Seimus is hiring a

Web3 ⚡ Full-Stack Developer (TypeScript / Nest.js / React) – Full-Time

We’re on the hunt for a Full-Stack Developer who’s fluent in TypeScript and loves building clean, scalable Web3 systems. This is a full-time role where you’ll help us improve and expand our presale tracking system — making it faster, smarter, and packed with new features for our community.

🏢 About Us

We’re a Web3 marketing & ad tech company that blends Web2 performance marketing with Web3 innovation. Our focus? Building tools that connect the dots between crypto presales, communities, and advertising. We work fast, experiment often, and aim to make presales transparent, fun, and easy to follow.

🔧 What You’ll Work On

- Improve and scale our live presale tracking system.

- Develop user dashboards (wallet allocations, presale history, campaign insights).

- Add multi-chain support (ETH, BSC, SOL, etc.).

- Build CRM-style backend features for campaign + community management.

- Integrate with wallet connectors (Wagmi, Reown, WalletConnect, etc.).

- Work with RPC endpoints & REST APIs for on-chain/off-chain data.

- Optimize performance, debug issues, and ship reliable features quickly.

🛠 Our Tech Stack

- Language: TypeScript (must-have)

- Frontend: Vite + React.js / Next.js

- Backend: Nest.js + MongoDB

- Web3: web3.js, ethers.js, reown, Wagmi, WalletConnect

- Version Control: Git

- Other: RPC & REST APIs, database optimization, CRM/dashboards experience a plus

✅ What We’re Looking For

- Strong TypeScript developer with experience across the full stack.

- Comfortable with React/Next.js + Vite on the frontend.

- Solid experience with Nest.js + MongoDB on the backend.

- Hands-on knowledge of Web3 libraries and wallet integrations.

- Good understanding of APIs (REST & RPC) and data handling.

- Able to work under pressure
- Disciplined and reliable working remotely

Bonus: prior experience building CRM systems or launchpad tools.

🌍 Perks

- Full-time, remote-first role (flexible location).

- Competitive salary + possible token allocation.

- Work directly on tools that thousands of Web3 users interact with.

- Fast-paced environment where your work makes an immediate impact.

👉 Ready to build with us? Send your GitHub/portfolio + CV in your application.