Backend - Lead Engineer (Stablecoin Business)

Job Overview 1. The Blockchain Market and Our Challenge Since our early days, we have focused heavily on R&D in blockchain infrastructure. Through these efforts, we have successfully developed technology that enables secure, cost-efficient, and scalable interoperability between different blockchains. This technology is highly innovative on a global scale and has received strong recognition, including from SWIFT (Society for Worldwide Interbank Financial Telecommunication). Leveraging this technology and our deep expertise in blockchain, we are advancing businesses related to blockchain-based finance and digital currencies, including stablecoins and tokenized deposits. 2. Products You Will Work On You will lead the planning, development, and growth of products that are expected to become critical infrastructure for on-chain finance, including our recently announced enterprise Web3 wallet and Data Privacy solutions. 3. Key Responsibilities Design and implement support for EVM-compatible blockchains, including Avalanche, Ethereum, and Polygon Design and implement Passkey-based and smart contract wallets Design and implement browser extension and WalletConnect integrations Work closely with the Tech Lead and other team members to investigate and resolve technically challenging issues and contribute to key technical decisions Actively participate in code reviews and design reviews 4. About Datachain Since its founding in 2018, Datachain has continued to invest in R&D as a Japan-born global deep-tech company, with the goal of creating infrastructure that becomes the de facto industry standard. As we prepare for a future in which real-world assets (RWAs) such as equities, bonds, and real estate are increasingly represented as digital assets, we are accelerating the development of next-generation financial infrastructure. We are hiring for this position to strengthen the backend engineering capabilities that will play a central role in building this infrastructure. Required Qualifications 5+ years of professional experience as a backend engineer Production development experience using Go Experience designing and implementing complex business logic Hands-on experience with distributed systems and asynchronous processing Production development experience in containerized environments using Docker and Kubernetes Preferred Qualifications Professional experience with blockchain, smart contracts, or EVM-related technologies Experience implementing Passkey, WebAuthn, or FIDO2 Practical knowledge of cryptographic technologies, including digital signatures, key management, and Zero-Knowledge Proofs Experience with cloud infrastructure on Azure, AWS, or GCP Ideal Candidate Profile Able to assess the current state of systems, define the desired future state, and lead the team in building high-quality systems Able to balance business, organizational, and technical considerations and clearly articulate the appropriate direction from a technical perspective Able to collaborate with engineers and Tech Leads across the company to build and strengthen the engineering culture Proactively develops their technical expertise and takes the initiative in building the development environment and engineering organization required to create high-quality systems