Full Stack Engineer II

About Avici

Avici is a fintech startup changing the way people use stablecoins. Our platform enables easy spending, saving of stablecoins through an integrated solution featuring a DEFI wallet & Visa credit card.

Our purpose is to decrease the influence of central banks by building distributed internet banking infrastructure

Role Overview

We're looking for a Full Stack Developer with strong backend and frontend experience to join our core engineering team. The ideal candidate should be confident working with Node.js , MySQL , MongoDB , and Next.js , while having a good understanding of blockchain concepts and libraries like Web3.js or Viem .

You'll be working closely with the founders to build secure APIs, scalable backend systems, and intuitive front-end interfaces for wallets, transactions, and dashboards.

Key Responsibilities

• Develop, optimize, and maintain backend APIs using Node.js and Express .
• Design scalable database schemas and queries using MySQL and MongoDB .
• Build front-end interfaces and dashboards using Next.js and React .
• Integrate smart contract interactions via Web3.js or Viem for ERC-20 tokens and on-chain activities.
• Work with authentication layers, middleware, and session management (JWT, Web3Auth, etc.).
• Collaborate with product and design teams to deliver smooth UX across mobile and web.
• Write clean, maintainable, and testable code (TypeScript preferred).
• Implement caching, queues, and performance optimization for API endpoints.
• Participate in code reviews, architecture discussions, and deployment automation (Docker, Nginx).

Requirements

Good to Have

Perks

Skills Required

Express, Redux, Node.js, React, Git, Typescript, Javascript, Docker, Mysql, Mongodb, Postman, Restful Apis