Open to opportunities

Aayush Tiwari

@aayushtiwari1

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Java Backend Engineer building production REST APIs with Spring Boot, JWT security, and reliable data pipelines.

India

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What I'm looking for

I’m looking to build secure, scalable backend systems—owning API design, authentication, and data architecture—and collaborate on full-stack or smart-contract work when it improves product outcomes.

I’m a Java Backend Engineer focused on designing and building production-grade REST APIs with Spring Boot, Spring Security, and Spring Data JPA. I’ve delivered three end-to-end systems, owning the journey from API design and JWT-based authentication to relational database modeling, third-party integrations, and containerized deployment.

On the backend, I build secure, role-aware endpoints and dependable data workflows. I also bring secondary experience in React/TypeScript front-ends and blockchain smart contract development, including Solidity, Hardhat, and Web3.js, to help teams ship features across the stack.

I take a strong algorithmic approach, with a solid DSA foundation and 200+ LeetCode problems solved. I’ve also contributed to open source through Google Summer of Code, and maintained 450+ GitHub contributions across personal and collaborative projects.

Experience

Work history, roles, and key accomplishments

Full-Stack Web Application

HipHopHub

Jan 2026 - May 2026 (4 months)

Designed and implemented a layered Spring Boot REST API with JWT-based authentication and role-secured admin endpoints, backed by Spring Data JPA; integrated Last.fm and iTunes APIs and deployed via Docker with a React/TypeScript frontend. Built an interactive 'Guess the Song' game and engineered a multi-phase pipeline to audit artists and remove contaminated tracks and invalid releases.

React TypeScript Spring Boot Java SQL REST APIs Spring Security JWT Docker Last.fm API

Secure Digital Voting Platform

Janadesh

Aug 2025 - Mar 2026 (7 months)

Architected and built a full-stack election management system with OTP-based authentication, role-based access, and end-to-end election workflows; designed a normalized PostgreSQL schema for users, candidates, elections, and vote records. Secured vote integrity using Solidity smart contracts deployed via Hardhat and extended the platform to Android via Capacitor, with REST APIs for election operat

React TypeScript PostgreSQL Solidity Hardhat REST APIs Capacitor Role Based Access Control Smart Contracts

USD-Pegged Stablecoin

SWAT Coin

Jul 2025 - Nov 2025 (4 months)

Designed and deployed a USD-pegged stablecoin on an EVM-compatible network implementing mint, burn, and collateral control mechanisms. Wrote gas-optimized Solidity contracts with a Hardhat test suite for redemption, collateral edge cases, and token-flow validation.

Solidity Hardhat JavaScript Web3.js Smart Contracts EVM