Java Developer — Core Java | OSGi | Spring Framework

• *Job Title
• *Java Developer (Core Java + OSGi + Spring)
• *Experience
• *1 – 3 Years (Minimum 1 year hands-on experience required)
• *Employment Type**

Full-Time

• *Location**

[Onsite Delhi Office]

• *Role Summary**

We are hiring a

• *Java Developer**

with strong fundamentals in

• *Core Java**

and working knowledge of

• *OSGi modular architecture**

and

• *Spring Framework**

to develop scalable enterprise applications.

This role involves working on modular Java platforms, REST services, and CMS-driven enterprise systems.

• *Key Responsibilities
• Develop backend modules using
• *Core Java and Spring
• Build and maintain
• *OSGi bundles and services
• Develop REST APIs and backend integrations
• Participate in architecture discussions and code reviews
• Debug performance and runtime issues
• Follow clean coding and modular design practices
• Collaborate with frontend and DevOps teams
• *Mandatory Technical Skills

Candidates

• *must demonstrate practical knowledge**

of

• *Core Java (Strong Requirement)
• OOP principles (must explain with examples)
• Collections framework (Map vs List vs Set usage)
• Exception handling strategy
• Multithreading basics
• Java 8+ features (Streams & Lambda)
• Memory basics (Heap vs Stack)
• *OSGi (Required)
• Bundle lifecycle
• Service registration & consumption
• Modular architecture understanding
• Dependency management between bundles
• *Spring Framework
• Dependency Injection
• REST API development
• Configuration concepts
• Spring Boot basics
• *Tools
• Maven or Gradle
• Git
• REST API testing (Postman/Swagger)
• *Good to Have
• Experience with Jahia / AEM / Apache Sling
• Hibernate/JPA
• Microservices exposure
• Docker basics
• Authentication concepts
• *Mandatory Candidate Proof

Candidates should provide

• *at least one**

:

• GitHub repository OR
• Code sample OR
• Project explanation demonstrating:
• REST API development
• Modular Java design
• Spring usage
• *Practical Assignment
• *Task (2–3 hours):
• Create a simple REST service using Spring Boot
• Expose one endpoint
• Structure code modularly
• Demonstrate dependency injection

Mail at info@ayasya.com / hr@ayasya.com