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# WebSphere & API Integration Engineer

- **Company:** THE VIVA PARTNERSHIP, INC.
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $135,200 - $145,600
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Application Performance Management, Continuous Integration, DevOps, Distributed Systems, Middleware, Java Platform Enterprise Edition (J2EE), IBM Websphere Application Server, Mainframes, Enterprise Messaging Systems, OAuth, Performance Tuning, Regression Testing, Swagger, Software Engineering, Web Services, Enterprise Software Applications, Postman, DevOps Tools - Open-source, Software Security, Apigee, Git, Documentation System, Event Driven Architecture, Information Technology, Enterprise Integration, Api Design, Restful APIs, Api Management, Docker, Jenkins, Mulesoft
- **Published:** October 22, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=42e7fdb3f5e2a7e3

## About the Role

1. Bachelor's degree in computer science, Information Technology, or related field
 2. Minimum 5 years of experience supporting WebSphere Application Server and enterprise middleware environments
 3. Minimum 5 years of experience in API development/support within enterprise environments
 4. Strong knowledge of IBM WebSphere Application Server architecture, installation, configuration, administration, and troubleshooting
 5. Experience with IBM Host Access Transformation Services (HATS)
 6. Proficiency in Java / Java EE and RESTful API development concepts
 7. Experience with API testing and documentation tools such as Postman and Swagger
 8. Strong understanding of enterprise integration, middleware, distributed systems, and of enterprise integration, middleware, distributed systems, and web services
 9. Experience supporting application performance tuning and operational optimization
 10. Familiarity with DevOps, CI/CD, and automation concepts
 11. Strong problem-solving, troubleshooting, and analytical skills
 12. Strong communication and collaboration skills supporting cross-functional teams

Nice to Have Skills:
Experience with Docker and Kubernetes
Familiarity with API security standards (OAuth, JWT, SSL/TLS) standards (OAuth, JWT, SSL/TLS)
Experience with Jenkins, Git, RAD, or other DevOps tooling
Familiarity with API management platforms such as Apigee, Kong, or MuleSoft
Experience supporting enterprise environments within federal or regulated industries
IBM WebSphere-related certifications
Experience with event-driven architectures and messaging technologies
7-10+ years overall enterprise middleware/API support experience

## Description

The purpose of this request is to support the client's (B) Mainframe Operations and Application Support environment through a combined WebSphere Application Server (WAS) and API Development resource responsible for supporting enterprise middleware, API integration, HATS-based services, and application connectivity within the RRB IVR and mainframe ecosystem., The resource will serve as a WebSphere Application Server (WAS) and API Integration Subject Matter Expert responsible for, maintaining, troubleshooting, and enhancing enterprise application services, middleware components, and HATS-based API integrations running within the RRB environment., Provide administration, configuration, maintenance, and operational support for IBM WebSphere Application Server (WAS) environments
Support and maintain HATS-based APIs transforming 3270/5250 mainframe applications into RESTful services
Troubleshoot and resolve WebSphere, API, middleware, and integration-related issues
Perform WebSphere health checks, performance analysis, tuning, and
Maintain and update HATS macros, Integration Objects, RESTful service files, and related API components
Support API testing, validation, troubleshooting, and regression testing using tools such as Postman
Collaborate with cross-functional infrastructure, mainframe, application, and operations teams to support enterprise integrations
Support integration of WebSphere and API services within the software development and deployment lifecycle
Assist with DevOps, automation, and operational improvement initiatives where applicable
Develop and maintain technical documentation, operational procedures, configurations, and knowledge transfer materials
Participate in root cause analysis, incident resolution, change implementation, and post-implementation support activities
Provide technical guidance, operational recommendations, and knowledge transfer to IBM and customer teams
Support secure API and middleware practices including SSL/TLS and authentication/security integration