ESB Developer

Greetings,

ESB Developer

• with over 6 years of experience at Synechron in Abu Dhabi.
• J
• ob role: ESB Developer
• **Experience: 6+ years**
• **Location: Abu Dhabi**
• **Hiring mode: Contract (4–5 months, third party)**

About Company

Diversity, Equity, and Inclusion

Job Descriptions

• Prior experience integrating with FinnOne LOS or similar loan origination The ESB / Integration Developer is responsible for designing and implementing the middleware service layer that exposes CASA scorecard variables from the centralised RDBMS to the FinnOne Loan Origination System. The developer must be technically proficient in enterprise service bus architecture, API security, and integration patterns within a financial services context.

Key Responsibilities

• Design and implement ESB services exposing CASA variable outputs from RDBMS via secure SOAP APIs.
• Implement authentication and authorization: OAuth2/JWT token validation, mTLS mutual authentication, request validation, throttling/quota enforcement, caching, and standardised error handling.
• Design and enforce API versioning strategy (semantic versioning), backward compatibility policy, and deprecation framework.
• Build non-prod sandboxes and developer portal artifacts: API specification, usage examples, Postman collection, and client stub code for Finn One LOS integration team.
• Collaborate with the FinnOne LOS team and Finn One Vendor to configure scorecard module consumption of CASA variables: define request frequency patterns, idempotency keys, and error-retry logic at the consumer side.
• Define integration design (sequence diagrams, message timing, fallback scenarios, circuit-breaker patterns) and produce the FinnOne LOS Consumption Guide and configuration checklist.
• Execute non-functional testing (load, stress, endurance) of ESB services and produce tuning reports with bottleneck analysis and recommendations.
• Integrate ESB services into CI/CD pipeline (build, security scan, deploy, rollback) with CAB approval gates for production.
• Ensure all ESB services comply with security standards (IAM, PII masking, encryption at rest and in transit)
• Produce operational monitoring dashboards (latency, error rates, throttle hits, availability) and runbooks for ESB layer; support KT and handover.

• Required Experience & Skills

• 4+ years hands-on experience with enterprise service bus platforms (IBM MQ, MuleSoft, TIBCO, WSO2, or equivalent); strong understanding of SOAP, WSDL, and REST/JSON service design.
• Proven implementation of OAuth2/JWT, mTLS, API gateway policies (throttling, caching, request validation), and security header standards; familiarity with IAM in enterprise banking environments.
• Deep knowledge of enterprise integration patterns: request/reply, idempotency, correlation IDs, circuit breakers, retry/backoff, and dead-letter handling.
• Strong experience with OpenAPI 3.0 / Swagger specification, Postman collections, developer portal documentation, and client stub generation.
• Experience designing and executing load and stress tests for API services; ability to analyse bottlenecks and produce tuning recommendations.
• Prior experience integrating with FinnOne LOS or similar loan origination platforms is highly desirable; understanding of scorecard module consumption patterns.