Middleware Integration Developer – MuleSoft / IBM Integration Bus (IIB / ACE)

Position Name: Middleware Integration Developer – MuleSoft / IBM Integration Bus (IIB / ACE)

Location: Remote Job. USA

Description:

We are seeking for one of our clients an experienced Middleware Integration Developer with strong expertise in MuleSoft and IBM Integration Bus (IIB) / App Connect Enterprise (ACE) to design, build, and maintain enterprise integration solutions.

In this role, you will be responsible for bridging cloud and on-premises systems, enabling API-led connectivity, modernizing legacy integrations, and ensuring reliable, secure data flows across the enterprise.

This position plays a key role in large-scale digital transformation and migration initiatives within a high-demand integration environment.

Role and Responsibilities

API Design & Development

• Design, develop, and deploy RESTful and SOAP APIs using MuleSoft Anypoint Platform and IBM IIB/ACE
• Implement API-led connectivity patterns and reusable integration assets
• Define API specifications using RAML / Swagger (OpenAPI)

System Integration

• Integrate cloud-based applications with on-premise systems and databases
• Build scalable and secure integration solutions to support business workflows
• Work with message-oriented middleware and enterprise service buses

Data Transformation & Mapping

• Develop data transformations using DataWeave (MuleSoft) and ESQL (IIB/ACE)
• Handle multiple data formats including XML, JSON, CSV, and flat files

Message Processing

• Design and implement message flows using IBM MQ
• Ensure reliable, asynchronous communication and error handling

Production Support & Maintenance

• Troubleshoot, debug, and resolve integration issues in production environments
• Enhance and optimize existing integrations for performance and stability
• Support SLAs and operational excellence

Migration & Modernization

• Participate in modernization initiatives, including migration from IIB to MuleSoft or IBM ACE
• Refactor legacy ESB integrations into cloud-native and microservices-based architectures

Required Qualifications

· 3–5 years of hands-on experience in middleware or integration development

· Strong experience with MuleSoft and/or IBM IIB/ACE

· Solid understanding of ESB concepts, message queuing, and integration patterns

· Experience working with APIs, data transformations, and middleware security

· Familiarity with Agile/Scrum methodologies

· Experience with CI/CD pipelines and DevOps practices

Technology Stack

· MuleSoft Anypoint Platform, DataWeave, CloudHub

· IBM IIB / ACE, IBM MQ

· Java, ESQL, SQL, XML, JSON

· SOA, Microservices, API-led Connectivity

Preferred / Nice to Have

· Experience with cloud platforms (AWS, Azure, or GCP)

· Migration experience from traditional ESB to cloud-native platforms

· Exposure to containerization or Kubernetes

· Prior experience in large enterprise environments

Job Type: Full-time

Pay: $108,910.20 - $131,160.67 per year

Benefits:

• 401(k)

Work Location: Hybrid remote in Hemet, CA 92545

Salary : $108,910 - $131,161