From landing page to a SaaS that takes payments, in production.
Kaizen Kyoto Capital needed more than a website for its systematic crypto trading signals: subscribers had to pay, get gated access, see verified performance, and the team needed a back-office, all without security gaps.
→ Public marketing site with SEO (performance page, Learn hub, FAQ schema, sitemap)
→ 16 Paddle subscription plans (trading + investment, monthly and annual), activated automatically by webhooks after payment
→ Client dashboard: live signals, performance report, mandatory 1% risk framework, subscription management
→ Admin console: KPIs, users, revenue analytics, Paddle sync and audit log
→ Security: admin 2FA, GDPR export/delete, webhook signature checks, rate limiting, 43 automated tests with CI, security score 84/100
Live: kaizenkyotocapital.com. Stack: Next.js 14, TypeScript, Prisma, PostgreSQL (Neon), NextAuth, Paddle, Upstash Redis, Recharts.
Launching a SaaS or a paid membership? I build the whole thing, from landing page to billing and admin. Message me with your idea and I'll send a free scope and timeline.
0 likes · 0 views · Nov 13, 2026
Full-stack SaaS in production: Paddle subscriptions, dashboard, admin, security.