Senior Java Developer

quantum infotech solutions pte. ltd.; Singapore; On-site; SGD 120,000 - 170,000; Full time

Job summary

quantum infotech solutions pte. ltd. seeks experienced Senior Java Backend Developers to design, build, and maintain high-throughput digital banking applications.

You will work within Agile delivery teams to develop scalable microservices and resilient API platforms supporting critical banking services. Applicants should have 8+ years in Java backend development, strong Java 8/11/17, Spring Boot/Spring Security, and hands-on experience with Kafka, Docker, Kubernetes, and databases like Oracle,

Qualifications

• Bachelor's degree in CS/IT/SE or related field.
• Minimum 8 years hands-on Java backend experience.
• Proficient with Java 8/11/17, Spring Boot, Spring Security, Spring Data JPA, Hibernate.
• Experience with AWS or Azure cloud platforms.
• Experience with microservices, REST APIs, distributed systems.
• Experience with Kafka, RabbitMQ, IBM MQ or JMS.
• Strong knowledge of Oracle DB, PostgreSQL, Redis, MongoDB.
• Familiarity with Docker, Kubernetes, CI/CD practices.

Responsibilities

• Design, develop, and deploy scalable microservices in Java.
• Build secure RESTful APIs and integrate with core banking systems.
• Implement event-driven solutions using Kafka, RabbitMQ, or IBM MQ.
• Optimize database performance with Oracle, PostgreSQL, Redis, and MongoDB.
• Maintain CI/CD pipelines with Git, Jenkins, Maven/Gradle, Docker, and Kubernetes.
• Perform code reviews, testing, production support, and performance optimization.

Skills

Java Backend Development

Spring Framework

Microservices Architecture

REST APIs

Distributed Systems

CI/CD

Cloud: AWS/Azure

Database Design

Code Reviews & Testing

Production Support

Education

Bachelor's Degree in CS/IT/SE

Tools

Kafka

RabbitMQ

IBM MQ

JMS

Oracle DB

PostgreSQL

Redis

MongoDB

Docker

Kubernetes

Git

Jenkins

Maven/Gradle

Spring Boot

Job description

We are seeking experienced Senior Java Backend Developers to design, build, and maintain high-throughput, mission-critical digital banking applications. The selected candidates will work within Agile delivery teams to develop scalable microservices and resilient API platforms supporting critical banking services.

Key Responsibilities

• Design, develop, and deploy scalable Microservices using Java 11/17, Spring Boot, and Spring Cloud.
• Build secure RESTful APIs and integrate backend services with core banking systems, payment gateways, and third-party financial services.
• Implement event-driven solutions using Apache Kafka, RabbitMQ, or IBM MQ.
• Optimize database performance and design solutions leveraging Oracle, PostgreSQL, Redis, and MongoDB.
• Develop and maintain CI/CD pipelines using Git, Bitbucket, Jenkins, SonarQube, Maven/Gradle, Docker, and Kubernetes.
• Perform code reviews, application testing, production support, and performance optimization.

Mandatory Skills

• Bachelor's Degree in Computer Science, Information Technology, Software Engineering, or a related discipline.
• Minimum 8 years of hands-on experience in Java Backend Development.
• Strong expertise in Java 8/11/17, Spring Boot, Spring Security, Spring Data JPA, and Hibernate.
• Experience in AWS / Azure Cloud.
• Experience with Microservices Architecture, REST APIs, Design Patterns, and Distributed Systems.
• Hands-on experience with Kafka, RabbitMQ, IBM MQ, or JMS.
• Strong knowledge of Oracle DB, PostgreSQL, Redis, and MongoDB.
• Experience with Docker, Kubernetes, Git, Jenkins, Maven/Gradle, and CI/CD practices.
• Prior Banking, Financial Services, or FinTech experience is mandatory.