Debarshi Gupta

I'm

About

Know Me Better

I'm Debarshi Gupta, a Software Development Engineer with around three years of experience in building scalable, production-grade systems using Java, Spring Boot, microservices, and REST APIs. I've previously worked at Cognizant and currently work at Juspay, where I contribute to high-impact backend systems. I have a strong foundation in system design and full-stack fundamentals, and I'm driven by continuous learning, ownership, and building reliable software that creates real-world impact.

Birthday: 06 November 2000
Phone: 7044837799
City: Kolkata, West Bengal
Email: debarshigupta47@gmail.com

Interests

What I'm Passionate About

Software Engineering

Database

Computer Vision

Natural Language Processing

Web Development

Visualization

Algorithms

Image Processing

Education

Academic Background

B.Tech - Computer Science

August 2018 - July 2022

Relevant Coursework

Data Structures & Algorithms
Database Management Systems
System Design
Networking
Operating Systems

Indian School Certificate - XII

May 2017 - April 2018

Relevant Coursework

Computer Science
Physics
Chemistry
Mathematics
English

Certifications

Professional Credentials

Amazon Web Services

Microsoft Azure

Spring Boot Development

Angular

Web Analytics

Experience

Professional Journey

JUSPAY

Software Development Engineer

November 2024 - Present

Developed and optimized Hyperswitch, Juspay's payment orchestration platform, significantly improving transaction processing speed, reliability, and fault tolerance.
Implemented seamless integration of 8+ payment gateways, enabling support for multiple payment methods and ensuring high compatibility across merchants and platforms.
Improved system performance and scalability by identifying bottlenecks, optimizing critical flows, and implementing efficient architectural and code-level solutions.
Enhanced code coverage to ~95% by writing comprehensive unit and integration test cases, improving system reliability and long-term maintainability.
Actively contributed to code quality and maintainability through rigorous code reviews, adherence to best practices, and clear technical documentation.
Designed and developed RESTful APIs for payment flows, ensuring secure, low-latency, and high-throughput transaction handling.
Worked closely with cross-functional teams (product, QA, and operations) to deliver production-ready features and resolve critical issues.
Participated in production debugging and incident resolution, ensuring minimal downtime and smooth payment experiences for end users.
Followed clean architecture principles and scalable design patterns to build robust, extensible systems in a high-throughput environment.

COGNIZANT

Programmer Analyst

July 2022 - November 2024

Implemented Microservice Architecture using Spring Boot, with services communicating via REST APIs and Apache Kafka, improving scalability and system resilience.
Integrated external systems by consuming REST and SOAP web services, handling JSON and XML data formats efficiently.
Utilized JMS for reliable, loosely coupled, and asynchronous communication between distributed application components.
Designed and developed responsive user interfaces using Angular, building reusable components and services to consume backend REST APIs.
Performed extensive code refactoring and performance optimization, achieving a 68% improvement in application performance.
Developed and executed 200+ unit test cases using JUnit and Mockito, increasing code coverage by 76% and ensuring high-quality, stable releases.
Worked across the full SDLC, collaborating with business analysts, QA, and DevOps teams in an Agile environment.
Participated in production support and defect resolution, analyzing root causes and delivering timely fixes to critical issues.
Used Git, Maven, Jenkins, and SonarQube to support CI/CD pipelines, enforce code quality standards, and streamline deployments.

COGNIZANT

Internship Trainee

February 2022 - July 2022

Completed structured training in Core Java, Object-Oriented Programming, and SQL, building a strong foundation in backend development concepts.
Gained hands-on exposure to Spring Boot basics and REST API development, understanding layered architecture and best practices.
Learned fundamentals of Microservices architecture, including service communication patterns and real-world enterprise use cases.
Worked on hands-on assignments and mini projects, applying classroom concepts to solve practical development problems.
Received training on software development lifecycle (SDLC), Agile methodologies, and industry-standard coding practices.
Developed problem-solving skills through code reviews, debugging exercises, and peer collaboration.