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Wissen is a global technology consulting and software engineering firm specializing in digital transformation and custom software development. Founded in 2000, the company delivers end-to-end technology solutions across key sectors, including banking and financial services, healthcare, telecommunications, and retail. Its core offerings span application modernization, cloud architecture, artificial intelligence and machine learning, big data analytics, DevOps, and quality assurance.

We are looking for an experienced Java Developer with 5-9 years of hands-on experience in designing, developing, and maintaining scalable enterprise applications. The ideal candidate should have strong expertise in Java, Spring Boot, microservices, REST APIs, databases, and modern software development practices.

Responsibilities:

  • Design, develop, test, and maintain high-quality Java applications.
  • Develop scalable and robust Spring Boot and microservices applications.
  • Build and integrate RESTful APIs with internal and external systems.
  • Participate in requirement analysis, technical design, development, testing, and deployment.
  • Write clean, maintainable, reusable, and efficient code.
  • Troubleshoot application issues and provide root-cause analysis.
  • Work closely with product managers, business analysts, QA engineers, DevOps teams, and other developers.
  • Perform code reviews and ensure adherence to coding standards and best practices.
  • Optimize application performance, scalability, and reliability.
  • Develop unit and integration tests and ensure good test coverage.
  • Participate in Agile/Scrum ceremonies and contribute to continuous improvement.
  • Mentor junior developers and provide technical guidance where required.

Requirements:

  • 5-9 years of professional experience in Java development.
  • Strong knowledge of Core Java, Java 8/11/17+, OOP, Collections, Multithreading, and Exception Handling.
  • Strong hands-on experience with Spring Framework / Spring Boot.
  • Good experience developing microservices architecture.
  • Strong understanding of REST APIs and web services.
  • Experience with Hibernate/JPA.
  • Strong SQL knowledge and experience with databases such as Oracle, MySQL, or PostgreSQL.
  • Experience with Git and version control systems.
  • Good understanding of Maven/Gradle.
  • Experience with unit testing frameworks such as JUnit and Mockito.
  • Understanding of Agile/Scrum development methodologies.
  • Strong problem-solving and analytical skills.
  • Excellent communication and collaboration skills.

Good to Have:

  • Experience with Kafka/RabbitMQ or other messaging systems.
  • Knowledge of Docker and Kubernetes.
  • Exposure to AWS, Azure, or GCP.
  • Experience with CI/CD pipelines and DevOps practices.
  • Knowledge of Redis or other caching technologies.
  • Experience with cloud-native application development.
  • Exposure to monitoring and logging tools such as ELK, Grafana, or Prometheus.

Preferred Candidate Profile:

  • The ideal candidate is a strong individual contributor who can independently handle development tasks, understand complex business requirements, design technical solutions, and work effectively in a collaborative Agile environment.

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