API jobs in Boulder, CO

Remote

•

Today

No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java v17 and v21Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, Redshift which is migrating that to Sno

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Contract

Depends on Experience

Full Stack Java Developers - React- API - Java v21

Remote

•

Today

No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java v17-v21Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, Redshift which is migrating that to Snowfla

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Contract

Depends on Experience

Full Stack Java Developers - React- API

Remote

•

Today

No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java version up to 21Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, Redshift which is migrating that t

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Contract

Depends on Experience

Java Full Stack Developer - API, UI, React, Redshift, MST OR CST Time Zones

Remote

•

Today

Java Full Stack - API, UI, React Redshift Type: W2 With Benefits - No C2C Location: Remote - Working MST OR CST Time Zones Top 5 Technical Skills: Java, Spring Boot, API Developer, UI (React) Developer, Strong SQL, Redshift Full stack AWS (basic services) RDS, EC2, S3, Lambda, SNS, Redshift Top 3 Soft Skills: Strong Communications Working with Business Product Owners and Stakeholders Agile Job Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are

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Full-time

Depends on Experience

Azure API Engineering

Remote

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2d ago

Title: Azure API Engineering Location: Remote (USA) Role Overview The Senior API Engineer will be responsible for building and supporting scalable, secure, and high-performance APIs on Microsoft Azure. The ideal candidate will have hands-on experience with Azure API Management, Azure Functions, cloud networking, security, infrastructure automation, and CI/CD practices. Experience with MuleSoft and AI-assisted development tools is highly desirable. Key Responsibilities Design, develop, dep

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Contract, Third Party

$Dependence on the experience

Quality Assurance Engineer

Hybrid in Denver, Colorado

•

Today

Quality Assurance Engineer || Contract || Hybrid- Denver, CO. Location: Denver, CO. Interview: Onsite. Position: Quality Assurance Engineer. Position Type: Contract. Work Mode: Hybrid: 1 day per week onsite Key Responsibilities & Skills Strong knowledge of manual and automated testing, including functional, regression, API, performance, and exploratory testing. Develop and maintain automated tests using Playwright, TypeScript, Java, k6, MCP, and AI-assisted testing. Translate business and functi

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Contract

$50 - $70

Full Stack Java Developer - API, React, UI, Redshift, MST OR CST Time Zones - ZL

Remote

•

2d ago

Full Stack Java Developer - MST OR CST Time Zone No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java,Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, R

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Full-time

Depends on Experience

FTE :: Integration Architect (API and event) || Remote

Remote

•

Today

FTE :: Integration Architect (EPIC; API and Event) || Remote Role Description: Own integration architecture across source systems (Epic, ELMS, Oracle ERP/HR/Finance, terminology), Informatica MDM, TopBraid, Collibra, Google Cloud Platform and downstream consumers Key Responsibilities: Define end-to-end integration patterns for APIs, batch, events, pipelines, FHIR/data services, tables/files and data products.Define source/target contracts, interface ownership, SLAs, error handling, retry/replay,

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Full-time

$160,000 - $200,000

Java Full Stack Developer - API, React, UI, Redshift, CST OR MST Time Zones - ZL

Remote

•

2d ago

No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java,Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, Redshift which is migrating that to Snowflake Stro

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Full-time

Depends on Experience

Full Stack Java Developer - React, UI, API, Redshift, AWS - ZL

Remote

•

2d ago

Easy Apply

Full-time

Depends on Experience

Principal Software Engineer

Denver, Colorado

•

Today

A growing aerospace and satellite communications organization is hiring a Principal Software Engineer for a hybrid role in the Denver area. This position focuses on building and integrating mission-critical applications that support satellite operations and mission orchestration. The environment is heavily centered around cloud-native technologies including Kubernetes, containerized microservices, APIs, databases, and modern backend services. This is an opportunity to join a highly technical eng

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Full-time

$130000 - $170000

Apigee API Security Developer

Remote

•

Today

Strong experience in API Security solutions and securing enterprise REST APIs.Hands-on experience with OAuth 2.0, authentication, authorization, JWT, access tokens, scopes, and OIDC.Experience with Okta and Auth0, preferably hands-on experience with Okta-to-Auth0 migration.Strong Java and Node.js development experience.Experience designing and developing RESTful APIs and Microservices.Strong AWS experience, particularly with cloud-based API and microservices architectures.Experience with FHIR AP

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Contract, Third Party

Depends on Experience

Lead Software Engineer (API Management)

Remote

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5d ago

Terms of Employment: Contract Duration: 4 Months (Short-term contract, potential extension based on performance and budget) Location: Remote (Must be based in approved East Coast states; must attend final round interview on-site in Reston, VA and be available for occasional on-site visits as required) Overview: Client is seeking an experienced Lead Software Engineer to join a dynamic enterprise integration team at a industry-leading organization. In this role, you will lead critical API migratio

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Contract

$80+

Technical Systems Analyst Exp with API and Banking Exp at Midvale UT( Need Local Candidates)

Remote or Midvale, Utah

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2d ago

REMOTETechnical Systems Analyst Exp with API and Banking ExpDuration:12 month contractLocation:Midvale UT.JOB DESCRIPTIONKey Responsibilities Serve as Technical Systems Analyst on agile software development projects, developing andmaintainingthe application integration architecture and leading proof of concept activitiesServe as a lead systems analyst in the development team to plan, coordinate,analyze, design, document and implement application integrations efforts to meet current and future ne

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Contract

Depends on Experience

WSO2: APIM (API Manager) - Remote

Remote

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9d ago

WSO2: APIM (APIManager) / Bijira, MI (Micro Integrator) / Devant, Ballerina.Runtime/Platform: Kubernetes, containers, ingress/controllers, service mesh (optional).OS/Infra: Linux administration (networking, systemd, filesystems), container registries (ACR/ECRR/Harbor) required for the middleware platform deployment and maintenance.Identity: Microsoft Entra (Azure AD) for OAuth2/OIDC/SAML, JWKS, app registrations.Messaging & Data: JMS/Kafka/RabbitMQ, MFT/SFTP, SQL/NoSQL.Observability & Security:

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Contract

Depends on Experience

API Lead

Remote

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30+d ago

Job Title: API Lead JobLocation:Remote Job Duration: Fulltime Client: Federal Agency Key Responsibilities Design, develop, and maintain enterprise applications and integration solutions.Build and support REST APIs, web services, and enterprise integration frameworks.Design scalable, secure, and reusable integration architectures.Lead FHIR API development using FHIR and HL7 standards.Develop cloud-based integration solutions (AWS preferred).Create data mappings between databases, JSON, XML, HL7,

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Contract, Third Party

70 - 80

API Product & MCP Engineer

Remote

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6d ago

Job OverviewWe are seeking a highly skilled API Product & MCP Engineer to design, develop, govern, and support scalable API products and modern integration solutions. This role will focus on enabling API consumers, establishing API governance standards, supporting secure API onboarding and consumption patterns, and building reliable API platforms that meet enterprise scalability, security, and usability requirements. The ideal candidate has strong hands-on experience with REST APIs, API manageme

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Contract

30 - 40

API & Data Pipeline Quality Engineer - NYC/Remote

Remote

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9d ago

Role Overview The API & Data Pipeline Quality Engineer is responsible for ensuring the reliability, scalability, and data integrity of enterprise APIs and cloud-based data platforms. This role drives end-to-end quality engineering practices across API services, data pipelines, and analytical environments, with a strong focus on automation, observability, and modern cloud architectures using AWS. Key Responsibilities API Quality Engineering Design and execute automated testing strategies for REST

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Contract

$60 - $70

Cloud API Architect || W2 & C2C

Remote

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12d ago

Cloud API ArchitectLocation: RemoteExperience: 15+ YearsRole Overview: We are seeking a highly experienced Cloud API Architect to design, develop, and govern enterprise-grade API platforms for a leading banking client. This role will be responsible for defining API architecture strategy, implementing secure and scalable cloud-native APIs, and enabling seamless integration across enterprise applications, digital channels, and third-party systems. The ideal candidate will have deep expertise in AP

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Contract

Depends on Experience

API Developer

Remote

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30+d ago

Job Title: API Developer JobLocation:Remote Job Duration: Contract Client: Federal Agency Key Responsibilities Design, develop, and support front-end, back-end, and data integration solutions.Build and maintain cloud-based and Salesforce applications.Design, develop, and maintain backend applications and infrastructure.Define and document application architecture and technical solutions.Research and evaluate new technologies and recommend best-fit solutions.Ensure development follows coding sta

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Contract, Third Party

60 - 70

API jobs in Boulder, CO, USA