0xshubhs.eth

01 / about

Gm, I'm Shubham.

Blockchain engineer, two-plus years deep in Web3. I build the whole stack: Solidity and FHE contracts, custom EVM chains, indexers, and the frontends that make them usable.

By day I'm the lead blockchain engineer on Maha Fraxn at Qoneqt, an RWA exchange running on its own custom chain, where I built the on-chain audit trail, the admin and fee systems, and i18n for all 22 Indian scheduled languages. 700+ commits, over 90% of the codebase's entire history.

By night I ship hackathon projects that keep winning: private FHE checkouts on Fhenix (Sigill), sealed-bid ZK auctions on Aleo (SilentBid), sign-once-settle-many x402 payment sessions on Base and Solana, and AI trading agents on SoSoValue. Six paid wins and counting.

When something upstream is broken I fix it there too: DefiLlama's TVL adapters, the Foundry book, Starknet Quest's Rust API, Witnet's elliptic curve library.

Privacy tech is my lane: FHE (Zama, Fhenix, Inco), zero-knowledge (Aleo), stealth addresses, confidential payments. If a transaction can leak something, I've probably built a way to seal it. Off the keyboard: music, meditation, and the gym.

Skills & technologies

02

Technologies I've worked with across web development and Web3.

Frontend

htmlcssjavascripttypescriptreacttailwindnextjs

Backend

nodejsgopythonredispostgresqlmongodbmysqlnginxdockerkubernetes

Blockchain

ethereumsolidityweb3jsfoundryethersrust

Work experience

03

My professional journey in Web3 and development.

  1. April 2025 → Now

    Blockchain Engineer

    Qoneqt (Human Quotient Pvt Ltd)

    Lead blockchain engineer on Maha Fraxn, the company's RWA (real-world asset) exchange. Built it end to end with 700+ commits across all branches, over 90% of the repo's entire commit history. Built the on-chain audit trail in Solidity (bytes32 listing IDs, usernames, full trade metadata) and spun up the exchange's own custom EVM chain with a block explorer. Shipped the admin platform end-to-end: trade monitoring with buy/sell filters and exports, fee statistics, market-maker fee logic (side-aware fees, 0% for listing owners and assigned MMs), and KYC flows. Implemented an i18n system covering all 22 Indian scheduled languages, and hardened the stack with security fixes from parallel audit passes. Earlier: built Subgraph + NodeJS indexers for the Oboswap DEX, customised Avalanche Subnet L1s (precompiles for gas, reward managers, custom fees), and gasless transactions on Qoneqt via EIP-712 / EIP-2771 meta-transactions.

    visit →

  2. Feb 2025 → Now

    Solidity Engineer

    AttenomicsLabs

    Wrote and maintained comprehensive test suites for smart contracts covering unit, integration, and fuzz testing. Identified and documented security edge cases including reentrancy, integer overflow, access control bypasses, and frontrunning vectors. Worked on hardening contract logic through rigorous testing and security-focused code reviews.

  3. December 2024 → Now

    Frontend Developer & AI Agent Integrator

    FOMO-Wallet

    Built frontend components and integrated the AI agent into the wallet, making it easier to discover and place bets on the platform.

    visit →

  4. September 2024 → Now

    Builder

    What was that Meme?

    Built the website, backend scraper, and pagination for What was that Meme? — a meme aggregator that crawls the internet and brings the memes to you.

    visit →

Open source

04

When something upstream is broken, I fix it there. Counts and the full log below are pulled live from GitHub; every link goes to real merged work.

DefiLlama

DefiLlama/DefiLlama-Adapters · dimension-adapters

DeFi's canonical TVL and metrics aggregator. Adapter fixes and new integrations keeping protocol metrics accurate.

Foundry

foundry-rs/book

Official documentation for the Foundry smart contract toolchain used by most of the EVM ecosystem.

Starknet Quest

lfglabs-dev/api.starknet.quest

LFG Labs' quest platform API on Starknet, written in Rust. Production backend serving the Starknet Quest app.

Witnet

witnet/elliptic-curve-solidity

Elliptic curve arithmetic library in pure Solidity, used for on-chain secp256k1 operations.

GDSC LTCE

GDSCltce/AIML

Google Developer Student Clubs chapter. Built out the AI/ML learning track: regression, classification, deep learning, and reinforcement learning resources.

OpenSauced

open-sauced/docs

Open source contribution analytics platform. Improved contributor and maintainer documentation.