{"id":492591,"url":"https://alion.io/job/datachain-blockchain-engineer-tokenized-deposit-business","title":"Blockchain Engineer (Tokenized Deposit 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":"2026-10-26T05:57:25Z"}},"role":"Web3","role_family":"Web3","seniority":null,"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":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"DeFi","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"Rust","optional":false},{"name":"Smart Contracts","optional":false},{"name":"Solidity","optional":false},{"name":"Amazon Aurora","optional":true},{"name":"Amazon Kinesis","optional":true},{"name":"AWS Lambda","optional":true},{"name":"C#","optional":true},{"name":"C++","optional":true},{"name":"CloudFormation","optional":true},{"name":"ESLint","optional":true},{"name":"Java","optional":true},{"name":"JavaScript","optional":true},{"name":"Kotlin","optional":true},{"name":"Ktor","optional":true},{"name":"Layer 2","optional":true},{"name":"MSW","optional":true},{"name":"React.js","optional":true},{"name":"Rollup","optional":true},{"name":"Rollup","optional":true},{"name":"Spring Boot","optional":true},{"name":"Storybook","optional":true},{"name":"Terraform","optional":true},{"name":"TypeScript","optional":true},{"name":"Vite","optional":true},{"name":"Vitest","optional":true},{"name":"Vue.js","optional":true},{"name":"Zk-SNARKs","optional":true},{"name":"Zk-STARKs","optional":true}],"status":"live","first_seen_at":"2026-09-07T02:02:09Z","employer_posted_date":null,"last_verified_at":"2026-09-07T02:02:09Z","board_verified":false,"closed_at":null,"days_open":49,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":49},"description":"Job Overview\n1. Role Overview\nAs part of a new business initiative building next-generation financial systems, you will work with the team on the design, development, and operation of blockchain-related systems.\nYou will collaborate closely with Product Managers and engineers across different technical domains, leveraging a broad range of technologies to build financial infrastructure designed for global deployment.\nYour responsibilities will span the design of highly available APIs, optimization of infrastructure through managed cloud services, development of CI/CD pipelines, and technical documentation. You will contribute to building a development environment that balances speed with quality.\nIn this role, you will also help define the underlying technical direction, development processes, and architectural principles that enable teams to operate autonomously. When requirements are ambiguous or involve emerging technology domains, you will work with stakeholders to build consensus and translate business needs into concrete technical solutions.\n2. Key Responsibilities\nDesign, develop, and operate blockchain-related systems\nDesign and develop smart contracts\nResearch and introduce new technologies\nEnsure system scalability, maintainability, and security\nDefine requirements and specifications and build consensus among relevant stakeholders\nPerform other related responsibilities as required\nScope of Changes to Responsibilities:\nDuties may be changed in accordance with the company’s business needs.\n3. Why This Role Is Exciting\nJoin as a core member from the early stages of a new business initiative\nContribute to building next-generation financial infrastructure for global markets\nPlay an active role in technology selection and the development of engineering processes\nWork hands-on with cutting-edge technologies, including blockchain\n4. Technology Stack and Development Environment\nFrontend\nTypeScript / Vite / Biome / ESLint / Vitest / Storybook / MSW / Sentry, etc.\nBackend / Blockchain\nGo / Solidity / Rust (technology stack currently under evaluation)\nInfrastructure\nAWS (CDK / Lambda / Aurora / Kinesis, etc.)\n5. Team and Members\nYou will work in an international environment alongside team members from diverse professional and cultural backgrounds.\nAs part of a cross-functional team, you will collaborate closely with colleagues while adopting modern software development practices to build high-quality products.\nTech Lead\nHas experience improving security and performance at a cryptocurrency exchange.\nBrings broad expertise across Project Management, Product Ownership, UI/UX, and other areas, and plays a key role in bridging technology and business.\nBusiness Lead\nFormerly with JPMorgan and currently leads the digital currency payments business as Vice President of Payment.\nHolds the CAMS (Certified Anti-Money Laundering Specialist) certification.\n6. Background and Our Challenge\nBackend and blockchain technologies are critical components of next-generation financial systems.\nThey play an essential role in ensuring product scalability, maintainability, security, and seamless integration with other technical domains. These areas require deep technical expertise as well as a long-term perspective to support stable and sustainable product development.\nIn this role, we expect you to contribute as an engineer with a medium- to long-term perspective, helping improve technology selection and development processes while strengthening our in-house engineering capabilities.\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 currently in the early stages of building a new category of financial infrastructure. Our lean Product Management team independently determines what to build, how to prioritize implementation, and how to move initiatives forward by integrating regulatory, technological, and operational perspectives.\nWe are looking for someone who can help shape and drive the next stage of this initiative with us.\nRequired Qualifications\nCandidates must have experience demonstrating strong fundamentals in software implementation, including one or more of the following:\nSoftware Engineering Fundamentals\nExperience developing libraries, frameworks, middleware, or similar software components\nExperience working on technically challenging systems involving:High traffic or high load, such as social games or ad-tech platforms\nHigh reliability, such as data platforms or FinTech systems\nDistributed systems, such as blockchain or IoT platforms\n\nStrong foundational knowledge of software engineering, including algorithms, data structures, networking, security, and design patterns\nBlockchain Development\nExperience developing products using blockchain technologies, including one or more of the following:\nExperience designing and implementing smart contracts using technologies such as Solidity or Rust\nExperience building and operating blockchain nodes or related infrastructure\nExperience implementing wallet integrations, transaction signing, or key management\nExperience contributing to services or products utilizing blockchain technologies, such as Web3, DeFi, or NFTs\nCloud Infrastructure\nExperience designing and operating systems using major cloud platforms such as AWS, GCP, or Azure\nExperience using managed services across areas such as compute, storage, databases, networking, serverless computing, containers, and messaging\nLanguage Requirements\nNative or business-level Japanese proficiency\nEnglish proficiency sufficient to understand technical documentation related to systems engineering and apply that knowledge in implementation\nPreferred Qualifications\nExperience in any of the following areas is preferred.\nBlockchain and Cryptography\nZero-Knowledge Proofs, including zk-SNARKs and zk-STARKs\nMulti-Party Computation (MPC) or homomorphic encryption\nToken design and smart contract security audits\nLayer 2 / Rollup technologies and distributed consensus algorithms such as PoS and BFT\nDigital signatures, cryptographic technologies, and identity management, including Passkeys, ECDSA, BLS signatures, and ECIES\nProgramming Languages\nDevelopment experience using strongly typed languages such as Go, Rust, Kotlin, Java, C#, or C++\nFrameworks\nFrontend development using frameworks such as React or Vue\nBackend development using frameworks such as Express, Koa, Spring Boot, or Ktor\nInfrastructure and IaC\nExperience designing and building cloud environments using Infrastructure as Code tools such as Terraform or CloudFormation\nExperience developing or operating systems in the financial industry\nExperience designing, operating, or analyzing large-scale data platforms, including work related to data science\nExperience developing IoT or device-based systems using technologies such as Raspberry Pi, Arduino, or M5Stack\nEnglish\nAbility to communicate verbally in English\nIdeal Candidate Profile\nBusiness-Driven Technical Decision-MakingAble to understand business objectives and make flexible, appropriate technical decisions even when business conditions and requirements are changing.\n\nCollaboration and Contribution to the TeamAble not only to contribute directly to development but also to support autonomous engineering through active information sharing, discussion, and collaboration, helping team members grow together.\n\nKnowledge Sharing and Continuous ImprovementAble to improve the team’s overall technical capabilities and development efficiency through design practices, code reviews, documentation, and other knowledge-sharing initiatives.\n\n Proactive Problem Identification and ResolutionAble 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