Java Developer

FiftyFive Technologies; Jaipur; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

FiftyFive Technologies seeks an experienced Java Backend Developer to design, develop, and maintain scalable backend services. You will work with Java, Spring Boot, and microservices to build REST APIs and integrate databases like PostgreSQL, MySQL, MongoDB, and Redis.

You will implement security with Spring Security, JWT, and OAuth2, use Kafka for messaging, and follow SOLID principles. You’ll contribute to testing with JUnit/Mockito and collaborate in Agile teams deploying via

Qualifications

• Bachelor's degree in Computer Science or related field.
• Strong understanding of OOP, Design Patterns, and SOLID principles.
• Experience working in Agile/Scrum teams.
• Excellent analytical and communication skills.

Responsibilities

• Design, develop, and maintain backend applications using Java and Spring Boot.
• Develop scalable Microservices and RESTful APIs.
• Implement authentication and authorization using Spring Security, JWT, and OAuth2.
• Work with PostgreSQL, MySQL, MongoDB, and Redis.
• Integrate Apache Kafka for asynchronous messaging.
• Write clean, maintainable, and testable code following SOLID principles.
• Develop unit and integration tests using JUnit and Mockito.
• Collaborate with frontend, QA, DevOps, and product teams in Agile environments.
• Deploy applications using Docker, Kubernetes, and CI/CD pipelines.
• Monitor, troubleshoot, and optimize application performance.

Skills

Java

Spring Boot

Microservices

REST APIs

PostgreSQL

MySQL

MongoDB

Redis

Kafka

Docker

Kubernetes

CI/CD

JUnit

Mockito

Agile/Scrum

Education

Bachelor's degree in Computer Science or related field

Tools

Git

Maven

Gradle

IntelliJ IDEA

Postman

Swagger/OpenAPI

Jira

Confluence

Job description

We are looking for a skilled Java Backend Developer with 4–6 years of experience in designing, developing, and maintaining scalable backend applications. The ideal candidate should have strong expertise in Java, Spring Boot, Microservices, REST APIs, databases, cloud technologies, and DevOps practices.

Key Responsibilities

• Design, develop, and maintain backend applications using Java and Spring Boot.
• Develop scalable Microservices and RESTful APIs.
• Implement authentication and authorization using Spring Security, JWT, and OAuth2.
• Work with PostgreSQL, MySQL, MongoDB, and Redis.
• Integrate Apache Kafka for asynchronous messaging.
• Write clean, maintainable, and testable code following SOLID principles.
• Develop unit and integration tests using JUnit and Mockito.
• Collaborate with frontend, QA, DevOps, and product teams in Agile environments.
• Deploy applications using Docker, Kubernetes, and CI/CD pipelines.
• Monitor, troubleshoot, and optimize application performance.

Required Skills

• Testing: JUnit 5, Mockito, Integration Testing
• Tools: Git, Maven, Gradle, IntelliJ IDEA, Postman, Swagger/OpenAPI, Jira, Confluence

Good to Have

• Spring AI
• Prompt Engineering
• RAG
• Elasticsearch or RabbitMQ

Qualifications

• Bachelor's degree in Computer Science or related field.
• Strong understanding of OOP, Design Patterns, and SOLID principles.
• Experience working in Agile/Scrum teams.
• Excellent analytical and communication skills.

Required Skills