Technical Project Manager in Tokyo who owns enterprise wallet and payment-platform projects end to end — requirements definition, external vendor management, releases, and ongoing operations — reviewing specs, code, estimates, and acceptance tests while coordinating customers, business stakeholders, legal, and dev vendors. Requires a web/API development background and daily use of LLMs like Claude
You will take ownership of enterprise wallet and payment-platform projects from requirements definition through vendor management, release, and ongoing operations. You will review technical specifications, code, estimates, acceptance tests, and operational processes; coordinate customers, business stakeholders, legal, and external development vendors; and support technical presales.
Responsibilities
Lead Wallet Core and Payment Core projects, managing scope, schedule, quality, and cost
Manage external development vendors, including specification communication, estimate evaluation, progress tracking, issue management, deliverable review, and acceptance
Review requirements, API specifications, and acceptance tests
Coordinate integration specifications with customer systems
Manage releases, including customer impact communication, procedures, rehearsals, production deployment, and post-release reporting
Design monitoring, incident response, inquiry flows, and change management, and lead ongoing operations
Translate legal and compliance considerations into system requirements
Support technical presales by assessing feasibility, estimated effort, and risks
Requirements
Have 3+ years of practical software-development experience with web systems or APIs
Read code and API specifications and independently assess design issues and estimate validity
Understand web-backend fundamentals including databases, authentication and authorization, external API integration, and asynchronous processing
Have led at least one enterprise customer system-development project from specification definition through release with responsibility for quality and schedule
Have experience aligning requirements and priorities among customers, sales, and development stakeholders
Use coding agents or LLMs such as Claude Code daily for research, documentation, and code comprehension
Have experience identifying and correcting errors in AI output
Benefits
Social insurance
Free office drinks
Refresh leave every two years
Internal recreation subsidy of JPY 8,000 per quarter