Open to opportunities

Naman Gupta

@namangupta4

Backend software developer building high-concurrency Java systems for fintech platforms with event-driven architectures.

India

Message

What I'm looking for

I’m looking for a backend role where I can own scalable, event-driven systems in fintech or high-throughput domains—designing APIs, improving latency, and building reliable services with strong engineering practices and room to grow.

I’m a backend software developer at Vegapay Technology, contributing to a Credit Card SaaS platform (CCMS) that handles 10K+ TPS and 100M+ transactions/month at 99.99% uptime. I bring strong ownership across high-performant API layers, Java Spring Boot, and event-driven architectures for correctness under load.

I architected and delivered an event-driven pipeline ingesting client CSV files from SFTP servers and processing them via Chronos and Kafka—persisting raw files to AWS S3 and structured metadata to PostgreSQL. By using adaptive service warming and auto-scaling, I improved initial request latency by 80% to 30 ms, and I implemented Kafka-based workflows for transaction processing and reconciliation with account-level locking for consistency.

I also engineered scalable reporting microservices and daily workflows with complex SQL joins, delivering 10K+ records monthly with 100% on-time delivery and S3 archival. Earlier, I built high-performance Django backends (1.5M+ records, REST APIs hitting 20K+ peak daily requests) and developed ML/chatbot features in Flutter, plus I published NLP research using SpaCy for Named Entity Recognition and privacy protection.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

Vegapay Technology Pvt. Ltd.

Jan 2025 - Present (1 year 4 months)

Developed and enhanced the Credit Card Management System (CCMS) and high-performance API layers supporting 10K+ TPS and 100M+ transactions/month at 99.99% uptime, standardizing responses across core and third-party backends. Built an event-driven ingestion and processing pipeline from SFTP to S3 and PostgreSQL, reducing initial request latency from higher baseline to 30 ms via adaptive warming and

Java Spring Boot Kafka AWS S3 PostgreSQL REST APIs Microservices Distributed Systems CI CD

Chatbot Developer/ML Intern

MASTH (UltraHive HealthCare Pvt. Ltd.)

May 2022 - Jul 2022 (2 months)

Implemented chatbot conversation modules in Google DialogFlow for goal-directed interactions using CBT workflows, supporting ~1K users. Built responsive Flutter UI with backend integration and shipped personalized user activity tracking to the production app on Google Play.

Dialogflow Machine Learning Flutter REST APIs UI Natural Language Processing QA Testing

Backend Developer Intern

GoGlocal Pvt. Ltd.

Mar 2022 - May 2022 (2 months)

Designed a Django + PostgreSQL backend managing 1.5M+ records and delivered REST APIs for a marketplace handling 20K+ peak daily requests with ~150ms average response time. Built a resilient, fault-tolerant backend to support low-latency seller operations while maintaining 70% unit test coverage.

Django Python PostgreSQL REST APIs API Design Unit Testing Linux Backend Fault Tolerance

Full Stack Developer Intern

Algoix Technologies

Jul 2021 - Aug 2021 (1 month)

Planned and optimized a recruiter-learner-mentor platform from scratch using Django and Python, integrating learner/mentor/recruiter forums backed by SQL. Implemented 20+ data access endpoints to streamline interactions for 5K+ users.

Django Python HTML CSS SQL Platform Development Data Modeling