HiringCafe
Join our community

688 api developer jobs at 339 companies in Colorado

1mo
Save
Mark Applied
Hide
API Developer
Pittsburgh or Cleveland or Dallas or Birmingham or Phoenix or Denver
OnsiteFull Time
CGI
CGITSX: GIB.A: Global IT consulting and business services firm.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
API Engineer
Boulder, Colorado, United States
$80k-$110k/yr HybridFull Time
Lynker Corporation
Lynker Corporation: Employee-owned science, engineering, and technology services firm supporting government, community, and industry missions.
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
Job PostingView all
1w
Save
Mark Applied
Hide
Software Engineer – API and Platform
Greenwood Village, Colorado, United States
$95k-$125k/yr OnsiteFull Time
East Daley Analytics
East Daley Analytics: Private U.S. energy intelligence and consulting serving oil-and-gas investors with asset-level market data and analysis.
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
Job PostingView all
2mo
Save
Mark Applied
Hide
Senior Software Engineer (Hogan API)
Hopkins or Atlanta or Chicago or Charlotte or Englewood or Brookfield or Irving
$120k-$141k/yr HybridFull Time
U.S. Bank
U.S. BankNew York Stock Exchange: USB: Diversified financial services and banking institution.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
Software Engineer Lead - Full Stack Java, API
Pittsburgh or Denver or Farmers Branch
$86k-$158k/yr OnsiteFull Time
PNC Financial Services Group
PNC Financial Services GroupNYSE: PNC: Diversified financial services providing banking and investment solutions.
3+ YOERequires 3+ years developing enterprise Java applications, Spring and microservices experience, API/REST development, JavaScript/Angular front-end work, Oracle familiarity, and leadership/mentoring skills.
Java, JavaScript, Spring, Microservices, RESTful APIs, Angular, Oracle, Agile
Job PostingView all
1mo
Save
Mark Applied
Hide
Director, eCommerce Syndicated API Platforms
Stamford or St. Louis or Greenwood Village
HybridFull Time
Charter Communications
Charter CommunicationsNASDAQ: CHTR: Leading broadband connectivity and cable operator.
10+ YOE3+ MgmtBachelor's degree or equivalent,10+ years in technical program delivery or API platforms,9+ years partner enablement,API strategy and integrations,leadership in launch planning and stakeholder alignment,strong API and developer experience skills.
REST APIs, API gateway, cloud-based platforms
Job PostingView all
2mo
Save
Mark Applied
Hide
Senior Software Engineer – API & Cloud Integrations (Java, AWS)
Denver or Cedar Rapids or Philadelphia
$94k-$120k/yr HybridFull Time
Transamerica
Transamerica: Insurance, retirement, and investment solutions provider.
3+ YOEBachelor’s or equivalent experience; 3+ years Core Java; experience with Spring, microservices, APIs, databases (RDBMS/NoSQL), cloud (AWS/Azure), CI/CD, and integration frameworks; strong analytical and communication skills.
Java, Core Java, Spring Framework, Spring Boot, Spring MVC, J2EE, Entity Framework, IIS, Swagger, Swagger API, OData, .NET API 2, .NET API Core, AutoMapper, MS Cosmos DB, Microsoft Cosmos DB, Apache Cassandra, Amazon DynamoDB, AWS, Azure, EC2, ECS, S3, Kinesis, Microsoft VMs, Microsoft Blob, Microsoft Data Factory, Microsoft SQL Data Warehouse, Microsoft ARM Templates, Microsoft Event Hubs, Visual Studio, Git, Bitbucket, Maven, Jenkins, Nexus, SQL Management Studio, NUnit, Ajax, MS HPC, SageMaker, Spark, API Gateways, Apache Camel, Zookeeper, Kafka, Docker, OpenShift, Kubernetes, Angular, React, Vue.js, ASP.NET MVC, HTML, JS, CSS
Job PostingView all
1w
Save
Mark Applied
Hide
Sr. Software Engineer II, Platform/API
Chicago or California or Colorado or Florida or Georgia or Illinois or Indiana or Minnesota or Missouri or Montana or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or South Carolina or Texas or Utah or Vermont or Virginia or Washington or Wisconsin or country_code
$140k-$190k/yr HybridFull Time
NinjaTrader
NinjaTrader: Privately held futures trading platform and brokerage serving retail and professional futures traders.
6+ YOE6+ years building and operating backend services; Node.js, TypeScript, SQL, Docker, Kubernetes, cloud, event-driven architecture, and workflow reliability expertise. Bachelor's or master's degree or equivalent experience.
Node.js, TypeScript, Kafka, Google Cloud Pub/Sub, SQL, Docker, Kubernetes, Google Cloud Platform, Codex, Cursor, Claude Code, Statsig
Job PostingView all
6d
Save
Mark Applied
Hide
Senior Engineer
Denver, Colorado, United States
$100k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesBSE: 532540: Global leader in IT services, consulting, and business solutions.
8+ YOEBachelor’s degree required; 8–10 years of experience in AI development, prompt engineering, Python, agent frameworks, and REST API access.
Python, LangChain, Microsoft, REST API
Job PostingView all
4d
Save
Mark Applied
Hide
Process Automation Developer
Lincoln or Brownsville or Centennial or Madison
$65k-$75k/yr HybridFull Time
Nelnet
NelnetNew York Stock Exchange: NNI: Public diversified holding providing student-loan servicing, education technology, payment processing, government services, and consumer lending.
1+ YOERequires 1+ year Python development and data environment experience, U.S. citizenship, ability to obtain 6C clearance, and proficiency with automation, APIs, databases, testing, and agile development.
Python, SQL, Microsoft Office, Kanban, APIs, databases
Job PostingView all
1mo
Save
Mark Applied
Hide
(Remote) Software Developer
Blair or British Columbia or Manitoba or Ontario or Alberta or Saskatchewan or Wisconsin or Arizona or Nebraska or Utah or Texas or Minnesota or Tennessee or South Dakota or Kansas or Iowa or Illinois or North Dakota or Missouri or Colorado
$40k-$65k/yr RemoteFull Time
Harris Computer
Harris Computer: Global provider of mission-critical vertical market software solutions.
Proven software development experience with MSSQL, REST API, C#, .NET Core, and Angular; associates degree in CS/Engineering; valid passport and ability to travel ~10%; strong communication and problem‑solving.
MSSQL, REST API, C#, .NET Core, Angular, Typescript, HTML, CSS, Azure, AWS, GitHub
Job PostingView all
5d
Save
Mark Applied
Hide
Mulesoft Developer
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States
$54k-$196k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
3+ YOERequires 3+ years software development, 2+ years API development and Git/Agile/testing, 1+ year MuleSoft development, MuleSoft Developer Level 1, and a bachelor's degree or equivalent experience.
Anypoint Platform, Anypoint Studio, Mule Runtime, DataWeave, MUnit, Git, SOAP, REST, XML, JSON, YAML, Anypoint MQ, API Manager, Anypoint Exchange, CloudHub, Salesforce, SAP, Workday, Oracle Cloud Applications, ServiceNow, CI/CD, AWS, Azure, Flex Gateway, Model Context Protocol (MCP), GenAI, HL7, FHIR, Boomi, Informatica, SnapLogic, Workato
Job PostingView all
2w
Save
Mark Applied
Hide
Sr Applications Developer
Broomfield, Colorado, United States
HybridFull Time
Sonepar
Sonepar: Global leader in B2B distribution of electrical products and services.
3+ YOEBachelor's degree in computer science, information technology, or related field; 3–5 years of full-stack development experience with .NET, ASP.NET MVC, C#, SQL Server, APIs, web technologies, and integrations.
Microsoft .NET Framework, ASP.NET MVC, C#, Visual Studio, Microsoft SQL Server, RESTful services, Web API, JavaScript, TypeScript, jQuery, JSON, HTML, CSS, XML
Job PostingView all
3w
Save
Mark Applied
Hide
Full Stack Developer
Naperville or Denver
$95k-$115k/yr HybridFull Time
PTMA Financial Solutions
PTMA Financial Solutions: Private financial services firm providing treasury management and investment advisory solutions to public entities and financial institutions.
2+ YOEBachelor's degree or equivalent experience, 2–5 years of professional experience, and development experience with Java, Node.js, SQL, Python, APIs, relational databases, and Unix shell scripting.
Java, Node.js, SQL, Python, HTTP, JSON, WebSockets, ClaudeCode, GitHub Copilot, Unix, Microsoft SQL Server, PostgreSQL, Azure SQL, Oracle, APIs
Job PostingView all
5d
Save
Mark Applied
Hide
Mulesoft Developer
New York City or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Seattle or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$54k-$196k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
3+ YOERequires 3+ years software development, 2+ years API development and Git/Agile/testing, 1+ year MuleSoft experience, MuleSoft Developer Level 1 certification, and a bachelor's degree or equivalent experience.
Anypoint Platform, Anypoint Studio, Mule Runtime, DataWeave, MUnit, Git, Java, XML, JSON, YAML, Anypoint MQ, API Manager, Anypoint Exchange, CloudHub, Salesforce, SAP, Workday, Oracle Cloud Applications, ServiceNow, AWS, Azure, Flex Gateway, Model Context Protocol (MCP), Boomi, Informatica, SnapLogic, Workato
Job PostingView all
1w
Save
Mark Applied
Hide
Software Engineer Associate
Boulder or Conyers
$69k-$149k/yr OnsiteFull Time
QSC
QSC: Privately held QSC manufactures cloud-manageable audiovisual systems and professional audio equipment for commercial and entertainment users.
Requires a bachelor's degree or equivalent experience, scripting and API experience, software development and source control practices, AV hardware knowledge, UI/UX experience, and Lua or similar language proficiency.
Q-SYS, Lua, SSH, TCP, HTTP, APIs
Job PostingView all
2mo
Save
Mark Applied
Hide
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
Campspot
Campspot: Campground reservation software and outdoor-stay marketplace serving campground operators and campers across North America.
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
Job PostingView all
2mo
Save
Mark Applied
Hide
Staff SW Engineer
Denver, Colorado, United States
$124k-$199k/yr HybridFull Time
Visa
VisaNYSE: V: Global leader in digital payments and transaction technology.
5+ YOE5+ years relevant experience (or equivalent advanced degree/experience), strong backend development (e.g., Java), API and database expertise, systems integration and data structure knowledge, familiarity with Kubernetes/Docker, strong collaboration and communication.
Java, APIs, Kubernetes, Docker
Job PostingView all
3w
Save
Mark Applied
Hide
OutSystems Developer
Bellevue or Dallas or Denver or New York City or Pasadena or Wichita
$100k-$130k/yr OnsiteFull Time
IMA Financial Group
IMA Financial Group: Employee-owned insurance brokerage and financial services firm serving businesses and individuals with risk, benefits, and wealth solutions.
3+ YOEBachelor's degree or equivalent experience; 3–5 years of software development experience with OutSystems, REST APIs, SQL, relational databases, HTML, CSS, and JavaScript. Agile and SDLC knowledge required.
OutSystems, OutSystems Service Studio, Integration Studio, REST APIs, API Connectors, SQL, HTML, CSS, JavaScript, Microsoft Azure, Microsoft SharePoint, Microsoft Power Apps, Microsoft Power Automate, Microsoft Power BI, Microsoft Dataverse, Microsoft 365, Microsoft Teams, Git, CI/CD
Job PostingView all
2mo
Save
Mark Applied
Hide
Application Developer - Senior
Colorado Springs or Reston
$60k-$180k/yr HybridFull Time
Aleut Federal
Aleut Federal: Alaska Native-owned federal services contractor delivering technology, mission support, construction, and environmental services to government clients.
7+ YOE7+ years software development, 5+ years ServiceNow, Java knowledge, 4+ years development lead experience, integration/API development, IT-II/Tier 3/NACLC/ANACI eligibility or current Tier 3 investigation; relevant ServiceNow and agile certifications preferred.
ServiceNow, Java
Job PostingView all

Explore Jobs

Expand Your Job Search