Staff software Engineer (API, Microservices, Oauth)- Contract

QUESSCORP SINGAPORE PTE. LTD.

Singapore, Singapore
**
Open api design and swagger definitions
Microservices architecture and java development
Oauth and jwt authentication implementation
** Quesscorp Singapore Pte. Ltd. is seeking a Staff Software Engineer on a contract basis, focusing on API and microservices architecture, particularly within corporate banking solutions. The role involves technical design, integration, and testing of various banking applications, requiring expertise in Open API, Java, Oauth, and related technologies. **

Job Summary

  • The role involves owning the full technical delivery lifecycle from requirements analysis to solution design, integration, testing, and rollout for the Corporate Banking channel.
  • Candidates will produce engineering-ready specifications including REST/JSON API specs, OpenAPI/Swagger definitions, and sequence diagrams for complex payment flows.
  • The position requires defining robust preprocessing logic for customer validation, entitlement checks, funds availability, and duplicate suppression within a microservices environment.

Matching Summary

Match Score: 75

** Quesscorp Singapore Pte. Ltd. is seeking a Staff Software Engineer on a contract basis, focusing on API and microservices architecture, particularly within corporate banking solutions. The role involves technical design, integration, and testing of various banking applications, requiring expertise in Open API, Java, Oauth, and related technologies. **

Skills & Requirements

Must-have

  • Open API design and Swagger definitions
  • Microservices architecture and Java development
  • OAuth and JWT authentication implementation
  • SQL database management and query optimization
  • Payment orchestration and event lifecycle management

Nice-to-have

  • Experience with core banking ledger integration
  • Knowledge of fraud and AML adapter patterns
  • Familiarity with async callback patterns
  • Understanding of idempotency and retry logic

Key Requirements

  • Contract employment status required
  • Strong background in Java and Microservices
  • Proven experience with OAuth and JWT security protocols

Work Rights

Not specified

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