Senior Fullstack Engineer - Crypto

Job Description

Job Description

Career Renew is recruiting for one of its clients a Senior Fullstack Engineer - Crypto - this is a fully remote role for US or Europe-based candidates.

We are a web3 user acquisition platform that's powered user onboarding for over 500 protocols since 2021. We've facilitated 500M+ transactions, 60M+ on-chain credential mints, amongst 3M+ users across 40+ chains.

Our platform serves protocols including Coinbase, Uniswap, Robinhood, Solana, Phantom, Optimism, Base, and Arbitrum. Through gamified activations and CUBE credentials, we've become infrastructure for user acquisition across DeFi, gaming, AI, and NFT ecosystems.

We launched our L3 token in 2024, now trading on major exchanges including OKX, Bybit, and Coinbase. Our $21M in total funding includes a $15M Series A led by ParaFi and Greenfield, with participation from Electric Capital.

Role

Own end-to-end delivery of major product features across the stack for our core platform and new initiatives.

Drive architectural decisions for both frontend and backend systems on our multi-chain platform.

Collaborate directly with our head of product and founders on product strategy while working closely with other engineers.

Take full ownership of projects from conception to deployment, establishing technical patterns and mentoring other engineers.

Required :

7+ years fullstack development experience in production

TypeScript expertise with strong type safety practices

Next.js and React application development

Experience with production systems at scale (thousands of concurrent users)

Backend API development (tRPC preferred)

Knowledge of PostgreSQL query optimizations and Redis caching strategies

Strong debugging skills across the full stack

Cloud infrastructure experience

Preferred :

Web3 / crypto product experience

Crypto wallet development experience

Multi-chain or cross-chain application development

Viem / Wagmi for Ethereum interactions

Understanding of on-chain data indexing

Technical environment :

React, Next.js, TypeScript

tRPC APIs

PostgreSQL, Prisma ORM, Redis, Cloud infrastructure

Viem for blockchain interactions

Multichain infrastructure (Ethereum, Polygon, Arbitrum, etc.)