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- Tasks: Join us to develop innovative smart contracts and integrate blockchain with fashion.
- Company: TSOMB is a London-based startup revolutionising sustainable wearables with embedded crypto wallets.
- Benefits: Enjoy equity ownership, remote work flexibility, and the chance to make a real-world impact.
- Why this job: Be part of a groundbreaking project merging fashion, finance, and sustainability for a better future.
- Qualifications: 3+ years in smart-contract development with strong Solidity and full-stack Web3 skills required.
- Other info: This is a unique opportunity to shape an eco-friendly brand from the ground up.
The predicted salary is between 36000 - 60000 ÂŁ per year.
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
- 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.
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.
- QR-based wallet top-ups (integrate with Coinbase/Revolut/other rails).
- Real-time balance and dividend tracking.
- Tree-planting impact dashboard (web3-verified).
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.
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
- Email info@theshirtonmyback.com
- 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.
- (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!
Web3 & Smart-Contract Developer (Co-Founder/Partner) employer: TSOMB
Contact Detail:
TSOMB Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Web3 & Smart-Contract Developer (Co-Founder/Partner)
✨Tip Number 1
Familiarise yourself with the latest trends in blockchain and smart contracts, especially those related to fashion and sustainability. This will not only help you understand TSOMB's mission but also allow you to engage in meaningful conversations during interviews.
✨Tip Number 2
Showcase your passion for sustainability and community-driven finance by sharing relevant projects or experiences. Whether it's a personal project or a professional achievement, demonstrating your commitment to these values can set you apart from other candidates.
✨Tip Number 3
Network with professionals in the Web3 and fashion industries. Attend meetups, webinars, or online forums where you can connect with like-minded individuals. Building relationships can lead to valuable insights and potential referrals for the role.
✨Tip Number 4
Prepare to discuss your vision for integrating technology with fashion. Think about innovative ideas that could enhance the user experience of TSOMB's products, as well as how you would approach the technical challenges outlined in the job description.
We think you need these skills to ace Web3 & Smart-Contract Developer (Co-Founder/Partner)
Some tips for your application 🫡
Understand the Vision: Before applying, take time to understand TSOMB's mission and vision. Familiarise yourself with their innovative approach to merging fashion, finance, and sustainability. This will help you tailor your application to reflect your passion for these areas.
Highlight Relevant Experience: In your CV and cover letter, emphasise your experience in blockchain and smart contract development. Be specific about your skills in Solidity, ERC standards, and any relevant projects you've worked on. Providing links to public repositories or live dApps can strengthen your application.
Showcase Your Passion: In your application, express your enthusiasm for the intersection of fashion, crypto, and sustainability. Share why this role excites you and how you envision contributing to TSOMB's mission. Personal anecdotes or insights can make your application stand out.
Prepare a Thoughtful Approach: When reaching out, include your thoughts on building TSOMB’s token model and cold-storage integration. This shows initiative and gives the founders insight into your thinking process. If possible, attach demos or write-ups that showcase your Web3 work.
How to prepare for a job interview at TSOMB
✨Show Your Passion for Blockchain and Sustainability
Make sure to express your enthusiasm for blockchain technology, tokenomics, and sustainability during the interview. Share any personal projects or experiences that highlight your commitment to these areas, as TSOMB is looking for someone who aligns with their mission.
✨Demonstrate Technical Expertise
Be prepared to discuss your experience with smart contracts and blockchain development in detail. Highlight specific projects where you've used Solidity and relevant standards like ERC-20 or ERC-721. Having a portfolio of public repositories or live dApps can really set you apart.
✨Communicate Your Collaborative Spirit
TSOMB values collaboration, so be ready to talk about how you've worked with teams in the past. Discuss your approach to architectural decisions and how you document your work. Strong communication skills are essential, so practice articulating your thoughts clearly.
✨Prepare Questions About Their Vision
Show your interest in TSOMB by preparing thoughtful questions about their long-term vision and product roadmap. Ask about their plans for future expansions and how they see the intersection of fashion and finance evolving. This demonstrates your genuine interest in being part of their journey.
