Senior Full Stack Java Developer

• Architect and Develop: Design, implement, and maintain high-performance backend services using Java/Golang and intuitive frontend interfaces using React.
• Technical Leadership: Provide technical guidance and mentorship to junior developers, promoting best practices and fostering a collaborative environment.
• Code Quality: Write clean, efficient, and well-documented code following industry best practices and coding standards.
• Collaboration: Work with backend developers, frontend developers, product managers, and other stakeholders to gather requirements and deliver robust solutions.
• Performance Optimization: Identify and address performance bottlenecks and scalability issues.
• Debugging and Troubleshooting: Diagnose and resolve complex issues in both backend and frontend components.
• Testing: Implement comprehensive testing strategies, including unit tests, integration tests, and end-to-end tests.
• Continuous Learning: Stay current with the latest industry trends, technologies, and best practices in full stack development.

We are looking for engineers who love to build SaaS products to join our team.

This position is for a product we have been building for 7 years now, for a long term customer of ours. The Codebase is well maintained, with a rails backend and a react frontend. 

If you are someone who has invested time into writing reusable rails or react js components/libraries, who has written ruby gems or npm packages, you feel at home working with us.

Required Knowledge:

1. How Web backends or Rails works
2. Mastery over ORMs or Active Record Migrations, Validations
3. Good knowledge of writing encapsulated business logic
4. Multitenant architecture

Great to Have

• Open source npm packages or ruby gems
• Performance tuning for Apps
• Experience with cloud platforms such as AWS
• Ruby Metaprogramming knowledge
• Functional JS

Interview Format

1. Technical Round
2. Coding Round
3. Final Round

If you crack both rounds, you get the job. In case you decline the offer for any reason, we will give you a gift voucher for spending your valuable time with us.

In case you dont crack the question, we will tell you what to learn so that next time you will have a good chance :)

Note: We are looking for real, hands-on experience—not certifications or copy-paste portfolios. Selected candidates will be given a short real-world task to evaluate skills before interview.

Key Responsibilities

• Design, build, and maintain scalable full-stack applications using MongoDB, Postgresql, Express.js, React.js, and Node.js
• Develop RESTful APIs and integrate them with frontend systems
• Collaborate with designers and project managers for timely project delivery
• Optimize code for performance and scalability
• Troubleshoot, debug, and upgrade applications as needed
• Follow Git-based workflows for version control

Must-Have Skills

• Strong hands-on experience in:
• React.js with hooks, context API, component architecture
• Node.js with Express.js
• MongoDB (CRUD operations, schema design) & Postgresql
• API development and integration
• Strong JavaScript fundamentals (ES6+)
• Basic understanding of deployment (e.g., cPanel, Vercel, Heroku, or VPS)
• Git and GitHub for code versioning

Good-to-Have Skills

• Knowledge of Redux or any other state management tools
• Experience with Next.js or TypeScript
• Familiarity with Tailwind CSS or Material UI
• Experience integrating third-party APIs (e.g., payment gateways, social logins)

Who Should Apply

• You’ve worked on real client projects or have built and shipped working applications.
• You are disciplined and take ownership without constant follow-up.
• You are not here to "fake it till you make it"—you’re here to grow with a real team.

Job Description: 

• Experience in Core Java, Spring Boot. 

• Experience in microservices. 

• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns. 

• Should be able to analyze, design, develop and test complex, low-latency client-facing applications. 

• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2 

• Good knowledge of multi-threading 

• Basic working knowledge of Unix/Linux 

• Excellent problem solving and coding skills in Java 

• Strong interpersonal, communication and analytical skills. 

• Should be able to express their design ideas and thoughts. 

• Building interactive consumer data from multiple systems and RESTfully abstracting to the UI through a Node.js backend
• Define code architecture decisions to support a high-performance and scalable product with a minimal footprint
• Address and improve any technical issues
• Collaborate well with engineers, researchers, and data implementation specialists to design and create advanced, elegant and efficient systems

• Bring in a "can-do" attitude
• Passion towards technology and software engineering - open source, pet projects, conference talks, getting better at writing clean code.
• Participate in a highly fluid environment applying agile software development principles.
• Carry out unit tests and other quality control mechanisms to inform and validate the designs and code
• Work with product owner/BAs to bring an end to end perspective of the problem.
• Ability to ask the right questions and communicate your ideas with clarity.
• Ability to collaborate with various stakeholders and take complete ownership.
• Participate actively in building one of the most impactful organizations in retail technology.

• Quickly adapt to our startup environment which is both demanding and fast-paced (but is also a lot of fun).
• Eager in learning new concepts, technologies and be productive in short time.
• Convert a raw idea into usable real-life software products Write modular, readable and maintainable code.
• Good understanding and working knowledge of technologies worked.
• Demonstrate good problem solving skills
• Own and be able to manage a small to medium sized modules.
• Demonstrate ability to guide and coach a new team member or fresher.