Full-Stack Web3 Developer

|

About

Here is a little background

I’m a full-stack Web3 engineer with 5+ years of experience building secure, production-grade decentralized systems. I’ve worked across Ethereum, Polygon, and Gnosis, designing everything from DeFi protocols and upgradeable smart contracts to high-performance backends and clean, scalable frontends.

My core strength is ownership across the stack — from smart contract architecture, audits, and gas optimization to Node/Go services, indexing with The Graph, and modern React/Next.js interfaces. I’ve led protocol upgrades, resolved critical audit findings, and shipped systems used by real users at scale.

I enjoy working on hard problems: protocol design, security-first engineering, and systems that need to last. Whether it’s a Web3 protocol or a full-stack product, I focus on building things that are robust, maintainable, and thoughtfully engineered.

Experience

Full-stack Developer

Tavolo

Jul 2025 - Present

Architected core video and email campaign systems end-to-end (Go, Node, React) with approval workflows, role-based access, and async notifications—directly contributing to 50+ new customers onboarding.
Replaced Google Drive with a custom internal asset gallery featuring concurrent uploads, MIME validation, lazy-loaded videos, and fault-tolerant processing, improving media performance and reliability.
Built high-performance Go backend services (async SendGrid/Slack via Goroutines, Redis caching, social APIs) and developed AI-driven customer segmentation with conversational UI and CSV bulk import.
Improved frontend architecture with a React Query migration, centralized API handling, and code-quality automation for smoother development and predictable data flows.

Senior Blockchain Developer

Sperax

Oct 2023 - Aug 2025

Architected major on-chain systems including the Chaquen fantasy sports platform (League/Contest engine, ChaquenPoints token, prediction markets), Uniswap V3–based Demeter liquidity farms, and USDs V2 stablecoin upgrades.
Designed upgradeable smart-contract architectures across multiple protocols, covering reward distribution, active liquidity tracking, user-created contests, ERC20 reward flows, and cross-version schema evolution.
Resolved 10+ security findings and implemented extensive gas optimizations, rebasing fixes, allowance security, input validation, and Solidity 0.8.19 migration across USDs, VaultCore, Dripper, YieldReserve, and farm contracts.
Built full-stack infrastructure including a Node/TypeScript backend (JWT auth, Redis caching, Entity Sports API integration), real-time leaderboards, match scoring logic, and a full subgraph indexing layer for leagues, contests, betting, and rewards.
Established protocol-grade DevOps & testing, with Foundry/Hardhat deployment tooling, Gnosis Safe multisig flows, gas-diff CI, load-testing scripts, comprehensive fuzz + edge-case test suites, NatSpec documentation, and monitoring dashboards.

Freelance Web3 Developer

Upwork

Mar 2021 - Nov 2023

TOP RATED on Upwork
Helped both long and short-term projects with smart contract and web3 services
5 Started rated with more than 60+ jobs

Freelance Web3 Developer

MeTokens

Sep 2023 - Sep 2023

Developed major flows of MeToken smart contracts along with test, internal audit and deployment
Helped with frontend integration and subgraph development

Freelance Web3 Developer

PlazaTech

Sep 2021 - Aug 2023

Developed smart contracts for various projects, namely- Share, MetaFit and GivVault, along with test, internal audit and deployment
Scripted bots for DAO automation

Freelance Web3 Developer

Rigor

Aug 2021 - Aug 2023

Developed Rigor smart contracts along with test, internal audit and deployment
Helped with frontend integration and subgraph development

Full Stack Developer

Somish

Jul 2020 - Jul 2021

Developed smart contracts for various projects, namely- Rigor Finance, Biteeu and PlotX, along with test, internal audit and deployment
Handled Frontend and Backend integration
Scripted bots for PlotX markets automation

Skills

Mocha

Node

Tailwindcss

Javascript

Ethereum

Git

MongoDB

Postgress

Typescript

Hardhat

EthersJS

Redis

NextJS

React

Solidity

Go (golang)

Projects

Smart Lorem Ipsum

An AI-powered tool that generates high-quality, unique lorem ipsum and dummy content using OpenAI GPT-3, with customizable templates and an easy-to-use interface.

View Project

CryptoBucks- A Crypto Screener

CryptoBucks is a crypto screener with a clean, intuitive interface that helps users discover, filter, and track cryptocurrencies using real-time data, analytics, and market insights.

View Project

NFT Landing Page

A sleek, modern NFT landing page with clear information, strong visuals, intuitive navigation, and a seamless onboarding experience that aligns with the brand and artist’s vision.

View Project

Contact

Would be glad to help. Let's talk

parv3213@gmail.com