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SaaS & Product Development
Multi-Tenant AuthStripe BillingAdmin Panel

SaaS MVP Development

Your SaaS Idea Stays Stuck Until You Ship Something Real

4–6
Weeks to Launch
Production-ready
100%
Code Ownership
No vendor lock-in
95+
Lighthouse Score
Performance target
$0
Replatforming Cost
Scales past $10K MRR
What SaaS MVP Development Actually Delivers — And What It Skips

Your MVP ships in 4–6 weeks with auth, billing, and a working dashboard—not a prototype riddled with placeholder screens. We build on Next.js, Supabase, and Stripe because your stack needs to survive first revenue, not collapse when you hit your first hundred users. Multi-tenant row-level security ships from day one so you're not retrofitting data isolation after a breach scare. Subscription webhooks are tested against failure states most boilerplates ignore—silent charge failures, plan downgrades during billing cycles, seat enforcement when a user invites their sixth teammate. You own the repo, deploy to Vercel or your own infra, and your team can extend it without decoding someone else's framework. This isn't about cramming features—it's about shipping the core loop that lets you charge money and gather feedback before your runway burns out.

プロジェクトが失敗する理由

No-code tools hit a wall around $5K–$10K MRR Replatforming mid-growth is expensive, slow, and burns runway you can't afford to waste.
Boilerplate starters skip multi-tenancy and row-level security When data leaks between tenants, you lose trust fast — and the liability exposure is real.
Stripe looks straightforward until webhooks start failing silently Customers get charged but lose access. Or they get free access indefinitely. Neither is good.
Hiring a full-stack team for an MVP eats 3–6 months of runway You run out of money before you've even validated whether anyone wants the thing.
Without audit logging or an admin panel from day one, support tickets pile up and your team has zero visibility into what's actually happening with user accounts. Support tickets pile up with zero visibility into user state
Transactional emails are almost always an afterthought Users miss onboarding steps, don't see trial expiration warnings, and churn over billing failures that a simple email would've prevented.

コンプライアンス

Multi-Tenant Row-Level Security

Supabase RLS policies enforce data isolation at the database level. Doesn't matter what the application does — one tenant can't read or touch another tenant's data.

Stripe Webhook Resilience

Idempotent webhook handlers with signature verification and retry logic. Failed events get logged and reprocessed automatically. No silent billing failures, no manual digging through logs.

Authentication & Authorization

Supabase Auth with magic links, OAuth providers, and role-based access control. Team invitations, seat management, and session handling are built in from day one — not bolted on later.

Subscription Billing Engine

Monthly, annual, and usage-based billing through Stripe with customer portal integration. Proration, trial periods, and dunning flows all handled correctly, not approximately.

Audit Logging

Every state change — plan upgrades, permission changes, data modifications — gets logged with a timestamp, the actor who made it, and the relevant context. Essential for debugging. Increasingly necessary for compliance.

Transactional Email via Resend

Welcome sequences, trial expiration warnings, billing receipts, and password resets. Templated, branded, and actually deliverable — not landing in spam folders.

構築する内容

Build multi-step onboarding that activates your core feature in under 90 seconds

Your users finish onboarding and hit value in one session instead of abandoning mid-flow

Ship a dashboard with real-time usage metrics your users check daily

Your dashboard becomes the daily login destination that drives retention and expansion

Deploy an admin panel with user impersonation and subscription override controls

Your support team resolves account issues in 60 seconds instead of escalating to engineering

Integrate Stripe with webhook handling that survives payment failures and retries

Your billing runs silently—customers stay active through card failures and plan changes

Enforce team seats and role permissions tied directly to subscription tier

Your team collaboration features scale from solo founders to 20-seat enterprise trials

Expose API routes with rate limiting and key management ready for third-party tools

Your API attracts integration partners and power users without a second build phase

私たちのプロセス

01

Product Scoping

We map your core user journey, define the data model, and nail down the billing logic before anything gets built. You get a technical blueprint and a Figma wireframe kit before a single line of code gets written.
Week 1
02

Infrastructure & Auth

Supabase project setup with RLS policies, authentication flows, Stripe account connection, and a CI/CD pipeline on Vercel. The foundation ships first.
Week 2
03

Core Features & Billing

User dashboard, onboarding flow, subscription billing with webhook handlers, and transactional email templates. This is where the product actually starts to feel real.
Weeks 3–4
04

Admin Panel & Polish

Internal admin tooling, audit logging, error monitoring, and UI polish. Every edge case in the billing flow gets tested against Stripe's test clock.
Week 5
05

Launch & Handoff

Production deployment, domain configuration, monitoring dashboards, and full documentation. Then we stick around for 30 days of post-launch support.
Week 6
Next.js App RouterSupabaseStripeResendVercelTypeScriptTailwind CSS

よくある質問

SaaS ボイラープレートやスターターキットとはどう違うのか？

ボイラープレートは出発点を与えてくれますが、難しい部分—マルチテナント RLS、webhook の耐障害性、管理ツール、そして実際のプロダクトロジック—をスキップしています。私たちは、テンプレート満載の TODO コメントではなく、あなたの特定のビジネスモデルの周りに構築された本番環境対応のアプリケーションを提供します。

非技術系の創業者と協力できますか？

もちろんです。私たちはすべての技術的決定を処理し、週次同期中に平易な言葉で説明します。あなたはユーザーとビジネスモデルに集中できます。引き渡すコードベースには、シニアデベロッパーなら誰でも理解して実行できるほど明確なドキュメントが付属しています。

MVP を超えてスケーリングが必要になったらどうなるか？

アーキテクチャはあなたと一緒に成長するように構築されています。Vercel 上の Next.js App Router は水平スケーリングが可能です。Supabase は適切なインデックスを使用して数百万行を処理します。Stripe はあなたが投げるあらゆる課金量を処理します。V2 機能の準備ができたら、関係を継続するか、社内チームにハンドオフするか—どちらが理にかなっているかを判断できます。

ソースコードは私が所有できますか？

完全にできます。リポジトリは初日からあなたの GitHub 組織内にあります。あなたはすべてのコード、すべてのデータベース移行、そしてすべてのデプロイメント構成を所有しています。ライセンス料、私たちからの継続的なプラットフォーム料金、ベンダーロックインはありません。

Stripe webhook の失敗にはどのように対応しますか？

すべての webhook エンドポイントは Stripe の署名を検証し、イベントをべき等的に処理し、失敗をモニタリングスタックにログします。リトライロジックとデッドレターハンドリングを組み込んでいるため、失敗したイベントは無言でドロップされるのではなく、表示されて再処理されます。その後、Stripe のテストクロックに対してすべてをテストして、失敗した請求や月中のプラン変更などのエッジケースに対応します。

30 日間のローンチ後サポートに含まれるもの？

バグ修正、課金フロー問題、デプロイメント サポート、初期ユーザーからのフィードバックに基づくマイナー調整です。最初の 1 ヶ月を通じてエラー率と webhook ヘルスをモニタリングします。これは有料アドオンではありません—すべての SaaS MVP エンゲージメントに含まれています。最初の 30 日間は常にエッジケースが表面化するからです。それはそういうものなのです。

SaaS MVP Development from $12,000
Fixed-fee. 30-day post-launch support included.
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