Headline

Software Engineer | 3.5+ YoE in FinTech | Java · Spring Boot · AWS | Full Stack (React, Next.js) | Building AI‑powered web applications with LLMs & modern full‑stack frameworks

About

I'm a Software Engineer with 3.5+ years of experience building high-throughput, distributed systems — most recently in fintech at BillDesk, where production APIs I worked on served 20,000+ billers daily. I specialize in backend engineering (Java, Spring Boot, microservices) with hands-on experience across the full stack and cloud infrastructure. A few things I've shipped: - Migrated monolithic payment APIs to microservices → 40% performance improvement - Reduced data-fetch latency 30% via Aerospike + Guava Cache optimization - Built Kafka-based pipelines now in production for payment and notification services - Optimized Oracle batch processes handling 5,000+ payments per run Beyond my full-time work, I consistently build and ship side projects: - Treso — cloud-ready expense tracking API with JWT auth, deployed on Kubernetes - LumaBot — LangGraph + Gemini 2.0 AI agent for café ordering workflows with human-in-the-loop validation - Image Processing Pipeline — serverless AWS architecture (Lambda, S3, Rekognition, DynamoDB) with event-driven triggers I'm a UT Dallas CS grad (GPA: 3.78) and served as a Teaching Assistant across three courses — Computer Science I, Software Engineering, and Systems Programming. Available to start full-time immediately. Actively seeking Software Engineer / Backend Engineer / Full Stack SWE roles. Let's connect — always happy to talk tech or explore opportunities.

Location

Dadra & Nagar Haveli

AI stack

anthropic apis

antigravity

claude code

mcp

notebooklm

Supabase

Work experience

Full Stack Software Engineer at International Economic Justice League, Inc., Jul 2025 - Apr 2026 · 10 mos, Newport Beach, CA, • Architected a secure PDF contract orchestration system using react-pdf and Next.js, automating document generation and establishing a scalable storage workflow with Supabase. • Optimized the MVP frontend by auditing and updating UI components against Figma specifications, leveraging Next.js and Tailwind CSS to improve visual polish and user experience. • Developed and validated mission-critical user flows, including a multi-step registration system integrated with Supabase Auth to ensure data integrity and future scalability for the pilot launch.

Computer Science Student Assistant at The University of Texas at Dallas, Sep 2024 - May 2025 · 9 mos, Hybrid, As a Student Assistant, I assist faculty with grading homework assignments and distributing course materials. I hold office hours to help students with course-related questions and provide support on their graded assignments. I also offer tutoring assistance and help students in lab sessions, fostering a collaborative learning environment. CS 3354: Software Engineering (Spring 2025): Collaborate with faculty to support course objectives, including grading assignments and assisting students with topics such as software life cycles, requirements engineering, formal specifications, and validation processes. CS 3377: Systems Programming in UNIX (Fall 2024): Supported students in understanding UNIX-based systems programming concepts, including shell scripting, memory management, and system calls.

Software Engineer at BillDesk, Jul 2019 - Dec 2022 · 3 yrs 6 mos, Mumbai, Maharashtra, India, • Developed and maintained REST APIs (Java, Spring Boot) for payment processing, biller onboarding, and customer service, supporting 20,000+ billers in a high traffic fintech environment. • Collaborated in a 2-person team to migrate critical payment APIs from a monolithic system to microservices architecture, contributing to a measured 40% improvement in API performance and enhanced scalability. • Integrated Aerospike (NoSQL) and Guava Cache to reduce data-fetch times by 30%, improving responsiveness for payment operations. • Optimized Oracle database interactions by reducing redundant calls and improving SQL queries, increasing efficiency and reliability of batch processes across biller registration, autopayments, and reconciliation for 1,000+ billers and 5,000+ payments per batch. • Diagnosed and resolved 400+ QA-reported bugs with an average 3-hour turnaround for minor issues, improving overall system stability and reliability. • Enhanced and maintained an offline reporting application, adding new report generation features to provide actionable insights on biller registration, transactions, and reconciliation. • Collaborated closely with cross-functional teams (Product, UI/UX, QA) using Agile/Scrum practices to clarify requirements and ensure on-time project delivery. • Co-developed a Kafka-based data pipeline solution, later adopted in production to power scalable, message-driven payment and bill notification services (including email and SMS delivery). • Designed and tested a proof-of-concept API gateway using Netflix Zuul for routing and load balancing of multiple payment and support microservices.

Education

Master of Science - MS, Computer Science, The University of Texas at Dallas

Bachelor of Technology - BTech, Computer Science, National Institute of Technology, Goa

Public links

github: https://github.com/im-harshal

imharshal.vercel.app: https://imharshal.vercel.app/