{"id":492589,"url":"https://alion.io/job/datachain-frontend-lead-engineer-stablecoin-business","title":"Frontend - Lead Engineer (Stablecoin Business)","company":{"id":99268,"name":"Datachain","domain":"datachain.jp","url":"https://alion.io/company/datachain","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"HERP","truth_index":{"grade":"A","score":95,"open_postings":9,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":147,"computed_at":"2026-10-25T05:49:26Z"}},"role":"Frontend","role_family":"Frontend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["JP"],"hiring_countries_total":1,"salary":{"min":8000000,"max":null,"currency":"JPY","period":"year","gross":null,"usd_annual":51352},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"NFT","optional":false},{"name":"React.js","optional":false},{"name":"Reown","optional":false},{"name":"TypeScript","optional":false},{"name":"Ethereum","optional":true},{"name":"Ethers.js","optional":true},{"name":"JavaScript","optional":true},{"name":"MetaMask","optional":true}],"status":"live","first_seen_at":"2026-09-07T02:06:33Z","employer_posted_date":null,"last_verified_at":"2026-09-07T02:06:33Z","board_verified":false,"closed_at":null,"days_open":48,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":48},"description":"Job Overview\n1. The Blockchain Market and Our Challenge\nSince 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.\nThis technology is highly innovative on a global scale and has received strong recognition, including from SWIFT (Society for Worldwide Interbank Financial Telecommunication).\nLeveraging 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.\n2. Products You Will Work On\nYou 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.\n3. Mission\nAs a core member of frontend development for our Web3 wallet product, you will play a key role in driving product growth.\nYour mission is to take ownership of frontend architecture while working closely with designers to deliver a high-quality wallet user experience that makes the complexity of Web3 feel seamless and intuitive to users.\n4. Key Responsibilities\nDesign and implement frontend applications for platform-related features, including policy engines and administrative interfaces\nImplement support for additional blockchain networks, NFT display functionality, and browser extensions\nSupport Web3 standard protocols such as WalletConnect\nDesign and implement frontend security measures, including XSS prevention, CSP, and transaction signing flows\nImprove testing frameworks and optimize frontend performance\nCollaborate with Product Managers and designers to continuously improve the user experience\n5. About Datachain\nSince 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.\nAs 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.\nWe are hiring for this position to strengthen the frontend engineering capabilities that will play a central role in building this infrastructure.\nRequired Qualifications\n5+ years of professional experience as a frontend engineer\nProduction development experience using React and TypeScript\nExperience designing frontend architecture, including state management, directory structures, and testing strategies\nProven experience implementing frontend applications with security considerations, including XSS, CSRF, and CSP\nPreferred Qualifications\nProfessional experience with Web3 or blockchain-related products, such as MetaMask or WalletConnect\nExperience developing browser extensions, including Chrome Extensions and Manifest V3\nHands-on experience using Web3 libraries such as ethers.js, viem, or wagmi\nExperience building and maintaining design systems\nIdeal Candidate Profile\nPassionate about creating meaningful change in the world through new technologies\nStrong interest in technology, with the ability to continuously learn, apply new knowledge, and use technology to drive both organizational and business growth\nMotivated by bringing people across the organization together to realize a shared vision and embed a strong engineering culture\nUnderstands the broader nature of software engineering and is willing to contribute beyond implementation alone\nAble to define a meaningful vision in an environment where little has yet been established and drive it through to 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