Expert Fullstack Engineer (Web3)

TL;DR

Expert Fullstack Engineer (Node/React): Building and scaling wallet infrastructure and developer tooling for a digital asset platform with an accent on security, reliability, and scalability. Focus on designing rich frontend experiences, implementing scalable backend services, and integrating Web3/blockchain functionalities.

Location: Must be based in Romania (Remote or Hybrid in Bucharest)

Company

A custom product engineering company that supports multinational organizations and scaling startups to solve complex business challenges.

What you will do

• Design and implement rich frontend experiences and scalable backend services for wallet infrastructure.
• Own features across the entire stack from technical design and architecture to implementation, testing, and deployment.
• Build and maintain backend services and APIs supporting authentication, wallets, and payments infrastructure.
• Develop user-facing features and frontend tooling for both end-users and developers.
• Collaborate with Product, Design, and engineering teams to deliver high-impact features.
• Contribute to platform performance, reliability, and scalability while upholding engineering best practices.

Requirements

• 3–5 years of experience building and shipping production-grade, full-stack web applications.
• Strong proficiency with React and TypeScript on the frontend.
• Experience building backend systems and APIs using Node.js and frameworks like Express.
• Comfort working across frontend and backend systems in complex, evolving codebases.
• Must be based in Romania.

Nice to have

• Experience with blockchain technologies (EVM chains, wallets, on-chain integrations).
• Proficiency in Solidity for writing, deploying, and testing smart contracts.
• Experience with various state management solutions in production React applications.
• Background in security products or other high-sensitivity domains.

Culture & Benefits

• Radical flexibility: choice between fully remote work or working from the office.
• Growth opportunities through internal mobility and large-scale projects with global impact.
• Tailored learning via internal meetups, workshops, Udemy access, and company-paid certifications.
• Medical subscription to Regina Maria.
• Meal tickets of 40 RON net per day worked.
• Friendly, open-door environment with a strong professional community.