[Hiring] Web3 Full-stack developer @Olinio

Role Description

Are you looking for your next development challenge? Step into the game by building a premium web-based NFT commerce platform that enables users to discover, purchase, and own AI-generated digital collectibles through a seamless fiat payment experience!

This role is project-based! Our client is building a premium web-based NFT commerce platform that enables customers to discover, purchase, and own AI-generated digital collectibles. Unlike a traditional NFT marketplace (such as OpenSea), our platform focuses on primary sales. Administrators create NFT collections, generate digital artwork, publish NFTs for sale, and customers purchase them using fiat payments. After successful payment, NFTs are transferred directly to the buyer's EVM compatible wallet. The project is designed with future expansion in mind, including secondary marketplace functionality, crypto payments, and multi-chain support.

Responsibilities

• Participate in designing the overall system architecture
• Design and implement backend services and database schema
• Develop REST APIs
• Implement business logic
• Design and implement smart contracts
• Integrate blockchain infrastructure
• Integrate fiat payment provider (PSP)
• Implement background workers and queues
• Deploy and maintain development environments
• Participate in technical decision making

Qualifications

• Experience with web3 projects (especially NFT projects | ERC-721 standard)
• Strong TypeScript experience
• Solid Node.js or NextJS backend development
• Experience designing scalable REST APIs
• Experience with queue-based architectures
• PostgreSQL
• Docker
• Git
• Solidity
• Smart contract deployment
• Ethereum ecosystem
• Technical understanding of blockchain, wallets, transactions, smart contracts and token standards

Requirements

• Backend: Node.js | NestJS or similar
• TypeScript
• PostgreSQL
• Prisma ORM or similar
• Redis
• RabbitMQ | BullMQ or similar
• IPFS / CDN for images storage/delivery
• Blockchain: Solidity
• ERC-721 | ERC-1155
• OpenZeppelin
• viem / ethers
• Hardhat or Foundry
• Infrastructure: Docker
• GitHub Actions
• Linux
• Frontend: React | Next.js or similar
• TailwindCSS | TypeScript or similar
• wagmi / RainbowKit / web3.js
• TanStack Query

Nice to Have

• Fintech experience
• Payment provider integrations (Stripe, Adyen, Checkout.com, etc.)
• Experience with ERC-1155 standard
• Pinata or similar IPFS / CDN
• Experience with AI image generating pipelines
• Experience with frontend JS frameworks

What You'll Build

• Main contribution in project architecture and system analysis
• NFT Collection Factory management
• ERC-721 | ERC-1155 smart contracts
• NFT images generation pipeline
• NFT minting and purchasing pipelines
• Integration with asset storage
• APIs for admin- and user-faced panels
• Order management | Payment processing
• Blockchain workers
• Production-ready backend architecture

Benefits

• Flexible working hours
• Competitive compensation package
• Possibility of extending collaboration for future projects
• Full time or part time schedule
• For office work: Weekly lunch
• Snacks and beverages in the office
• Central location office