Bhushan Dhapodkar — Java Backend Developer & AI Engineer

About Me

Engineering the future of
payments & AI

I'm a Java Backend Developer with 6.9 years in the fintech industry, currently working as SDE-III at Nium, Mumbai. I specialise in designing and building secure, high-performance payment gateway systems — handling cross-border transactions, SEPA corridors, and multi-country environments.

Beyond core engineering, I'm deeply passionate about AI-driven development. I've used LLMs to modernise a complex Java 8 → Java 21 payment platform in 2 days (instead of the usual 10–15), and I shipped Nium's first n8n automation live in production — eliminating manual after-hours intervention for 100+ global payment partners.

Outside work I build side projects: DSA Animator (an interactive DSA learning platform that hit 2500+ users in its first month) and the LockIn App on the Play Store.

GitHub LinkedIn Email

Bhushan Dhapodkar

SDE-III @ Nium

📍 Mumbai, India

Java Spring Boot AI/LLM MCP Fintech n8n

Career

Work Experience

Nium

SDE-III

Jun 2022 — Present Mumbai, India

Spearheaded design & development of the Payment Gateway, Payin, Card-Based System & Direct Debit supporting SEPA and multi-country corridors.
Resolved critical operational pain points with AI-driven automation solutions, improving process efficiency and turnaround time significantly.
Designed and launched a Partner Downtime Management UI via n8n — Nium's first automation live in production, eliminating manual after-hours scripts for 100+ global partners.
Led Java 8 → Java 21 modernisation of a complex payment platform in 2 days using LLM-assisted development (traditionally 10–15 days).
Implemented robust microservices using Spring Boot, RabbitMQ, Apache Camel for distributed, scalable communication.
Led LLM Integration, Spring AI, MCP Implementation and scalable AI systems across the platform.
Mentored junior engineers on coding standards, system design, and best practices.

Java 21Spring Boot 3Apache Camel 4RabbitMQn8nSpring AIMCPSEPA

Accion Labs

SDE-II

Sept 2021 — Jun 2022 Bangalore, India

Led development of the Entity Verification system enabling banks to verify customer identities (PAN, Aadhar, Passport, Voter ID), improving KYC efficiency.
Architected backend services with Spring Boot & Java 8 across Card payment, Gaming, Trading, and Travel domains.
Worked with MongoDB, Graph DB, Redis, Azure in full-stack scenarios.

Java 8Spring BootMongoDBRedisAzureKYC

TCS

Software Engineer

Jul 2019 — Sept 2021 Nagpur, India

Developed and maintained critical backend services for enterprise applications using Java, Spring Boot, and SQL.
Ensured high scalability, performance, and reliability across multiple client projects.

JavaSpring BootSQL

ISRO 🚀

Software Engineer Intern

Jul 2018 — Mar 2019 Nagpur, India

Optimised satellite image processing pipelines using Python (NumPy, Pandas) with parallel processing techniques.
Reduced image processing time from 16 minutes → 7 minutes while improving throughput and lowering computational overhead.

PythonNumPyPandasParallel Processing

Projects

Things I've Built

🌟 Featured

📊

DSA Animator

An interactive web platform that animates Data Structures & Algorithms visually. Reached 2,500+ users in just 1 month after launch — helping students and engineers understand DSA patterns through rich, step-by-step animations.

2500+ Users

1 Month

HTML/CSS/JSAnimationsDSA

Visit Website →

🔒

LockIn App

A cross-platform productivity app available on the Google Play Store. Developed with strong backend foundations using Java + Spring Boot, helping users stay focused and disciplined.

FlutterJavaSpring BootPlay Store

View on Play Store →

⚡

Partner Downtime UI @ Nium

Nium's first n8n automation live in production. A centralised, secure self-service UI for scheduling, pausing, and resuming downtimes for 100+ global payment partners — eliminating manual weekend interventions.

n8nAutomationFintechInternal Tool

🌙 No more manual night/weekend scripts 🔍 Full auditability & visibility

☕

Java 21 Migration (LLM-Assisted)

Led a full Java 8 → Java 21 modernisation of a complex payment platform in 2 days using LLM-assisted development — a process that traditionally takes 10–15 working days.

Java 21Spring Boot 3Jakarta EEApache Camel 4AI/LLM

⚡ 10–15 days → 2 days 30+ dependency upgrades

🎬

Reels Manager

A cross-platform app built with Flutter + Java/Spring Boot backend, developed with 95% AI-generated code — a testament to effective AI collaboration.

FlutterJavaSpring Boot95% AI code

🏆