Subversion, Git, JIRA, Confluence, HTML5, CSS, SASS, Less, Stylus, Browserify, WebPack, Closure, Angular, Ember, React, Redux, Reactive, VueJS, SVG, HTML5 Canvas, WebGL, WebSockets, Svelte, Cesium, OpenLayers, Spring
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3w
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Network Automation Engineer II
Dublin or Fremont or Denver
$73k-$115k/yr OnsiteFull Time
Astreya
Astreya: Provides managed IT services and digital workplace solutions for enterprises.
3+ YOE3+ years in automation/data/DevOps, strong Python, API (REST/GraphQL) experience, SQL and ETL familiarity, job orchestration experience, data quality and large-dataset handling.
Python, PHP, Hack, Bash, GraphQL, REST, Thrift, SQL, Hive, Presto, Airflow, cron
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1d
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TypeScript Developer
Boulder, Colorado, United States
$80k-$110k/yr RemoteFull Time
Lynker
Lynker: Science and technology solutions for government and environmental agencies.
Requires strong TypeScript and modern framework skills, interactive web interface experience, REST/JSON API integration, Git, web tooling, and a relevant degree or equivalent hands-on experience.
TypeScript, React, REST, JSON, Git, MapLibre GL, Leaflet, deck.gl, PMTiles, GeoJSON, Learning Management System (LMS), Employee Assistance Program (EAP)
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2w
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R&D Engineer SW Quality 3
Broomfield, Colorado, United States
$91k-$146k/yr OnsiteFull Time
Broadcom
BroadcomNASDAQ: AVGO: Designs and sells semiconductors and infrastructure software to enterprises.
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
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1mo
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Product Owner - Kiosk Software & Hardware Platform
Louisville, Colorado, United States
OnsiteFull Time
Kiosk Information Systems
Kiosk Information Systems: Designs and manufactures custom self-service kiosks and automation software.
5+ YOE5+ years product owner/business analyst/project management experience in software; experience with Azure DevOps, REST API integrations, Figma; strong communication and stakeholder management skills.
Azure DevOps, REST API, Figma
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2w
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Fullstack Engineer
Boulder, Colorado, United States
$95k-$115k/yr HybridFull Time
Yes Energy
Yes Energy: Provides real-time electric power market data and trading analytics.
3+ YOE3+ years software engineering experience, strong C#/.NET and SQL Server skills, REST API and distributed services experience, working knowledge of JavaScript, SDLC experience, debugging and problem-solving.
C#/.NET, REST, SQL Server, JavaScript
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1mo
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Backend Engineer - Mission Operations Services
Golden or San Francisco or Toulouse
$140k-$190k/yr OnsiteFull Time
Loft Orbital
Loft Orbital: Deploy and operate satellite missions for organizations and governments.
Production Python experience, Docker, backend web frameworks (Django/Flask/FastAPI), API design (HTTP/GraphQL/REST), and strong backend engineering for mission-critical systems; familiarity with databases and observability.
Python, Docker, Django, Flask, FastAPI, GraphQL, HTTP, REST, Postgres, Kubernetes, InfluxDB, TimescaleDB
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1mo
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Federal Support Engineer 3
Denver, Colorado, United States
$92k-$134k/yr HybridFull Time
Datadog
DatadogNASDAQ: DDOG: Observability and security platform for cloud applications and infrastructure.
5+ YOE5+ years delivering technical support in SaaS for regulated public‑sector customers; hands-on with APIs/REST, networking, distributed systems, cloud technologies; strong communication, mentoring, and on-call availability.
APIs, RESTful
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3w
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Software Developer Technical Lead
Centennial, Colorado, United States
$100k-$120k/yr OnsiteFull Time
Axos Financial
Axos FinancialNYSE: AX: Provides digital-first banking and diverse financial services to customers.
5+ YOE1+ MgmtBachelor's in CS or related,5+ years full-stack .NET development,1+ year leading technical resources,experience with Angular/React,REST/SOAP,APIs,Agile,strong OOP and communication skills.
.NET framework, C#, Java, JavaScript, MVC, Angular 10, React, TypeScript, jQuery, SQL Server, RabbitMQ, Swagger Docs, REST, SOAP, AWS
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3mo
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Software Engineer Lead
Denver or United States
$100k-$135k/yr RemoteFull Time
Resource Innovations
Resource Innovations: Provides clean energy services and software solutions for utilities.
6+ YOEHands-on PHP 8.x with Laravel, Vue.js, REST APIs, TS; 6+ years PHP; 4+ years Vue; Git; Agile; SaaS; AWS/serverless; tests Pest/PHPUnit preferred.
PHP, Laravel, Vue.js, Tailwind CSS, REST API, Git, Pest, PHPUnit, NPM, Vite
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