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717 api engineer jobs at 343 companies in Colorado

1mo
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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
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1mo
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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
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1w
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Multi-Cert API 510/570/653
Commerce City or Denver
$38-$61/hr OnsiteFull Time
Acuren
AcurenNYSE: TIC: Single source provider of technology-enabled asset protection solutions.
6+ YOERequires API 510, API 570, and API 653 certifications, 6–8 years of experience or 2+ years onsite, strong ASME knowledge, and petrochemical engineering support experience.
API, ASME, AWS, NDE, NDT, V-Deck
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1w
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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
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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
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
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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
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2w
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Integration Engineer
Colorado Springs, Colorado, United States
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
7+ YOERequires 7+ years in systems engineering or integration, 3+ years integrating software or mission applications, a bachelor's degree, and Top Secret clearance. Experience with DevSecOps, cloud platforms, containers, APIs, and integration patterns.
GitLab, Docker, Kubernetes, Service Mesh, Jira, Confluence, Cameo, Magic Draw, AWS, DevSecOps, Agile, CI/CD, Linux, API, Microservices, Model-Based Systems Engineering (MBSE)
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4w
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Manufacturing Engineer--2nd shift
Pueblo, Colorado, United States
$65k-$94k/yr OnsiteFull Time
Trane Technologies
Trane TechnologiesNYSE: TT: Global climate innovator for buildings, homes, and transportation.
Experience in manufacturing engineering, process design and troubleshooting; PFMEA and OSHA/EHS collaboration preferred; programming experience in C/C++, SQL and API/GUI development beneficial; degree in engineering preferred.
C, C++, SQL, API, GUI
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Senior Platform Engineer, AI
Denver or Long Beach
$170k-$275k/yr HybridFull Time
True Anomaly
True Anomaly: Delivering decisive capabilities for space superiority and security.
5+ YOE5+ years software/cloud/DevOps experience; production development in Python/TypeScript/Java; experience with LLM APIs, prompt engineering, RAG, agent frameworks, API integrations; ability to obtain Top-Secret clearance and U.S. citizenship or equivalent status.
Python, TypeScript, Java, CrewAI, Pydantic AI, API, webhooks, MCP, Retrieval-Augmented Generation (RAG), AWS, Azure, GCP, AWS GovCloud, Azure Government, FedRAMP, NIST 800-53, IL4, IL5
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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
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2w
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Customer Delivery Engineer
Toulouse or San Francisco or Golden
OnsiteFull Time
Loft Orbital
Loft Orbital: Space infrastructure helping governments, companies, and research institutions deploy and operate missions in low Earth orbit.
3+ YOERequires 3+ years in operational engineering, production systems, or mission-critical environments; strong Python, APIs, infrastructure, troubleshooting, automation, communication, and customer collaboration skills.
Python, Docker, CUE, API
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1w
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Sr. Staff Systems Engineer
Westminster, Colorado, United States
$128k-$187k/yr OnsiteFull Time
Vantor
Vantor: Forging the new frontier of spatial intelligence.
5+ YOEBachelor's degree in a technical field and 5+ years in systems, software, solution engineering, or architecture. Requires requirements analysis, system design, architecture, integration, APIs, Agile, and SDLC experience.
ConOps, Software Development Life Cycle (SDLC), microservices, DevSecOps, CI/CD, Jira, Confluence, INCOSE, SAFe, AWS, Azure, GCP, APIs
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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
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2mo
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Senior Facilities Engineer
Denver or Williston
$185k-$230k/yr OnsiteFull Time
KODA Resources
KODA Resources: Private Denver-based oil and gas acquisition and development operating in the Rocky Mountain region.
10+ YOEBachelor's in engineering, 10+ years facilities engineering in oil & gas, experience leading capital projects, proficiency with AFT, HYSYS, Piper, Pipesim, AutoCAD, valid driver's license, familiarity with API/ASME/NFPA and PHA/MOC.
AFT, HYSYS, Piper, Pipesim, AutoCAD
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2w
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Senior Solutions Engineer
Denver or New York City
$92k-$105k/yr OnsiteFull Time
Trustpilot
TrustpilotLondon Stock Exchange: TRST: Public Danish SaaS platform connecting consumers and businesses through independent online reviews.
Experience in pre-sales, solutions consulting, or technical advisory roles in SaaS or technology; knowledge of APIs, web integrations, data flows, SaaS architecture, and strong communication and presentation skills.
APIs, Trustpilot Academy, Blinkist
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2mo
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Principal Production Engineer (New York, NY, US, 10036)
New York City or California or Colorado or Washington
$203k-$305k/yr OnsiteFull Time
Paramount Global
Paramount GlobalNASDAQ: PARA: Global media and entertainment conglomerate.
10+ YOE10+ years in integration/tools engineering, expert Python, experience shipping production-grade web services, deep API/auth/SSO and data systems knowledge, strong cross-functional communication.
Python, Go, TypeScript, C++, MCPs, APIs, SSO, VPC, AI/ML, LLM
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2mo
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Sr. Engineer - Oil & Gas
Lisle or St. Louis or Charlotte or Indianapolis or Greenwood Village
HybridFull Time
Farnsworth Group
Farnsworth Group: Full-service engineering, architecture, and surveying firm.
5+ YOEBS in engineering (ABET), 5-15 years oil/gas engineering experience, 3+ years project management, knowledge of DOT/API/ANSI/ASME standards, Microsoft Word/Excel/PowerPoint/Project proficiency, valid driver’s license, willing to travel.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project
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3w
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Forward Deployed Engineer
Morrisville or Chicago or Raleigh or California or Colorado or Connecticut or District of Columbia or Hawaii or Illinois or Maryland or Massachusetts or Minnesota or Nevada or New Jersey or New York or Oregon or Rhode Island or Washington
$180k-$220k/yr HybridFull Time
Lenovo
LenovoHKSE: 992: Global technology delivering Smarter Technology for All.
5+ YOERequires 5+ years in software engineering, solutions engineering, applied AI, or related technical work; experience deploying AI solutions, LLMs, retrieval architectures, agents, enterprise APIs, and workflow platforms.
Microsoft Copilot Studio, Azure OpenAI, Microsoft 365, Microsoft Power Platform, ServiceNow, Python, JavaScript
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5d
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Sr MES Engineer
Boulder, Colorado, United States
$125k-$150k/yr OnsiteFull Time
Excelitas Technologies
Excelitas Technologies: Global technology leader in photonics, sensing, and illumination solutions.
8+ YOEBachelor's degree or equivalent experience; 8+ years in manufacturing, including 3+ years with MES or digital shop-floor implementations; experience leading MES lifecycle phases and knowledge of data mapping, SQL, APIs, and automation interfaces.
Siemens Opcenter Execution Semiconductor, SAP, SQL, APIs, middleware, System Integration Testing (SIT), User Acceptance Testing (UAT)
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2w
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Knowledge Engineer - Back End
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
$26-$94/hr HybridFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
3+ YOERequires 3+ years in knowledge graph hydration, ontology mapping, graph and relational databases, vector databases, Python or Java, REST APIs, and a bachelor's degree or equivalent experience.
R2RML, SPARQL, StarDog, GraphWise, Neo4J, Elasticsearch, OpenSearch, SQL, PostgreSQL, MySQL, SQL Server, Pinecone, Weaviate, Milvus, Qdrant, Python, Java, REST API, Docker, Kubernetes, GraphQL, D3.js, Cytoscape.js, AWS Neptune, Azure Cosmos DB, Kafka, RabbitMQ, Terraform, Helm
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