{"id":492590,"url":"https://alion.io/job/datachain-product-security-engineer-lead-engineer","title":"Product Security Engineer - Lead Engineer","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":"2026-10-27T05:46:45Z"}},"role":"Security","role_family":"Security","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":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Grafana","optional":false},{"name":"OpenTelemetry","optional":false},{"name":"Argo Workflows","optional":true},{"name":"ArgoCD","optional":true},{"name":"Azure","optional":true},{"name":"Azure Cosmos DB","optional":true},{"name":"Chakra UI","optional":true},{"name":"CI/CD","optional":true},{"name":"Cosmos","optional":true},{"name":"Ethereum","optional":true},{"name":"GitHub Actions","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"Kotlin","optional":true},{"name":"Kubernetes","optional":true},{"name":"Next.js","optional":true},{"name":"PostgreSQL","optional":true},{"name":"React.js","optional":true},{"name":"Rust","optional":true},{"name":"Solidity","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-07T02:03:03Z","employer_posted_date":null,"last_verified_at":"2026-09-07T02:03:03Z","board_verified":false,"closed_at":null,"days_open":50,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":50},"description":"Job Overview\n1. Background\nDatachain is simultaneously taking on the challenge of launching multiple businesses with the potential to reach unicorn or even decacorn scale. To support these initiatives, we are proactively working to build and operate a healthy, scalable engineering organization.\nBuilding an engineering organization capable of supporting these new businesses within a short period of time is an extremely challenging mission.\nTo achieve this, we aim to expand our team, create an environment where each individual can perform at their best, and communicate what makes our organization successful. By doing so, we seek to establish a repeatable model for building strong engineering teams and create a sustainable cycle that attracts even more talented people.\nAt Datachain, technical excellence directly translates into business strength, making highly skilled engineers essential to our success. While this is a highly demanding mission, the role offers a rare opportunity to build a valuable career while helping create a world-class engineering organization.\n2. Key Responsibilities\nAs the Lead Product Security Engineer, you will play a central role in building new systems required to support major new business initiatives and establishing the ideal security posture for those systems.\nYou will be responsible for defining the security strategy and direction necessary to achieve a high level of security, working closely with both engineering team members and stakeholders across the organization. In other words, this is a leadership role responsible for driving product security across the company.\nFrom an implementation perspective, the role requires not only knowledge of standard web application infrastructure, but also an understanding of financial systems and blockchain-specific security considerations. You will be expected to establish and maintain a robust security architecture capable of meeting the high security requirements of these domains.\nScope of Changes to Responsibilities:\nDuties may be changed in accordance with the company’s business needs.\n3. Background and Our Challenge\nIn next-generation financial systems, backend and blockchain technologies are critical components of the product. They play an essential role in ensuring scalability, maintainability, security, and effective integration with other technical domains.\nThese areas require engineers to continuously deepen their expertise while supporting stable, sustainable development over the long term. In this role, you will be expected to take a medium- to long-term perspective, contribute to technology selection and improvements to development processes, and help strengthen 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.\nDatachain has been a truly technology-driven company since its founding in 2018. Our mission has been to create globally competitive, deep-tech infrastructure originating from Japan and establish it as the de facto standard.\nThe technological expertise we have accumulated over the years has created significant opportunities for us today. However, because these markets have the potential for substantial global impact, we also expect competition to intensify.\nWe intend to seize this unique opportunity and build products that can change the world. To achieve this, we are building new engineering teams and actively recruiting highly skilled engineers who can become core members of the organization.\nReference Information and Related Links\nTechnologies currently in use\nThe technology stack may vary by project.\nBlockchain\nLanguages: Go, Rust, Solidity, Kotlin\nNetworks: Ethereum, BNB Chain, Cosmos, etc.\nServer-Side / Backend Development\nLanguage: Go\nDatabase: PostgreSQL (Azure Cosmos DB)\nFrontend Development\nTypeScript\nNext.js\nwagmi\nChakra UI\nInfrastructure / SRE\nCloud: Azure, Kubernetes\nCI/CD: GitHub Actions, Argo CD, Argo Workflows\nObservability: OpenTelemetry, Grafana\nRequired Qualifications\nExperience with cloud application security testing and vulnerability assessments\nExperience working for a security vendor, or equivalent security expertise\nPractical experience related to the Act on the Protection of Personal Information (APPI), data protection, or data governance and controls\nStrong interest in blockchain technology\nPreferred Qualifications\nExperience in security roles within the financial or FinTech industry\nKnowledge of or experience with system audits and information security audits\nExperience designing, operating, or leading incident response processes\nExperience establishing information security or related organizational functions\nExperience sharing technical knowledge or publishing technical content in the engineering domain\nExperience developing blockchain-related systems or applications\nIdeal Candidate Profile\nAble to assess the current state of systems, define the desired future state, and lead teams in building high-quality systems\nAble to balance business, organizational, and technical considerations and clearly articulate what should be done from a technical perspective\nAble to collaborate with engineers and Tech Leads across the company to shape a strong engineering culture\nProactively works to deepen technical expertise and takes the initiative in 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