Java Back End Developer

Criterion Tech; Dadri; Hybrid; INR 800,000 - 1,400,000; Full time

Benefits offered by this job

Modern backend technologies

Collaborative environment

Enterprise-scale exposure

Learning and growth opportunities

Job summary

Criterion Tech is seeking a skilled Java Backend Developer to design, develop, and maintain scalable backend services using Spring Boot. You will build RESTful APIs, optimize SQL queries, and ensure security and performance in a microservices environment.

Ideal candidates have strong Java fundamentals, hands-on experience with the Spring ecosystem, relational databases, and modern development practices. Collaboration with cross-functional teams is essential, and this full-time role offers

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• Strong analytical and problem-solving skills.
• Good communication and teamwork abilities.
• Experience working in Agile/Scrum environments.

Responsibilities

• Design, develop, and maintain backend services using Java and Spring Boot.
• Build and consume RESTful APIs for applications.
• Develop data access layers using Spring Data JPA and Hibernate.
• Design and optimize relational database schemas and SQL queries.
• Write clean, maintainable, and well-documented code following best practices.
• Troubleshoot, debug, and resolve production issues.
• Collaborate with frontend developers, QA engineers, and product teams.
• Participate in code reviews and ensure adherence to coding standards.
• Optimize application performance and scalability.
• Contribute to application architecture and technical design discussions.

Skills

OOP

Multithreading

RESTful APIs

Java fundamentals

Communication

Education

Bachelor's degree in Computer Science / IT

Tools

Java

Spring Boot

Spring Data JPA

Hibernate

Maven

Gradle

Git

Docker

Kubernetes

Redis

Kafka

JUnit 5

Mockito

Jenkins/GitHub Actions/GitLab CI

Job description

Java Backend Developer

[Location / Remote / Hybrid] | Full-Time

SUMMARY

We are looking for a skilled Java Backend Developer with strong experience in Spring Boot and related technologies to design, develop, and maintain scalable, secure, and high-performance backend applications. The ideal candidate should have a solid understanding of RESTful APIs, database design, and modern software development practices.

TECHNICAL SKILLS

• Java 8/11/17 features
• Object-Oriented Programming (OOP)
• Collections Framework
• Exception Handling
• Multithreading and Concurrency
• Java Streams and Lambda Expressions
• Generics
• Spring Boot
• Spring Data JPA
• Spring MVC
• Hibernate ORM
• Dependency Injection (IoC)
• Bean Lifecycle
• Spring Validation
• MySQL
• PostgreSQL
• SQL query writing and optimization
• Database normalization
• Transactions and indexing
• Entity relationship mapping
• RESTful API design
• JSON
• Postman
• API documentation (Swagger/OpenAPI)
• Maven
• Gradle
• Git
• GitHub
• GitLab
• Bitbucket
• Spring Security with JWT or OAuth2
• Microservices architecture
• Docker
• Kubernetes (basic knowledge)
• Redis or caching mechanisms
• RabbitMQ or Apache Kafka
• JUnit 5
• Mockito
• CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI)
• SonarQube
• AWS, Azure, or GCP exposure

KEY RESPONSIBILITIES

• Design, develop, and maintain backend services using Java and Spring Boot.
• Build and consume RESTful APIs for applications.
• Develop data access layers using Spring Data JPA and Hibernate.
• Design and optimize relational database schemas and SQL queries.
• Write clean, maintainable, and well-documented code following best practices.
• Troubleshoot, debug, and resolve production issues.
• Collaborate with frontend developers, QA engineers, and product teams.
• Participate in code reviews and ensure adherence to coding standards.
• Optimize application performance and scalability.
• Contribute to application architecture and technical design discussions.

QUALIFICATIONS

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• Strong analytical and problem-solving skills.
• Good communication and teamwork abilities.
• Experience working in Agile/Scrum environments.

NICE TO HAVE

• Experience with system design and scalable architectures.
• Knowledge of design patterns and SOLID principles.
• Experience with distributed systems and event-driven architecture.
• Understanding of performance tuning and application monitoring.

WHAT WE OFFER

• Opportunity to work on modern backend technologies.
• Collaborative and growth-oriented work environment.
• Exposure to scalable enterprise applications.
• Learning and career development opportunities.