Jobs in Tokyo
Tokyo is the heart of Japan's job market and home to its most international workplaces. Browse roles across every industry from global startups to established enterprises, many offering visa sponsorship and English-speaking environments.
616 open positions
Refine with filters →ML Operations Engineer (AI/LLM) - Mercari
MercariFor more details, see the Overview of Our Positions section on our Careers site. As an MLOps engineer on the AI/LLM team, you will own how our machine learning and LLM models reach production and stay healthy there in our cloud-native environment. Your focus is the production serving, deployment, and operations that turn models into reliable, cost-efficient services, seamlessly integrating with our machine learning operations to serve tens of millions of users. Build and operate the production ML serving and Data Orchestration platform behind Mercari Group's AI and LLM features, serving tens of millions of users. Drive the strategy for model inference at scale, bridging the gap between complex data retrieval and fast-moving ML model inference to ensure high-performance, cost-effective service delivery. Shape Mercari's next-generation LLM serving stack, from inference optimization (quantization, dynamic batching, KV caching) to the evaluation and execution infrastructure needed for emerging agentic AI workloads.
Data Platform FinOps Specialist - Data Platform Department (DPD)
RakutenAs a Data Platform FinOps Specialist at Rakuten Group's Data Platform Department, you will drive the FinOps & Cost Optimisation function for data workloads - BigQuery, Databricks, Azure, and Snowflake - across over 70 business units. You will build cost-visibility dashboards, operate the monthly FinOps review cycle, implement GCP committed-use discount strategies, and translate spend data into actionable optimisation recommendations that directly reduce platform unit costs. You will build and maintain cost visibility dashboards covering BigQuery (slots and on-demand), Databricks DBU, and Snowflake credit consumption, broken down by BU, team, project, and workload. You will own the spend attribution model - implement chargeback and showback frameworks so BU finance teams can see and own their data platform costs. You will identify and act on GCP CUD (Committed Use Discount) optimisation: analyse slot commitment vs. on-demand patterns and recommend right-sizing and reservation changes. You will run monthly unused-asset cleanup cycles: identify idle datasets, dormant pipelines, and over-provisioned clusters, and coordinate decommission with data owners. You will operate the monthly FinOps review with BU finance stakeholders - prepare spend summaries, variance analysis, and savings tracking. You will instrument GCP billing APIs and Dataplex cost metadata to automate cost tagging and anomaly alerting. You will partner with the Platform Engineering team to embed FinOps guardrails in CI/CD pipeline templates (cost estimation pre-deploy, budget alerts). You will contribute to the platform unit economics model - cost per query, cost per pipeline run, and cost per BU workspace.
Rail Consultant
ArupThe Arup rail business in Japan covers three areas (advisory, infrastructure and systems engineering). Advisory encompasses strategy consulting, financial consulting, management consulting, operation consulting and foresight services. Infrastructure and railway systems relate to design, engineering and technical consultancy at corporate and project level, covering civil engineering for railway infrastructure (railway stations, track works, etc.), E&M systems (signalling, rolling stock, traction power, communications, etc.), and systems engineering in railway projects (project management, system assurance, quality assurance, testing & commission, etc.). This position’s primary focus points are: Work at consultant level on advisory projects and engineer level on engineering and consultancy projects within the Arup railway business. Manage projects including technical delivery and service performance. Focus on advisory projects as team member or consultant. Primary focus domain covers (but is not limited to) government-commissioned research related to railways. Support (depending on skills and project nature) rail engineering projects related to the Arup railway business. Support the infrastructure business in rail systems capacity, e.g. providing domain skills on interfaces to railway systems. Manage (depending on skills and project nature) the production of drawings, plans, reports and other deliverables. Coordinate and liaise with external parties in producing advisory deliverables and consultancy to clients. Assist Business Development and Sales activities performed by the Team. Interface with Clients, Team and other stakeholders during project delivery and other activities. At Arup, you belong to an extraordinary collective – in which we encourage individuality to thrive. Our strength comes from how we respect, share and connect our diverse experiences, perspectives and ideas. You will have the opportunity do socially useful work that has meaning – to Arup, to your career, to our members and to the clients and communities we serve.
Sales Executive
Marriott InternationalDrives revenue to achieve Hotel’s topline goals for each of their represented hotels by proactively soliciting all business segments; to include new business from small business accounts, sourcing new accounts, identifying new targets, and re-soliciting past business leads. Focuses on properties BT Pricing strategy. Provides property support by coordinating and executing property internal mining efforts at assigned hotels. Partners with Leadership to ensure competitive sales strategies are in place for the hotel and stay competitive within the market by aligning on sales activities to generate business and communicate real-time competitor intel. Reports directly to Property Sales Leader (ASL or DOS/DOSM) and works closely with the hotel General Managers, focuses on sales driven tasks. May work with Local Sales and U.S. Account Sales/GSO teams to drive production from targeted high priority accounts including maximizing special corporate business within the represented market place.
Lead Solutions Consultant | APJ
DeepLAs the Lead Solutions Consultant for APJ, you will be a senior technical voice for DeepL's full product range across the region. Based in Japan, you will spend most of your time working with Japanese enterprise customers, while also leading and supporting strategic opportunities elsewhere across APJ. This spans AI translation, Language AI workflows, APIs, and DeepL Voice for real-time multilingual communication. This is a hands-on role. You will work directly with the product, building demos, prototypes, and proof-of-value environments, not only producing materials about it. You will sit at the intersection of enterprise strategy, solution architecture, and complex deal execution, engaging directly with enterprise customers, partners, and key stakeholders from day one. Working in close partnership with Account Executives, Marketing, Product, and Customer Success, you will deliver tailored solutions that meet the needs of clients across the region. This is a small team, which means the scope for individual impact is unusually large. The team has built a foundation to work from, and there is still plenty that no one has had the capacity to build yet. We are looking for someone who can create what is missing and improve what already exists, taking a leading role in the playbooks, standard demo assets, and discovery frameworks the whole team relies on. Widening the conversation from individual use cases to enterprise workflows and business outcomes is also a core part of the role.
Account Director, Enterprise - Tokyo
OpenAIOpenAI’s mission is to build safe artificial general intelligence (AGI) which benefits all of humanity. This long-term undertaking brings the world’s best scientists, engineers, and business professionals into one lab together to accomplish this. In pursuit of this mission, our Go To Market (GTM) team is responsible for helping customers learn how to leverage and deploy our highly capable AI products across their business. The team is made of Sales, Solutions, Support, Marketing, and Partnership professionals that work together to create valuable solutions that will help bring AI to as many users as possible. Our Sales team has a unique mission to help customers understand the deep impact that highly capable AI models can bring to their business and users. This role is a mixture of technical understanding, vision, partnership, and value-driven strategy. You’ll be a key driver of opportunities through the entire sales cycle, from pipeline generation to closure. You’ll work with researchers, engineers, and solution strategists to help customers evolve their industry with AI. You’ll also collaborate with business partners to support customers’ business transformation and growth. This role is based in Tokyo, Japan. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. In this role, you will: Manage key accounts, developing and executing strategies for a comprehensive account plan based on customers’ business priorities and growth opportunities. Lead our enterprise prospects’ journeys from consideration to successful deployment. Partner with solutions and research engineering to build and execute complex customer programs and projects. Collaborate with business partners to generate opportunities, develop joint proposals, and support deployment, expanding customer value and business opportunities. Own a consumption revenue target. Manage consumption revenue forecasts. Analyze key account metrics to create reports and provide insights to internal and external stakeholders. Closely monitor the industry landscape (people, competitors, partners, etc.) to contribute to product roadmap and other corporate strategies. Collaborate with solutions, marketing, communications, business operations, people operations, finance, product management, and engineering. Support the recruitment and onboarding of other teammates. Support the development of company culture.
IT Analyst – Engineering Applications
iSpaceispace, inc. is looking for IT Analyst – Engineering Applications to join our growing internal IT team. IT Analyst will be responsible for managing, supporting, and continuously improving business-critical engineering, manufacturing, ERP (Enterprise Resource Planning), and MRP (Manufacturing Resource Planning) systems used across the organization. The role supports the complete lifecycle of various engineering and manufacturing applications at a global level, including CAD, PLM/PDM, ERP, MES, MRP, engineering simulations, requirements management, and project engineering platforms. The analyst serves as the primary liaison between IT and Engineering, Manufacturing, Supply Chain & Operations, ensuring applications effectively support product development, procurement, production planning, inventory management, and mission execution. The role will focus on integrating and optimizing our ERP system, MES system, and the various engineering platforms to create a seamless end-to-end digital platform from design through manufacturing and operations.
Operations Management - Quality Management Office, Commerce & Marketing Company (C&M)
RakutenThe Rakuten Group offers over 70 diverse services worldwide, including E-commerce, Travel, Digital Content, and Fintech (Credit Cards, Banking, Securities, E-money, and Mobile Payments), as well as Mobile Carrier services and professional sports. By organically linking these services through our membership base, we have built a unique "Rakuten Ecosystem" that is unlike any other. Rakuten Travel is one of the largest Online Travel Agents (OTA) in Japan, operating a platform that connects users with accommodation facilities and transportation services. The Quality Management Office acts as the "guardian" of our operations, overseeing critical functions such as contracts, legal compliance, credit management, and process improvement. To support our rapid business expansion fueled by the surge in inbound travel demand, we are strengthening our organization to build a robust operational foundation for future growth. Rakuten Travel is rapidly expanding its business with a core focus on capturing inbound demand, aiming to become the "No. 1 Online Travel Agency (OTA) in Asia." Amidst this growth phase, it is an urgent priority to strengthen our organizational structure to support our management foundation and accelerate business expansion from the back office. We are currently strengthening our team to further optimize and streamline our legal debt management operations. We are looking for a core member to take ownership in building and improving these critical business processes. In this position, you will primarily be responsible for handling legal management cases (such as bankruptcy, civil rehabilitation, and attachment/seizure) and managing receivables. We are seeking a highly motivated individual who can lead the transformation of business processes through the use of IT and technology, and who is eager to drive our business growth from the back office. You will play a critical role in supporting the backbone of our platform during a period of significant inbound growth. This is a high-impact position where your work directly enables the company's expansion. Gain a truly global business perspective by engaging with both domestic and international properties, allowing you to develop a deep understanding of cross-border operations. You will gain exposure to a wide range of domains-including contract management, legal affairs, debt recovery, and business process re-engineering. This will allow you to deepen your functional expertise while simultaneously cultivating a comprehensive management mindset. Leverage the Rakuten Group’s advanced AI technology and vast big data to lead the transformation of our business processes. In this environment, your ideas can directly translate into measurable improvements in organizational productivity. In this position, you will be responsible for both the execution of legal debt management and the optimization and enhancement of related business operations in the following areas: Legal Debt Management: Handling legal matters, including bankruptcy, civil rehabilitation, and attachment/seizure proceedings. Managing and recovering receivables for both domestic and international properties. Operational Optimization & Process Improvement: Planning and driving projects for workflow automation and business process streamlining. Strengthening management systems through the strategic implementation of IT solutions.
Senior Consolidated Accounting Officer
iSpaceispace is seeking a Senior Consolidated Accounting Officer. The main responsibilities include financial closing operations, disclosure documents, and responding to accounting audits.
Technical Program Manager, Camera Components
AppleHere at Apple we don’t just create products — we create the kind of wonder that’s revolutionized entire industries. It’s the diversity of our people and their ideas that inspires the innovation that runs through everything we do, from amazing technology to industry-leading environmental efforts. Join the Product Technical Operations at Apple, and help us leave the world better than we found it. You will take the lead in driving technical, operational, factory, and quality issues related to camera components (substrates, flexure, VCM) from the earliest stages of NPI, engineering builds, ramp up and sustaining product lifecycles. You will work with camera module design and process teams to quickly resolve technical and operational issues and interface between sub-component vendors and downstream module integrators. This role is based in Japan and is expected to operate as a hands-on factory leader spending significant time on-site at vendor facilities across Eastern Asia, directly leading, designing, and directing factory teams to solve problems in real time. The TPM is expected to be the factory expert on the ground, driving execution and issue resolution directly with vendor operations and engineering teams. The scope covers all camera components (focus on VCM) used in all cameras and all systems.