Backend Specialist (Blockchain Technology Development)

Datachain is recruiting a backend specialist for blockchain technology development. The role supports Web3 products and on-chain financial infrastructure, including a corporate Web3 wallet and a DataPrivacy solution. The work relates to digital finance applications such as stablecoins, tokenized deposits, and digital currencies.

Responsibilities include designing and implementing privacy-preserving functions such as zero-knowledge proofs and Confidential Transactions. The specialist will design and implement smart contracts, support audits, and carry out deep protocol-level implementation work on EVM-based chains. The role also includes backend development for policy engines and access controls, as well as technical collaboration with external blockchain partners.

The position is expected to define platform-foundation specifications by working backward from business needs. It supports the core of Web3 products through blockchain engineering, with work involving data-privacy protection, advanced policy engines, and smart-contract implementation.

The technical areas named in the posting include blockchain, zero-knowledge proofs, Confidential Transactions, smart contracts, EVM-based chains, policy engines, access control, and backend development. The broader product context is infrastructure for on-chain finance and the digitization of real-world assets such as equities, bonds, and real estate. Datachain has conducted research and development in blockchain infrastructure since its founding in 2018, including technology for connecting different blockchains with security, cost efficiency, and scalability.

Work is centered on remote work. If office attendance is required, the stated office is on the 35th floor of Roppongi Grand Tower, 3-2-1 Roppongi, Minato-ku, Tokyo. The stated change-of-work-location range is locations designated by the company, including places where remote work is performed.