Top Tech Jobs & Startup Jobs in Tokyo

Lead technical customer engagements for a B2B SaaS audience-measurement platform: gather requirements, design and implement data integrations, maintain ingestion pipelines (Airflow/Kubernetes), collaborate with sales, product and engineering, and act as trusted advisor to clients across Japan/Asia.

Own and improve Arc'teryx Japan's end-to-end post-purchase ecommerce operations, including order checks, fraud and payment exception handling, carrier coordination, promotions, review management, NPS and VOC programs. Provide post-purchase customer insights, build reports, monitor KPIs, and partner cross-functionally to optimize fulfilment and customer experience.

Lead the development and maturity of insider risk management capabilities. Design monitoring and detection across SIEM, UEBA, endpoint, identity, email, cloud, and network environments; investigate insider threats, compromised accounts, and suspicious activity; automate security workflows; validate detections; support audits and risk reduction; and partner with Legal, HR, Privacy, Compliance, and Technology. Provide technical leadership and mentorship while participating in 24/7 on-call operations.

Leads global supply planning and procurement for OEM and third-party finished goods. Responsibilities include S&OP, demand and supply alignment, risk management, MRP, inventory optimization, purchase order execution, Oracle data integrity, supplier performance, in-transit inventory, stakeholder reviews, and project delivery. The role also drives Kaizen process improvements and supports supply continuity in a regulated diagnostics environment.

Provide application and technical support for merchants using a cross-border eCommerce platform. Resolve and escalate complex production issues, collaborate with Tier 2 engineers and cross-functional teams, investigate logs, debug technical problems, work with SQL and relational databases, and identify root causes while managing multiple priorities and delivering service in English and Japanese.

Designs, deploys, and maintains Linux infrastructure across AWS EC2 and on-premises Proxmox environments. Manages Docker workloads, GitLab, internal platforms, LiteLLM, CI/CD pipelines, Terraform and Ansible automation, and GitOps workflows. Establishes monitoring, logging, alerting, backup, security hardening, and reliability practices. Leads incident response, root-cause analysis, documentation, patching, and performance tuning, including occasional weekend or after-hours maintenance. Supports AI/ML inference environments and may grow into a Lead DevOps Engineer role.

Source and engage talent across Japan by mapping companies, skills, and talent segments; building pipelines; conducting initial candidate conversations; and providing market intelligence. Partner with recruiters and hiring managers, maintain candidate data, track sourcing metrics, and develop long-term relationships with passive candidates. The role requires strong research, communication, organization, and relationship-building skills, plus Japanese and English fluency and familiarity with technology, enterprise software, SaaS, engineering, or sales markets.

Leads front-office IT business analysis and project management for Japan and global equities, including client onboarding, requirements gathering, system enhancements, testing, UAT, stakeholder communication, risk mitigation, vendor management, incident support, compliance applications, business continuity exercises, and regulatory reporting. The role coordinates business, development, support, offshore, and global teams while managing project deliverables, milestones, and operational changes.

Lead DayOne Japan’s data center development and operations, owning end-to-end delivery from site development to commissioning, daily facility operations and uptime, and full P&L. Manage project schedules, budgets, compliance and local utility/authority relationships; build and scale the Japan team; serve as primary contact for hyperscale customers; and collaborate with global leadership on pipeline, land acquisition, and long-term market strategy.

Develop and execute B2B marketing campaigns across digital and traditional channels for life sciences products. Responsibilities include analyzing campaign performance, coordinating internal and external partners, maintaining brand consistency, optimizing strategies, managing marketing automation and CRM tools, presenting to stakeholders, and translating complex technical information into compelling marketing messages.