Senior API & Middleware Engineer - Payments & Cloud

OCBC; Singapore; On-site; SGD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible benefits

Professional development

Community initiatives

Equal opportunity

Job summary

OCBC is seeking an experienced API & Middleware Engineer to lead design, development, and governance of enterprise APIs and microservices using Java, Spring Boot, and WSO2 across on‑premises and AWS.

You will guide a team of engineers, collaborate with Product Owners and Architects, and own end-to-end payment services development from initiation to settlement while ensuring security and reliability in a cloud-enabled environment.

Qualifications

• Bachelor’s degree in Computer Science, IT, or related field.
• 8+ years of hands-on software engineering experience in enterprise apps.
• Experience leading technical teams and delivering complex projects.
• Minimum 5 years in payments domain covering initiation, processing, clearing, settlement, reconciliation.

Responsibilities

• Lead design, development, and maintenance of APIs and microservices using Java, Spring Boot, and WSO2.
• Provide technical leadership to engineers, promoting engineering excellence.
• Collaborate with Product Owners, BAs, and Architects to translate requirements into scalable API solutions.
• Drive architecture, implementation, and governance of RESTful APIs and system integrations.
• Lead development of payment services for end-to-end processing.
• Design highly available, fault-tolerant services meeting business and regulatory requirements.
• Ensure API governance, security, and lifecycle practices (OAuth2, JWT, mTLS).
• Oversee integrations using API, middleware, messaging, and Kafka/IBM MQ.
• Champion reliability with monitoring, observability, and disaster recovery.
• Conduct code reviews, architecture assessments, and RCA with production support.
• Prepare architecture diagrams, API specs, runbooks, and support procedures.
• Identify opportunities to enhance scalability, resilience, and developer productivity.
• Leverage AI-assisted tools to accelerate API design and development.
• Collaborate with leadership to drive AI-enabled automation across API development and ops.
• Ensure AI deliverables comply with security and governance standards.

Skills

Java

Spring Boot

WSO2

AWS

Kafka

IBM MQ

API Design

Docker

Kubernetes

Security

DevOps

Education

Bachelor's degree in Computer Science

Tools

WSO2 API Manager

Spring Cloud

Jenkins

Git

Job description

OCBC is seeking an experienced API & Middleware Engineer to lead design, development, and governance of enterprise APIs and microservices using Java, Spring Boot, and WSO2 across on‑premises and AWS.

You will guide a team of engineers, collaborate with Product Owners and Architects, and own end-to-end payment services development from initiation to settlement while ensuring security and reliability in a cloud-enabled environment.