Senior Java Developer

Radius Ois; Khordha; On-site; INR 700,000 - 1,200,000; Full time

Job summary

Radius Ois is seeking a skilled Java Developer located in Khordha, Odisha. The role requires 3-5 years of experience in building scalable backend systems and real-time applications. Ideal candidates will design high-performance systems and develop AI innovations, collaborating across various teams. Key skills needed include Spring Boot, Hibernate, and multithreading. Join us to shape the future of customer experience technology with cutting-edge, intelligent solutions.

Qualifications

• 3–5 years of experience in developing scalable backend systems
• Strong problem-solving mindset and ability to work collaboratively
• Good understanding of AI technologies and their implementation

Responsibilities

• Design and develop scalable, high-performance backend systems
• Build and maintain RESTful APIs using Spring Boot
• Develop AI-powered features like chatbots and automation tools

Skills

Spring Boot

Hibernate

Multithreading & Concurrency

RESTful APIs

Socket Programming

Generative AI concepts

OOP

Education

Bachelor’s degree in Computer Science / IT or related field

Tools

Git

JUnit

Jenkins

Job description

RADIUS is an AI-powered Omnichannel Interaction System designed to transform customer experience across enterprises. It seamlessly integrates voice, chat, email, social, and messaging channels into a unified platform, enabling organizations to deliver intelligent, real-time, and personalized customer engagement at scale.

Role Overview

We are looking for a skilled Java Developer with 3–5 years of experience to build scalable backend systems and real-time applications. This role also offers the opportunity to work on cutting-edge AI-driven capabilities, including generative AI integrations. You will play a key role in designing high-performance systems, developing intelligent features, and collaborating across product, AI, and DevOps teams.

Key Responsibilities

• Design and develop scalable, high-performance backend systems
• Build and maintain RESTful APIs using Spring Boot
• Develop real-time communication systems using WebSocket and Socket Programming
• Implement efficient data access layers using JDBC and Hibernate (JPA)
• Apply multithreading and concurrency to optimize system performance
• Develop AI-powered features such as chatbots and automation tools
• Design and implement RAG (Retrieval-Augmented Generation) pipelines
• Integrate LLMs and external AI APIs into backend services
• Optimize system performance, scalability, and reliability
• Troubleshoot production issues and perform root cause analysis
• Mentor junior developers and contribute to architecture discussions
• Collaborate with Product, AI/ML, and DevOps teams

Core Technical Skills

• Spring Boot, Spring MVC
• Hibernate, JPA
• OOP, Collections, Exception Handling
• Multithreading & Concurrency:
  • Thread lifecycle
  • Synchronization & locks
  • Executors & thread pools
  • Atomic variables, volatile
  • Thread safety, race conditions, deadlocks

Real-Time & Networking

• Socket Programming (TCP/IP)
• Java Sockets (Socket, ServerSocket)
• WebSocket protocol
• Spring WebSocket / STOMP

Generative AI & Advanced Capabilities

• Understanding of Generative AI concepts
• Experience or knowledge of RAG architecture
• Working with embeddings and vector search
• Semantic / similarity search implementation
• Integration with LLM APIs (e.g., OpenAI)
• Context handling and token optimization

APIs & Tools

• REST APIs, JSON, HTTP/HTTPS
• Git (GitHub / GitLab), SVN

Nice to Have Skills

• Microservices and distributed systems
• Spring Security
• Event-driven / asynchronous architecture
• Unit testing (JUnit, Mockito)
• CI/CD (Jenkins, GitHub Actions)
• Redis / caching
• LangChain or similar frameworks
• Python for AI workflows

What Makes You a Great Fit

• Strong problem-solving mindset
• Bachelor’s degree in Computer Science / IT or related field
• Ability to design scalable and intelligent systems
• Good communication and collaboration skills
• Ownership and mentorship attitude
• Adaptability to evolving AI technologies

Ready to build intelligent, scalable systems and work at the intersection of backend engineering and AI? Join RADIUS and shape the future of customer experience technology.