Software Engineer, Crypto Platform

About this role

Join Tools for Humanity's Crypto Platform team to build foundational blockchain infrastructure powering World Chain and its global identity network. You'll design and operate mission-critical services handling transactions, smart contracts, and event processing at scale while collaborating across product, backend, and protocol teams.

What you'll do

• Design and implement highly reliable services for transaction execution, state access, and smart contract interactions
• Build event ingestion and indexing pipelines using Temporal for consistent, resilient data processing
• Own the full transaction lifecycle from state reads through submission and monitoring
• Develop crypto infrastructure including RPC load balancing, transaction simulation, and multiprovider redundancy
• Collaborate with product teams to ensure wallet features and Mini App integrations remain robust across regions
• Diagnose and resolve distributed systems failures and reliability issues

What they're looking for

• Go, Rust, and TypeScript
• Blockchain and smart contract engineering
• Distributed systems design
• Transaction processing and state management
• API design and high-availability infrastructure
• Problem-solving and debugging complex systems
• Security and reliability best practices
• Cross-functional collaboration