Web3 Fullstack Engineer (Web3)

TL;DR

Web3 Fullstack Engineer (Web3): Building the integration layer between web2 and web3 systems with an accent on digital item lifecycles, wallet connectivity, and smart contract indexing. Focus on designing scalable, reliable architectures for minting, trading, and transferring assets while ensuring consistency between on-chain and off-chain states.

Location: Must be based in Serbia

Company

hirify.global is a global commerce company providing robust tools and services for video game developers to fund, distribute, market, and monetize their games.

What you will do

• Design and ship flows for seamless web2 to web3 transitions, including account abstraction and gasless transactions.
• Manage the full lifecycle of digital items, ensuring consistency across databases and blockchain states.
• Develop end-to-end features using TypeScript, React, Node.js, and Go.
• Model item ownership and APIs to support uniform interactions across custodial and non-custodial environments.
• Ensure reliability and idempotency for all value-transfer and item-movement flows.
• Collaborate with cross-functional teams to translate business requirements into technical specifications.

Requirements

• Must be based in Serbia
• Hands-on experience bridging traditional systems with on-chain environments.
• Strong proficiency in TypeScript, React, Node.js, and Go.
• Working knowledge of EVM chains, Solidity, and token standards like ERC-20, ERC-721, and ERC-1155.
• Experience with PostgreSQL, Kubernetes, and message streaming systems like Kafka or NATS.
• Strong written communication skills for technical documentation and design decision-making.

Nice to have

• Experience building NFT marketplaces or secondary-market settlement systems.
• Familiarity with blockchain indexing tools like The Graph.
• Background in payments, fiat on-ramps, or account abstraction (ERC-4337).
• Experience with non-EVM ecosystems or cross-chain patterns.
• Hands-on experience with modern AI tools for code generation and review.

Culture & Benefits

• Work in a distributed environment across multiple time zones.
• Focus on technical depth, directness, and high-reliability engineering.
• Opportunity to work on infrastructure impacting global game economies and value movement.