Backend Engineer (Java Microservices - Card & Unsecured Loan)

TRINITY CONSULTING SERVICES PTE. LTD.; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

TRINITY CONSULTING SERVICES PTE. LTD. in Singapore seeks a skilled backend developer to design, build, and deploy scalable services using Java and Spring Boot.

You will shape RESTful APIs and microservices, work with OpenAPI specifications, and collaborate with cross-functional teams in an enterprise setting. The role emphasizes robust data handling with PostgreSQL, MariaDB, or Oracle, containerized deployments with Docker and Kubernetes/OpenShift, and modern testing with JUnit 5, Mockito, and

Qualifications

• 3-6 years hands-on backend development in enterprise environments.
• Strong proficiency in Java (11/17/21) and Spring Boot (Spring Web, Security, Data).
• Experience designing, developing, deploying RESTful APIs and microservices with OpenAPI/Swagger.
• Relational databases: PostgreSQL, MariaDB, Oracle; SQL optimization, indexing, and transaction management.
• Hands-on with Docker and Kubernetes/OpenShift.
• Automated testing with JUnit 5, Mockito, and Testcontainers.
• Experience in Agile/Scrum or Kanban.
• Strong analytical, problem-solving, communication, and teamwork skills.

Skills

Java

Spring Boot

REST APIs

Microservices

OpenAPI/Swagger

SQL

Testing

Agile/Scrum

Communication

Teamwork

Tools

Docker

Kubernetes/OpenShift

Apache Kafka

RabbitMQ

Job description

Job Requirements

• 3-6 years of hands-on backend development experience in enterprise environments.
• Strong proficiency in Java (11/17/21) and Spring Boot (Spring Web, Security, Data).
• Proven experience designing, developing, and deploying RESTful APIs and microservices using OpenAPI/Swagger.
• Strong knowledge of relational databases (PostgreSQL, MariaDB, Oracle), SQL optimization, indexing, and transaction management.
• Hands-on experience with Apache Kafka or RabbitMQ for event-driven messaging.
• Practical experience with Docker and Kubernetes/OpenShift.
• Proficiency in automated testing using JUnit 5, Mockito, and Testcontainers.
• Experience working in Agile/Scrum or Kanban environments.
• Strong analytical, problem-solving, communication, and teamwork skills.

Preferred Skills (Added Advantage)

• Experience with legacy Java EE/J2EE applications (EJB, Servlets, SOAP/WSDL, WebSphere, WebLogic, JBoss).
• Banking, Financial Services, or FinTech experience, particularly in credit cards and unsecured lending .
• Knowledge of loan origination, credit bureau integration, revolving credit lines (Cashline), and Straight-Through Processing (STP).
• Familiarity with microservice resilience patterns, API contract testing, and distributed tracing (Resilience4j, Pact, OpenTelemetry, Jaeger).