About the company- FPL Technologies
Credit cards haven't changed much for over half a century so our team of seasoned bankers, technologists, and designers set out to redefine the credit card for you - the consumer. The result is OneCard - a credit card reimagined for the mobile generation. OneCard is India's best metal credit card built with full-stack tech. It is backed by the principles of simplicity, transparency, and giving back control to the user.
The Engineering Challenge
“Re-imaging credit and payments from First Principles”
Payments is an interesting engineering challenge in itself with requirements of low latency, transactional guarantees, security, and high scalability. When we add credit and engagement into the mix, the challenge becomes even more interesting with underwriting and recommendation algorithms working on large data sets. We have eliminated the current call center, sales agent, and SMS-based processes with a mobile app that puts the customers in complete control. To stay agile, the entire stack is built on the cloud with modern technologies.
Check out our apps here:
OneCard (Best credit card app) : http://www.getonecard.app/">www.getonecard.app
OneScore (Over 10 million downloads): http://www.onescore.app/">www.onescore.app
JD- Senior Software Engineer – Backend
Opportunity:
Create a consumer facing credit card product that will be used by millions of users.
What you will do:
- Be a part of our backend for frontend/ credit card processing engineering teams to build the best homegrown credit card stack.
- Partner with the product teams to understand the product features and specifications, translate them into high level and low-level design.
- Work with frontend and backend developers to build out a customer-centric experience that will constantly evolve.
- Respond to support team tickets as needed to resolve bugs and issues.
- Participate in contributing ideas, updates, and product development areas to the team.
Experience Range:
5- 7 years with technical hands-on experience in building large-scale B2C applications catering to millions of users. Previous experience in building scalable products is a must.
Technical Expertise:
- Strong insight into Java programming language (Class loading, Memory Management, Transactions, Executors, Lambdas and Streams).
- Experience in distributed technologies, real-time, high throughput and low latency systems.
- Hands-on prior experience with scalable Cloud based architectures.
- Experience in one or more frameworks like Spring is a plus but not required.
- Proficiency in data structures & algorithms.
- Strong problem solving and analytical skills.
- Any experience in payments is a plus.

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Job Summary:
We are looking for a highly skilled and experienced Java Backend Developer with 4.5+ years of hands-on experience in backend development, system design, and API integration. You’ll play a key role in designing and building high-performance backend systems that are scalable, secure, and reliable. As a core member of the engineering team, you’ll collaborate closely with product owners, architects, and other developers to deliver quality solutions.
Responsibilities:
- Design and develop backend components, REST APIs, and microservices using Java and Spring Boot.
- Contribute to the architectural decisions and system design discussions.
- Write clean, efficient, and testable code following best practices.
- Optimize application performance, scalability, and reliability.
- Integrate third-party APIs and work with external systems.
- Participate in code reviews, mentor junior developers, and support the team’s technical growth.
- Work closely with DevOps to support CI/CD pipelines and deployments.
- Troubleshoot and resolve complex issues in production and non-production environments.
- Keep up with industry trends and advocate for best practices in backend development.
Required Skills:
- 4.5+ years of hands-on experience in backend development with Java (Java 8 or above).
- Strong expertise in Spring Framework (Spring Boot, Spring MVC, Spring Data).
- Experience designing and consuming RESTful APIs and working with microservices architecture.
- Solid understanding of relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
- Proficient with version control systems like Git and tools like Maven or Gradle.
- Familiarity with Docker, containerization, and cloud platforms (AWS/GCP/Azure).
- Experience with unit testing and integration testing (JUnit, Mockito, etc.).
- Good knowledge of software design principles, data structures, and algorithms.
- Excellent problem-solving skills and attention to detail.
- Ownership of complete backend code.
- Full stack development on cutting edge technology in Fintech domain.
You should Have :
- Server Side languages knowledge: Node.js and express.js is the first choice, Python, Java
- Solid experience working with databases, especially relational DB.
- Solid experience with version control (Git or Bitbucket or SVN).
- B.E. in Computer Science or Graduate/PG degree in Computer Science (this is optional, as we are more interested in your abilities and experience over a paper degree).
- Any experience working with real time projects in backend with node.js and express.js
Responsibilities:
- Lead the development of the back-end systems for our first product.
- Build reliable, secure and performant back-end systems.
- Drive test coverage and continuous delivery automation within the team.
- Mentor and provide feedback to teammates.
Requirements:
- 3+ years of software development experience.
- Strong computer science fundamentals.
- Deep and wide knowledge of Java ecosystem.
- Can write code that is readable, maintainable, secure and performant.
- Know the importance of tests and how to approach writing different types of tests.
- Good intuition for REST API design.
- Deep understanding of relational databases, transactions, entity-relationship modelling.
- Comfortable writing highly concurrent systems.
- Experienced in using profilers, tuning garbage collection, optimising SQL queries.

- Strong hands on in Core Java, OOPS, Exception handling, Multi-Threading, Generics and design patterns.
- Proficient in designing and developing web applications using Java/JEE
- Working experience in Spring Boot, Spring Integration and REST Web services
- Exposure to UI technologies/frameworks like JavaScript, React JS , Flux and knowledge of CSS, HTML etc
- Build tools like Maven.
- Should possess good communication skills and a go getter attitude.
- Good in debugging code through eclipse and browsers
- Should be capable to work independently. Desirable
- Experience in any Continuous Integration/Delivery tools like GIT, Docker, Jenkins, Ansible
- Working knowledge of database like Oracle and application server like Tomcat, WebLogic.
- Knowledge of Linux
- Exposure to any test automation technologies such as Selenium, Fitnesse, Mockito, Junit, any other testing frameworks
- Candidate must to have exposure to working in a fast-paced environment using Agile methodologies
- A person with technical thrust who keeps him up to date with latest technology trends, practices, patterns etc. Knowledge of Open Source tools and technologies
Qualification & Experience:
- Bachelor of Engineering, preferably in Computer Science/or related fields or Masters, from a premier college
- 2 to 6 years overall software development experience
- Proven hands-on Software Development experience
- Ability to work with an agile mindset
- Having a polyglot mindset to think beyond one programming language/framework to choose the right tech stack for the right problem and exhibit learnability to pick up new technologies
- Proven working experience in Java development/Python development with reasonable exposure to Python/Java respectively or willingness to learn Python/Java
- Hands on experience in designing and developing applications using Java EE platforms/Python Frameworks
- Object Oriented analysis and design using common design patterns
- Good Understanding of Data Structures & Algorithms
- Hands on multi-threading
- Experience in the Relational Databases, SQL and ORM technologies (e.g. JDBC, JPA2, Hibernate, Django ORM)
- Experience with test-driven development







