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Unison Group Linkedin · Posted 3mo ago

Senior Java Backend Developer

Singapore

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Role Overview

We are looking for an experienced Senior Java Backend Developer with strong expertise in Java 17+, Spring Boot 3.x, REST API development, and Microservices Architecture. The ideal candidate will be responsible for designing, developing, deploying, and supporting scalable backend applications in a cloud environment. The role requires hands-on experience with AWS services, CI/CD pipelines, database technologies, and production support activities.

Key Responsibilities

  • Design, develop, and maintain high-performance backend applications using Java 17+ and Spring Boot 3.x.
  • Develop and integrate scalable RESTful APIs following industry best practices.
  • Build and maintain applications based on Microservices Architecture.
  • Implement secure, reliable, and scalable backend solutions.
  • Work with AWS cloud services including ECS, EC2, RDS, and CloudWatch for application deployment, monitoring, and troubleshooting.
  • Develop and manage CI/CD pipelines using GitLab and Infrastructure as Code (IaC) practices.
  • Collaborate with DevOps teams to automate build, deployment, and release processes.
  • Work with Oracle and SQL databases, including database design, queries, optimization, and troubleshooting.
  • Perform code reviews, debugging, performance tuning, and application enhancements.
  • Provide Production Support / BAU Support for business-critical applications.
  • Manage incidents, perform root cause analysis (RCA), and implement permanent fixes.
  • Collaborate with cross-functional teams including QA, DevOps, Product Owners, and Business stakeholders.

Required Skills & Experience

  • 6+ years of experience in Java Backend Development.
  • Strong hands-on experience with Java 17+.
  • Extensive experience with Spring Boot 3.x.
  • Strong understanding of REST API development and integration.
  • Proven experience working with Microservices Architecture.
  • Hands-on experience with AWS services:
    • Amazon ECS
    • Amazon EC2
    • Amazon RDS
    • Amazon CloudWatch
  • Experience with GitLab CI/CD pipelines and automation.
  • Knowledge of Infrastructure as Code (IaC) concepts.
  • Strong SQL skills with experience in Oracle databases.
  • Experience in production application support and incident management.
  • Good understanding of Agile development methodologies.
  • Strong analytical and problem-solving skills.
Good to Have

  • Experience with container technologies such as Docker/Kubernetes.
  • Knowledge of cloud security best practices.
  • Experience with monitoring and logging tools.
  • Exposure to enterprise-scale applications and high-availability systems.
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