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

NEXTERA SOFTWARE SERVICES PTE. LTD.; Singapore; Hybrid; SGD 120,000 - 180,000; Full time

Job summary

NEXTERA SOFTWARE SERVICES PTE. LTD. is seeking a Senior Java Backend Developer with 6+ years of hands-on experience to design, build, and support high-throughput digital banking applications for DBS Bank.

You will architect microservices ecosystems, implement distributed backend services using Java, Spring Boot, and cloud-native frameworks, and ensure secure, scalable performance in a BFSI context. Expect to work in an on-site/hybrid setup, collaborating in an Agile/Scrum team to deliver robust

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).
• Core Tech Stack: Java (8/11/17), Spring Boot, Spring Cloud, Spring Security, and JPA / Hibernate.
• Architecture: Strong hands‑on experience with Microservices Architecture and RESTful API design.
• Databases: Relational (Oracle, MariaDB, PostgreSQL) and NoSQL (Redis, MongoDB).
• Messaging & Async: Kafka, RabbitMQ, or JMS for real‑time messaging.
• Testing: Unit, integration, and performance testing with JUnit, Mockito, and JMeter.

Responsibilities

• Microservices Development: Architect, build, and deploy resilient backend microservices with Java (11/17) and Spring Boot.
• API Integration: Design and implement RESTful APIs, SOAP web services, and API Gateways for core banking systems.
• Event-Driven Architecture: Implement event streams, asynchronous processing, and messaging using Kafka, RabbitMQ, or IBM MQ.
• Data Persistence & Security: Manage data models across Oracle, PostgreSQL, MariaDB and NoSQL; ensure encryption at rest and in transit.
• Banking Security Compliance: Integrate Spring Security, OAuth 2.0, OpenID Connect, JWT, and mTLS per MAS standards.
• Performance Tuning & Debugging: Analyze threads, fix memory leaks, optimize DB queries, and tune latency with JMeter/APM tools.
• CI/CD & DevOps Automation: Collaborate in Agile squads; CI/CD with Git, Jenkins, Maven/Gradle, SonarQube, Docker, Kubernetes.

Skills

Java backend

Microservices

REST API design

Security concepts

Performance optimization

Tools

Spring Boot

Spring Cloud

Spring Security

JPA/Hibernate

Kafka

RabbitMQ

IBM MQ

Oracle

PostgreSQL

MariaDB

MongoDB

Redis

JMeter

JUnit

Mockito

Git

Jenkins

Docker

Kubernetes

Maven/Gradle

SonarQube

Job description

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.