About the Role
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.
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
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
Benefits
•Social insurance
•Free office drinks
•Refresh leave every two years
•Internal recreation subsidy of JPY 8,000 per quarter
•Company social events once or twice per year
•Gym-use subsidy
•Influenza vaccination subsidy
•Marriage leave
