Role & seniority: ESB Integration Tester (experienced), 4–5 years in ESB and API integration testing

Stack/tools: IBM integration stack (API Connect, DataPower, App Connect Enterprise, MQ); API testing: ReadyAPI, SOAP UI, Postman; automation frameworks; SQL; security testing; logging/troubleshooting; optional: JMeter, SoapUI, CI/CD, IBM monitoring tools (Instana, AppDynamics, ACE dashboards)

Top 3 responsibilities

Perform end-to-end ESB and API integration testing using IBM tools; validate APIs and services across middleware
Design, build, and maintain automation frameworks; enhance scripts for regression and performance testing
Develop SQL queries for backend data validation/performance; conduct security, load, regression testing; troubleshoot via logs and defect management

Must-have skills

4–5 years in ESB/API integration testing with IBM tools (API Connect, DataPower, ACE, MQ)
Hands-on with ReadyAPI/SOAP UI/Postman; strong SQL for data validation; security protocol validation; log analysis and troubleshooting
Documentation and communication proficiency; ability to collaborate across development, middleware, and business teams

Nice-to-haves

Experience with JMeter or SoapUI for advanced load testing
Understanding of CI/CD-based regression automation
Exposure to IBM monitoring/logging tools (Instana, AppDynamics, ACE dashboards)
Location & work type: Lansing, MI; two positions; on-site or as specified by employer (noted locat

Full Description

We are looking for an experienced ESB Integration Tester to support enterprise middleware initiatives leveraging IBM integration technologies. The selected candidate will play a key role in validating APIs, ensuring seamless system integrations, and supporting high quality enterprise data exchanges.

Job Title: ESB Integration Tester

Location: Lansing, MI

Positions: 2

Key Responsibilities

Perform end to end ESB and API integration testing using IBM tools

Validate APIs and services across middleware platforms

Design, build, and maintain automation frameworks from scratch

Enhance and optimize automation scripts for regression and performance testing

Develop and execute SQL queries for backend data validation and performance analysis

Conduct security protocol validation along with load, regression, and performance testing

Troubleshoot integration issues through log analysis and defect management

Validate functional workflows and data flows within public health domain systems

Utilize IBM ITX for mapping, transformation, and validation of healthcare data formats

Collaborate effectively with development, middleware, and business teams

Required Skills And Experience

4 to 5 years of experience in ESB and API integration testing with IBM tools such as IBM API Connect, IBM DataPower, IBM App Connect Enterprise, and IBM MQ

Strong hands on experience with ReadyAPI, SOAP UI, and Postman for API testing and automation

Experience building automation frameworks from the ground up

Strong SQL skills for data validation and performance tuning

Experience in security protocol validation and performance testing

Proficiency in integration troubleshooting and log analysis

Strong documentation and communication skills

Preferred Qualifications

Experience with JMeter or SoapUI for advanced load testing

Understanding of CI CD based regression automation

Exposure to IBM monitoring and logging tools such as Instana, AppDynamics, or ACE dashboards