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PERSOL Singapore Pte Ltd

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Senior Java Developer

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Summary

Senior backend engineer building and maintaining Java applications on the Spring stack — designing RESTful microservices, working with SQL/NoSQL databases, messaging (Kafka/RabbitMQ), and cloud deployment with Docker/Kubernetes, CI/CD, and test automation.

Responsibilities

  • Create solutions which delight customers, abstracting complexity
  • Design, build, and maintain efficient, reusable, and reliable code
  • Ensure the best possible performance, quality, and responsiveness of the applications
  • Identify bottlenecks and bugs, and devise solutions to these problems
  • Ensure excellent code quality, and automation.
  • Solve high severity production issues on priority

Skills

  • Solid experience with Spring Boot, Spring MVC, Spring Data, and dependency injection.
  • Experience designing and consuming RESTful APIs.
  • Knowledge of SQL and relational databases (MySQL, PostgreSQL, Oracle, etc.).
  • Familiarity with NoSQL stores (MongoDB, Redis) is a plus.
  • Experience with build tools such as Maven or Gradle.
  • Understanding of microservices architecture and distributed systems.
  • Familiarity with logging, monitoring, and profiling tools.
  • Working knowledge of Git and CI/CD pipelines.
  • Knowledge of concurrency patterns in Java
  • Experience with databases, cache and messaging.
  • Experience with Spring Security or OAuth2.
  • Exposure to Kafka, RabbitMQ, or other messaging systems.
  • Cloud experience (AWS, Azure, GCP).
  • Docker, Kubernetes, and container orchestration basics.
  • Test automation using JUnit, Mockito, or similar frameworks.
  • Knowledge of API gateways and service mesh architectures.
  • Understanding fundamental design principles behind a scalable application
  • Basic understanding of the class loading mechanism in Java
  • Creating database schemas that represent and support business processes
  • Implementing automated testing platforms and unit tests
  • Proficient understanding of code versioning tools, such as Git
  • Familiarity with build tools such as Github, Maven and Gradle
  • Familiarity with continuous integration
  • API-first development, CI/CD automation, and DevSecOps

What you have

  • At least 6 years of Strong experience in building apps, preferably on Java - Spring stack
  • Experience working on cloud-based SaaS/PaaS products
  • Understanding of design patterns, algorithms and data structures
  • Articulation of a solution and its benefits / shortcoming with alternatives
  • Ability to transition between programming languages and tool sets

Skills

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