Java Backend Developer(End clients => IBM, DBS bank)

Job Title:

Senior Java Backend Developer – Microservices

Experience Level:

6+ Years

Domain Requirement:

Banking & Financial Services (Mandatory)

Location:

On-site / Hybrid (As per client agreement)

Role Overview

We are seeking a

Senior Java Backend Developer

with

6+ years of hands‑on software development experience

to design, build, and support high‑throughput, mission‑critical digital banking applications for

DBS Bank . The candidate will be key to architecting microservices ecosystems, building distributed backend services, and securing high‑volume transactional systems using

Java ,

Spring Boot , and cloud‑native frameworks. Prior development experience in a retail, corporate, or FinTech banking domain is strictly required.

Key Responsibilities

Microservices Development:

Architect, build, and deploy resilient, loosely coupled backend microservices using

Java (11/17)

and

Spring Boot .

API Integration:

Design and implement RESTful APIs, SOAP web services, and API Gateways for seamless integration with DBS core banking systems and third-party financial services.

Event-Driven Architecture:

Implement event streams, asynchronous processing, and message queues using

Apache Kafka ,

RabbitMQ , or

IBM MQ .

Data Persistence & Security:

Manage data models across relational (Oracle, PostgreSQL, MariaDB) and NoSQL (MongoDB, Redis) databases using JPA/Hibernate, maintaining strict encryption at rest and in transit.

Banking Security Compliance:

Integrate Spring Security, OAuth 2.0, OpenID Connect, JWT, and mTLS protocols to comply with MAS (Monetary Authority of Singapore) and bank threat‑mitigation standards.

Performance Tuning & Debugging:

Perform thread analysis, memory leak fixes, DB query optimization, and latency tuning using tools like Apache JMeter and APM monitors.

CI/CD & DevOps Automation:

Collaborate in an Agile/Scrum squad setup to run continuous integration/delivery pipelines using Git, Jenkins, Bitbucket, Maven/Gradle, SonarQube, Docker, and Kubernetes.

Mandatory Experience & Qualifications

Experience:

Minimum

6+ years

in enterprise‑level Java backend software development.

Domain Expertise:

Must have prior hands‑on experience in Banking or Financial Services (BFSI) , working on domain features such as payment gateways, core banking, trade finance, credit cards, or digital transfers.

Core Tech Stack:

Advanced proficiency in

Java (8/11/17) ,

Spring Boot ,

Spring Cloud ,

Spring Security , and

JPA / Hibernate .

Architecture:

Strong hands‑on experience with

Microservices Architecture , Design Patterns, RESTful API design, and distributed systems design.

Databases:

Solid knowledge of relational databases (Oracle, MariaDB, PostgreSQL) alongside NoSQL solutions (Redis, MongoDB).

Messaging & Async:

Practical experience with Kafka, RabbitMQ, or JMS for real‑time messaging.

Testing:

Proficiency in unit, integration, and performance testing using JUnit, Mockito, and JMeter.

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