Web3 & Smart-Contract Developer (Co-Founder/Partner)

Seeking a Web3 & Smart-Contract Developer (Co-Founder/Partner) – ideally UK Based but open to non UK applicants.

Are you passionate about blockchain, tokenomics, and sustainability? Do you dream of building products that merge fashion, finance, and real-world impact? If so, TSOMB (The Shirt On My Back) wants you. We’re on a mission to democratize crypto investing through a tangible, eco-friendly wearable—a cold-storage crypto wallet woven into a t-shirt—and we need a technical co-founder to bring the vision to life.

About TSOMB

TSOMB Ltd. is a London-based startup creating the world’s first fully sustainable, tokenized wearables. Each TSOMB T-shirt:

• Holds a cold wallet : The private key is securely embroidered inside; the public key is accessible via a wash-safe QR label and PVC card tag.
• Embodies sustainability : Organic cotton, recycled packaging, and a pledge to plant one tree per shirt.
• Tokenizes equity : Every shirt comes with TSOMB Vested Tokens (equity in TSOMB) stored in the embedded wallet; dividends are paid in TSOMB Hedge Tokens.
• Connects community to finance : We’re launching our first 600 proof-of-concept shirts via Kickstarter and plan to expand into hoodies, caps, and home goods—all embedding cold-storage wallets and tokenized equity.

Our long-term vision is a dual ecosystem: a sustainable fashion brand and a community-driven hedge fund, powered by wearable tokens. We want everyday people—tech-savvy and non-tech alike—to own a piece of the company simply by wearing a t-shirt.

Why Join TSOMB as a Technical Co-Founder?

• Equity Ownership : Meaningful equity share through our TSOMB Vested Token model.
• Innovative Product : Shape the world’s first fashion-integrated cold-storage wallet.
• Purpose & Impact : Help us merge crypto adoption with environmental stewardship (1 shirt = 1 tree).
• London Hub : Primarily remote with occasional in-person sprints (co-working space in Shoreditch).
• Early-Stage Influence : You’ll define the technical architecture—from smart contracts to CI/CD and security audits.

What You’ll Build & Lead

1. Smart-Contract & Token Architecture

• Design and implement the TSOMB Vested Token (equity token) and TSOMB Hedge Token (dividend token) on Ethereum (ERC-20/ERC-721/ERC-1155/4626 standards).
• Define proxy/upgradeable patterns (e.g., OpenZeppelin Proxy, Diamond Standard) for future extensibility (companion app, Chip Phase 2).
• Integrate token issuance with our cold-storage method (embedded wallets), enabling registration (public key) and optional custodial flows (private key registration) on-chain.
• Build staking/reward mechanisms for tree-planting and community incentives.

1. Wallet & On-Chain/Off-Chain Integration

• Architect the flow for embedding keys into garments (QR labels, embroidered private keys) and linking them to on-chain addresses.
• Develop backend APIs (Node.js/TypeScript or similar) to support:
• Wallet registration (public key whitelisting, custodial vs. non-custodial logic).
• Dividend distribution in TSOMB Hedge Tokens to physical (cold) or registered wallets.
• Token exchange: allowing holders to swap Vested Tokens for official company shares after 1 year.
• Collaborate with front-end developers (React + Web3 libraries: ethers.js, wagmi, Onboard.js) to build a TSOMB Companion App :
• QR-based wallet top-ups (integrate with Coinbase/Revolut/other rails).
• Real-time balance and dividend tracking.
• Tree-planting impact dashboard (web3-verified).

1. Security, Testing & Audits

• Implement robust unit testing (Hardhat/Truffle, Waffle) and fuzz testing (Echidna).
• Integrate Slither/MythX in CI pipelines for static analysis.
• Manage external audits and coordinate bug bounty programs.
• Ensure GDPR-compliant data handling for registered users.

1. Future Migrations & Phase 2 R&D

• Architect smart contracts for the optional Crypto Garment Chip (NFC/QR-based on-garment interactions).
• Plan for multi-chain expansion (Polygon, BSC, Solana/Rust, Polkadot/Ink) as we add new token types and lower gas fees.
• Build modularity to support future products (hoodies, home wear) embedding wallets.

Who We’re Looking For

• Solid Blockchain Background : 3 + years of professional smart-contract development, with public repositories or live dApps.
• Deep Solidity Expertise : ERC-20, ERC-721, ERC-1155, ERC-4626; upgradeable patterns (proxy, diamond); gas optimization; security best practices.
• Full-Stack Web3 Skills : Comfortable integrating front-end frameworks (React/Vue) with ethers.js/web3.js/wagmi. Experience building companion dashboards or NFT marketplaces is a plus.
• Strong Security Mindset : Familiar with Slither, MythX, Echidna, and orchestrating external audits. Able to write thorough unit/fuzz/integration tests.
• Product-Focused & Collaborative : You’ll be making architectural decisions, writing documentation, and partnering directly with founders. Excellent communication skills (English) are a must.
• London-Based (or Willing to Relocate) : Ideally within commutable distance for occasional in-person sprints.

Nice-to-Haves

• Rust/Ink experience (for potential Solana/Polkadot expansion).
• Familiarity with off-chain indexing (The Graph, Subgraph deployments).
• Prior work in wearable tech or IoT (NFC/embedded systems).
• Passion for sustainability, fashion, and community-driven finance.

Why TSOMB Is Different

• Wearable Wealth : We’re not building another hardware wallet or dApp—we’re embedding cold storage directly into high-quality, eco-friendly garments.
• Physical & Digital Equity : Instead of a standard cap table, every shirt is tokenized equity. TSOMB Vested Tokens live in your apparel until you choose to register them—nothing like this exists in fashion or crypto today.
• Sustainability at the Core : With every shirt sold, we plant a tree. And soon we’ll manage our own TSOMB Forest Reserves, giving token holders real-time impact metrics.
• Early Stage, Massive Potential : We’re just launching our first 600 Kickstarter shirts. Your code will underpin our entire ecosystem—there’s no “throwaway MVP.”

How to Apply

1. Email info@theshirtonmyback.com
2. message me on linkedin

• Your thoughts on how you’d approach building TSOMB’s token model and cold-storage integration.
• Why you’re excited by the intersection of fashion, crypto, and sustainability.

1. (Optional) Attach or link any demos, blog posts, or write-ups that highlight your Web3 work.

Even if you don’t check every box, if you’re intrigued by building the future of wearable finance, reach out—we’d love to talk.

This is a rare chance to shape a tokenized, eco-friendly brand from day one—and to own a meaningful piece of it.

P.S. Know someone perfect for this role? Please forward this post!