Expert Fullstack Engineer (Web3/Fintech)

TL;DR

Expert Fullstack Engineer (Web3/Fintech): Building and scaling secure wallet infrastructure and developer tooling for a global financial platform with an accent on React, TypeScript, and Node.js. Focus on designing robust backend APIs, implementing secure-by-default frontend experiences, and ensuring high performance for large-scale fintech applications.

Location: Must be based in Bulgaria (Remote)

Company

hirify.global is a global custom product engineering company that supports multinational organizations and scaling startups in solving complex business challenges through innovative technology.

What you will do

• Design and implement rich frontend interfaces and scalable backend services for wallet infrastructure.
• Own features across the stack from technical architecture to deployment and optimization.
• Build and maintain backend services and APIs supporting authentication, wallets, and payments.
• Develop user-facing features and developer tooling for crypto and fintech applications.
• Collaborate with product and design teams to deliver high-impact, secure features.
• Uphold engineering best practices through code reviews, testing, and documentation.

Requirements

• Must be based in Bulgaria.
• 3–5 years of experience building production-grade full-stack web applications.
• Strong proficiency with React and TypeScript.
• Experience building backend systems and APIs using Node.js.
• Comfort working across complex, evolving codebases.
• Interest in fintech and Web3 infrastructure.

Nice to have

• Experience with blockchain technologies and EVM chains.
• Solidity experience including smart contract deployment and testing.
• Experience with state management in production React applications.
• Background in security products or high-sensitivity domains.

Culture & Benefits

• 25 paid days off (20 vacation days + 5 sick leave days).
• Additional health insurance coverage.
• 100% company-covered Multisport card with family discounts.
• Tailored education path with access to Udemy and certifications.
• Regular performance-based salary reviews.
• Corporate events, webinars, and internal mobility programs.