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89 api developer integration engineer jobs at 74 companies in Castle Rock, CO

1mo
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Integration Engineer (Epic Integration Specialist)
Denver, Colorado, United States
$120k-$130k/yr HybridFull Time
Eon
Eon: AI platform for managing incidental findings and patient care.
4+ YOE4+ years in healthcare integrations with deep Epic experience, .NET (C#), HL7/FHIR, AWS, API and data pipeline development, strong communication and problem-solving skills.
.NET (C#), HL7, FHIR, CCD, CDA, Lambda, API Gateway, S3, RDS, ECS, Terraform, CloudFormation, REST, SOAP, Epic Bridges, Care Everywhere
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1mo
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Senior Integration Engineer
New York or Denver or United States or Europe
$125k-$160k/yr HybridFull Time
Gen II Fund Services
Gen II Fund Services: Provides fund administration services to private capital asset managers
5+ YOE5+ years integration engineering; deep Azure Function Apps, Logic Apps Standard, Azure Service Bus, and API/Service Bus configuration; strong C#; CI/CD, IaC (Bicep), Snowflake desirable; active use of AI-assisted development; bachelor's degree required.
Azure Function Apps, Logic Apps Standard, Azure API Management, APIM, Azure Service Bus, Bicep, C#, Snowflake, LLMs, codegen, Claude, CI/CD, IaC, WDL
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2mo
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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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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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2w
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Senior Platform Integration Engineer
Littleton, Colorado, United States
$96k-$138k/yr OnsiteFull Time
EchoStar
EchoStarNasdaq: SATS: Global provider of satellite solutions and wireless communications services.
5+ YOEBachelor's in CS/IT/CE,5+ years in platform integration/systems engineering,3+ years with entitlement servers/eSIM/API/CI-CD or IaC,strong troubleshooting and networking expertise.
GSMA TS43, eSIM, MDM, API, CI/CD, infrastructure-as-code, Terraform, Kubernetes, Retrieval-augmented generation (RAG)
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1mo
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Senior Integration Engineer
New York or Denver
$125k-$160k/yr HybridFull Time
Gen II Fund Services
Gen II Fund Services: Global fund administration for private capital asset managers.
5+ YOE5+ years integration engineering experience with Azure Function Apps, Logic Apps, Service Bus, API Management, strong C# skills, AI-assisted development experience, CI/CD and IaC (Bicep); Bachelor's degree or equivalent.
Azure Function Apps, Logic Apps Standard, Azure API Management (APIM), Azure Service Bus, Bicep, C#, Snowflake, LLMs, Claude, codegen, IaC, CI/CD, WDL
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2w
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BIM Integration Developer - Kiewit Infrastructure Engineers
Omaha or Lone Tree
$92k-$111k/yr OnsiteFull Time
Kiewit
Kiewit: Provides large-scale construction and engineering services for diverse infrastructure.
3+ YOE3+ years software development; bachelor’s in CS/SE/Engineering or equivalent; strong C#/.NET, REST API, React, SQL, Git, CI/CD; familiarity with BIM, ETL, and cloud platforms.
C#, .NET, RESTful APIs, React, JavaScript, TypeScript, SQL, Git, CI/CD, MongoDB, elasticsearch, IFC, Microsoft Azure, Copilot
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2w
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Senior Backend and Integration Engineer (IT)
Denver, Colorado, United States
$85k-$135k/yr RemoteFull Time
DaVita
DaVitaNYSE: DVA: Provides kidney dialysis and integrated chronic disease management services.
7+ YOE7+ years back-end and integration engineering experience; Node.js, SQL, cloud database migrations, GCP BigQuery/Cloud SQL, Salesforce and middleware integration; strong security and API design skills.
Node.js, Salesforce, BigQuery, Cloud SQL, Google Cloud Platform (GCP), Microsoft SQL Server, Fuse, OWASP
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3mo
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Principal Integration and Test Engineer
Boulder, Colorado, United States
$160k-$180k/yr OnsiteFull Time
Auria
Auria: Engineering and software solutions for space and defense missions.
3+ YOEDesign, develop, and execute CI/CD tests; verify system functionality; collaborate in Agile team; DoD Secret clearance.
Jira, Confluence, GitLab CI/CD, Docker, APIs
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1mo
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Senior Software Engineer – API & Cloud Integrations (Java, AWS)
Denver or Cedar Rapids or Philadelphia
$94k-$120k/yr HybridFull Time
Transamerica
TransamericaNYSE: AEG: Provides insurance, retirement solutions, and investment products to customers.
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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2mo
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Integration Product Manager & Developer Advocate
Westminster or Lake Oswego
$145k-$199k/yr OnsiteFull Time
Trimble
TrimbleNASDAQ: TRMB: Provides hardware, software, and services for construction and geospatial industries.
7+ YOE7+ years in product management, DevRel, software engineering, or technical program management; strong SQL, REST API, and SDLC proficiency; domain expertise in construction finance; hands-on Trimble Vista/Spectrum experience; excellent communication.
SQL, REST APIs, Trimble Vista, Trimble Spectrum, Procore
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2mo
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Integration Product Manager & Developer Advocate
Westminster or Lake Oswego
$145k-$199k/yr OnsiteFull Time
Trimble
TrimbleNASDAQ: TRMB: Provides hardware and software for precision positioning and modeling.
7+ YOE7+ years in product management, DevRel, software engineering, or technical program management; proficiency with SQL, REST APIs, and SDLC; domain expertise in construction financial workflows; hands-on Trimble Vista/Spectrum experience; strong communication.
SQL, REST APIs, Trimble Vista, Trimble Spectrum, Procore
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1mo
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Senior Platform Engineer, AI
Denver or Long Beach
$170k-$275k/yr HybridFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
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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1mo
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Senior Backend Engineer
Colorado Springs, Colorado, United States
$160k-$185k/yr HybridFull Time
Sphinx Defense
Sphinx Defense: Develops software for secure satellite and space mission operations.
5+ YOE5+ years software engineering experience; strong Python, FastAPI, Postgres, AWS, Docker, Kubernetes, Terraform; cloud architecture, API/backend development, security focus, mentorship and customer integration skills.
Python, FastAPI, Postgres, AWS, Docker, Kubernetes, Terraform
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1mo
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Senior Systems Engineer
El Paso County or Huntsville
$112k-$196k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
7+ YOEBS in STEM, 7+ years in systems engineering/software integration/enterprise architecture, active Secret clearance, API integration, MBSE/SysML, cloud/container experience, dashboard and DevSecOps familiarity.
SysML, Cameo, MagicDraw, Sparx EA, Rhapsody, Power BI, Tableau, Grafana, Kibana, Kubernetes, GitLab, Terraform, CI/CD, Link 16
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1mo
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Senior+ Software Engineer - Integrations Platform
Denver or San Francisco or India
$160k-$240k/yr OnsiteFull Time
Frontera Health
Frontera Health: AI-driven platform for automating and improving autism clinical care.
6+ YOE6+ years backend/full-stack engineering experience building APIs, integration platforms or data pipelines; strong system design and distributed systems knowledge; technical leadership and mentoring experience; experience with third‑party integrations (EHRs) and regulated data preferred.
APIs, EHRs, AI/ML
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1mo
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Staff SW Engineer
Denver, Colorado, United States
$124k-$199k/yr HybridFull Time
Visa
VisaNYSE: V: Global payment technology facilitating electronic funds transfers.
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
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2mo
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People Systems Developer
Boston or Denver or New York
$145k-$215k/yr HybridFull Time
Datadog
DatadogNASDAQ: DDOG: Observability and security platform for cloud applications and infrastructure.
3+ YOE3-5 years in software engineering or advanced automation; experience with LLMs, AI-enabled workflows, and production integration; strong API integration (n8n, Zapier, Workato); familiarity with HR systems; independent in fast-paced environments; clear stakeholder communication.
LLMs, APIs, n8n, Zapier, Workato, Workday, Greenhouse, Claude, OpenAI, Anthropic, Gemini, Cursor
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4w
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App Engineer
Denver, Colorado, United States
$100k-$115k/yr HybridFull Time
Janus Henderson
Janus HendersonNYSE: JHG: Provides global asset management and investment advisory services.
Proficient PHP and WordPress multisite development, React/Gutenberg block development, SCSS/CSS, JavaScript (ES6+), Git, Composer, npm, Docker, Jira; experience working in Agile teams and integrating third-party APIs.
PHP, WordPress, WordPress VIP, React, JavaScript (ES6+), SCSS, Git, Docker, Composer, npm, Jira, GitHub Copilot, PHP Unit, Veracode
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1mo
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Frontend Engineer
Toulouse or San Francisco or Golden
OnsiteFull Time
Loft Orbital
Loft Orbital: Deploy and operate satellite missions for organizations and governments.
Proficiency in TypeScript, HTML, CSS, experience with Vue.js or React, SPA development, GraphQL APIs, and unit/integration testing (e.g., Vitest, Jest, Cypress). Web Components and geospatial libraries are a plus.
Vue.js, TypeScript, HTML, CSS, GraphQL, Vitest, Jest, Cypress, Web Components (Lit), Leaflet, Mapbox, CesiumJS
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