Overview
Shangence is the second product I built solo. It helps people planning a business in Japan understand risk, cost, validation, exit criteria and legal considerations.
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SaaS / Commercial service
Shangence
A business-risk assessment service for the Japanese market, with a 7-step assessment, rule-based scoring, Stripe JPY payments, PDF reports and an admin console.
LiveProduct planning, assessment logic, frontend, backend, payments, PDF reports, admin, legal pages and deployment
Tech Stack
Next.jsTypeScriptPrismaPostgreSQLStripeZodPDFVitest
My Role
Product planning, assessment logic, frontend, backend, payments, PDF reports, admin, legal pages and deployment
Problem
The assessment needed to be clear, the payment flow trustworthy, and the score reproducible rather than generated text.
Solution
I built a 7-step form, rule engine, Stripe JPY payment flow, PDF reports and an admin console for orders, refunds and audit logs.
Result
Built the commercial loop from free assessment to sign-up, paid report, PDF download and admin operations.
My Role
- 商业设计
- 诊断流程
- 规则评分
- Stripe 支付
- PDF 报告
- 后台与审计
- 法务页面
Problem
- 评分透明性
- 支付与权限
- 隐私信息脱敏
- 退款与审计
Solution
- 评分由规则引擎计算
- Stripe 日元支付
- 订单和报告权限绑定
- 后台支持审核与退款
Architecture
Next.js App Router 承载前台与后台；Prisma / PostgreSQL 管理诊断、订单、权限和审计；Stripe 处理日元支付；PDF 模块生成详细报告。
- Next.js
Background
Shangence is a business-risk assessment service for people planning to start a business in Japan.
Stack
- Next.js App Router
- Prisma / PostgreSQL
- Stripe JPY
- PDF reports
- Zod / Vitest
Takeaway
This project went beyond forms. A commercial service has to handle payments, permissions, refunds, privacy, audit logs and legal pages as one system.
