Java Developer

Job Title: Java Backend Developer 

Location: Bangalore  

Experience: 3–6 years 

Mode: Full-time 

✨ Job Summary 

We are looking for a skilled Java Backend Developer to join our engineering team. You will be responsible for building the backend services and APIs that power our web and mobile applications. 

✅ Responsibilities: 

• Design and develop RESTful APIs using Java and Spring Boot 
• Write reusable, testable, and efficient backend code 
• Integrate databases, caching layers, and data storage solutions 
• Implement security and data protection best practices 
• Monitor and optimize application performance 
• Work with DevOps tools to manage builds and deployments 
• Participate in code reviews and agile ceremonies 

🧠 Required Skills: 

• Strong programming experience in Java 8+ 
• Proficient in Spring Boot, Hibernate, JPA 
• Hands-on with REST APIs, JSON, Postman 
• Solid understanding of SQL and relational databases (MySQL/PostgreSQL) 
• Experience with Maven/Gradle, Git, Jenkins 
• Familiarity with Docker, Kubernetes, or AWS is a plus 
• Understanding of OOP, design patterns, and microservice architecture 

🎓 Qualifications: 

• Bachelor's degree in Computer Science, Engineering, or a related field 
• 3+ years of backend development experience 

💼 Good to Have: 

• Knowledge of NoSQL (MongoDB, Redis) 
• Experience with CI/CD pipelines 
• Familiarity with testing tools like JUnit or Mockito 

Job Description:

• Proficient in software Design and development and familiar with technologies - Java, Java-J2EE, Spring Boot, Ajax, REST API, Micro services etc.
• Working knowledge of any SQL database (MySQL, Oracle etc)
• Working knowledge of No-SQL database (Mongo or Dynamo DB)
• Experience in unit testing using Junit or Mockito
• Experience in designing and architecting systems with high scalability and performance requirements.
• Ability to design infrastructure for performance evaluation and reporting of cloud-based services, namely AWS
• In depth knowledge of key AWS services like EC2, S3, Lambda, CloudWatch etc..
• Certification on AWS architecture desirable
• Excellent communication skills
• Ability to effectively articulate technical challenges and solutions
• Skilled in interfacing with internal and external technical resources
• Good in debugging problems and mentoring teams on technical front

Roles and Responsibilities:

• Participate and contribute in platform requirements/story development.
• Contribute to the design, coding for the requirements/stories and also participate in code and design reviews.
• Develop use cases and do unit test cases and execute them part of continuous integration pipeline.
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What kind of work will you get?

We are looking for a java developer.

Examples of technical tasks:

Working on our backend SDK to implement APIs that will be consumed by the frontend widgets

Designing APIs for different auth recipes

Architecting auth flows

You will also be given non technical tasks like product brain storming, competitor analysis and writing documentation.

Note: Compensation is as per the applicant's geography

Requirements

Well versed in java with 2+ years of professional experience

Familiar with and comfortable working with Web frameworks like FastAPI, Django and Flask

Familiar with HTTP networking in java

Strong understanding of async and sync modes in java

Bonus:

Contributed to open source, or have your own open source repo with a community and many github stars

Built an in-house authentication or authorization solution or worked with solutions such as Keycloak, Auth0, Ory, Okta etc

If you like our project, please star us on https://github.com/supertokens/supertokens-core">Github

Note: Compensation is as per the applicant's geography

Recruitment Process

Initial Filtering

Apply

Technical Interview (1/2) - 1.5 hours

Discussion on your past work, this will involve sharing your work (code and output) via screen share

Architecture discussion and general programming related live code problems.

You will be allowed to use Google throughout the interview and you will be required to have screen share on.

This call will be with the CTO

Technical Interview (2/2) - 1.5 hour

This will involve a discussion to assess the breadth and depth of your technical knowledge and general questions on various technical topics.

You will not be asked to write any code

This call will be with the CTO

Chat with the Co-Founder - 1 hour

This call will involve a general discussion to assess culture fit

• Using the latest technologies to solve real problems for our customers at a massive scale
• Collaborating closely with other engineers as a valuable member of a cross-functional team
• Sharing your knowledge and building creative solutions while helping the team evolve best practices
• Designing, developing, and deploying backend services with a focus on high availability, low latency, and scalability
• Taking end-to-end responsibility for the services that are owned by your team, including taking part in an on-call rotation

Who you are

• A minimum of B.S. degree in Information Technology or Computer Science or 5+ years in a similar position
• Able to adapt, change and grow quickly as we scale the organization
• Passionate about engineering practices like agile, continuous delivery, test-driven development, traceability, and observability
• Growth mentality is curious and not afraid to be experimental.
• You share your ideas and continuously improve yourself and the team around you
• Solid experience as an Engineer designing, developing and maintaining API driven solutions
• Strong communication skills, high integrity, and great attention to detail

You’ll get to work with:

• Docker and Kubernetes
• Go and/or PHP
• PostgreSQL, Elastic Search, RabbitMQ
• Memcache, Redis
• Microservices architecture
• ELK, Jaeger, Prometheus & Grafana

Role Description:

As a Lead Backend Engineer , you will be responsible for designing and deploying scalable, highly available, and fault-tolerant systems for Radiusagent. Experience as a Tech Lead, managing tasks with back-end engineers while coding themselves will be a bonus point for the ideal candidate.

Responsibilities will include-

• You will contribute to all aspects of an agile software development lifecycle including design, architecture, development, documentation, testing, and operations.
• You will build cutting-edge scalable systems by writing simple and efficient code.
• You will push your design and architecture limits for new product development.
• You will ensure compliance with the build/release and configuration management process.

Skills needed:

• be able to design and build modules from ground up
• proficient in any one programming language out of php/golang/node/python/javascript/java/ruby and ability to pick up others
• experience with mysql/postgres/mongodb/couchdb
• experience  with redis/memcached
• experience with rabbitmq / kafka
• experience in having written cron jobs, troubleshooting downtime
• ability to work with ambiguous requirements
• good understanding of OS concepts

Nice to haves:

• experience with managing VMs' on aws/gcp/digitalocean 
• experience with docker/kubernetes
• experience elasticsearch or lucene