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SaaS MVP Launch
Next.js + SupabaseAuth + Payments6-9 Week Delivery

SaaS MVP Launch — 6-9週間で本番環境へ

あなたのAIプロトタイプは、実ユーザーがアクセスした瞬間に壊れます

6-9
Weeks to Launch
Fixed timeline
£22K
Starting Price
Transparent, fixed-fee
95+
Lighthouse Score
Every build
0
Rewrites Needed
Production from day one
What You Actually Get When Your Prototype Graduates to Production

Your buyer signs up. Clerk authenticates them, Supabase enforces row-level permissions, Stripe captures their card, PostHog logs the activation event — and nothing breaks. A SaaS MVP launch takes your Lovable, Bolt.new, v0, or Claude Code output and rebuilds it on a named stack: Next.js for the frontend, Supabase for multi-tenant data, Clerk for auth, Stripe for billing, PostHog for analytics. Every integration is wired correctly from day one. No placeholder logic. No 'we'll add payments later' technical debt. You ship a real business — authentication that handles team workspaces, subscription billing with upgrade flows, feature flags for controlled rollouts, and deployment pipelines that don't require your intervention. Your prototype proved demand. This delivers the architecture that demand requires.

プロジェクトが失敗する理由

Your Lovable or Bolt prototype looks great in a screen recording Then real users show up and it falls apart. Early adopters churn before you've got enough traction to show investors anything meaningful.
AI-generated code skips the hard stuff — no auth, no row-level security, no payment integration Those gaps aren't just technical annoyances. They're trust killers, and they tend to surface at the worst possible moment.
Traditional agencies will quote you 6 months and $150K for a v1 Meanwhile, the market window you're trying to hit doesn't care about their timeline.
You've hired a few freelancers, each with their own preferred stack and patterns A year later, you're staring at a full rewrite. This is more common than anyone admits.
You launch with no analytics, no behavioral tracking, nothing No data on where users drop off, what features they actually use, or whether anyone's coming back.
Payment integration always gets pushed to the end Then it breaks. You can't charge customers, you can't validate willingness to pay, and closing your round gets a lot harder.

コンプライアンス

Clerk Authentication

Multi-tenant auth with SSO, MFA, and role-based access from Sprint Zero. We don't roll our own auth — Clerk handles session management, user metadata, and organization switching out of the box, so we're not reinventing something that's already solved.

Supabase Row-Level Security

Every database query is enforced by Postgres RLS policies. Users only see their own data. Your API surface stays protected even if client-side code gets compromised.

Stripe & Paddle Payments

Stripe handles core subscriptions and usage-based billing. If you're selling into Europe, Paddle's available for EU VAT compliance and merchant-of-record simplicity. Both wire into your auth layer for gated access.

PostHog Behavioral Analytics

Event tracking, session replay, feature flags, and A/B testing from day one. You'll know exactly where users drop off and which features are actually driving retention — not guessing after the fact.

Production Architecture

Next.js App Router with server components, edge functions, and ISR. Built for Vercel deployment with proper caching, error boundaries, and monitoring wired in from week one.

SEO & Performance Baseline

Server-rendered pages, structured data, and Core Web Vitals optimization aren't an afterthought — they're baked into the build. Your SaaS ranks and loads fast from the first deploy.

構築する内容

Graduate AI-generated prototypes into named-stack architecture that survives contact with production traffic

Your early adopters sign up, invite teammates, and stay — because authentication, permissions, and data isolation actually work

Rebuild Lovable, Bolt.new, v0, or Claude Code outputs on Next.js, Supabase, Clerk, Stripe, and PostHog

You collect real payment data from day one instead of pushing billing integration to 'phase two' and losing validation momentum

Implement multi-tenant data models with Supabase RLS so team permissions work correctly from launch

Your stack uses production-proven tools that any senior engineer can maintain — no bespoke frameworks only one person understands

Wire Stripe subscription billing and Clerk entitlements into a clean upgrade pipeline that charges customers reliably

You ship feature rollouts to 10% of users, measure impact, and expand — without coordinating deploys or breaking existing workflows

Deploy feature flag infrastructure with PostHog for percentage rollouts and dark launches without redeploying

Your behavioral analytics capture where users drop off, which features drive retention, and whether anyone's coming back for a second session

Configure Vercel preview environments, error tracking, and uptime monitoring before handoff

You hand investors a deployed product with real usage data, not a screen recording of a demo that breaks under load

私たちのプロセス

01

Audit & Architecture

We review your existing prototype, validate your data model, map your auth and billing requirements, and produce a technical spec with the exact stack configuration. No ambiguity. You know what you're getting before we write a line of code.
Week 1
02

Sprint Zero — Foundation

Supabase schema with RLS policies, Clerk integration, Stripe or Paddle billing skeleton, PostHog instrumentation, and a CI/CD pipeline. The unglamorous infrastructure work that makes everything else possible.
Weeks 2-3
03

Core Feature Sprints

One-week sprints building your core product workflows. Daily async updates, weekly demos. Each sprint ships a deployable increment to your preview environment — you're never waiting weeks to see progress.
Weeks 4-7
04

Launch Hardening

Performance optimization, security audit, error handling, edge cases, load testing. We're targeting 95+ Lighthouse scores and sub-200ms API responses. This is the week where we stop adding and start hardening.
Weeks 8-9
05

Ship & Support

Production deploy to Vercel, DNS cutover, monitoring verification, and 30 days of post-launch support. You get full source code, documentation, and a clean handoff to your team.
Week 9 + 30 days
Next.jsSupabaseStripeClerkPaddlePostHogVercelTailwind CSS

よくある質問

Lovableやbolt.newから『卒業』するとはどういう意味ですか?

Lovable、Bolt.new、v0などのAIコード生成ツールは、機能的なプロトタイプを素早く生成する点では本当に優れています。しかし一貫して本番環境の必須要素をスキップしています:行レベルセキュリティ、適切な認証フロー、ペイメントWebhookの処理、1000ユーザーでも崩れない設計です。卒業とは、プロトタイプから実際に機能しているUXパターンを抽出し、Next.js、Supabase、Clerk、Stripeなどのスタック上で再構築することです。6ヶ月後に完全な再構築が必要になる心配はありません。

カスタムバックエンドの代わりにNext.jsとSupabaseを使う理由は?

Next.jsはサーバー側レンダリングされたReactにエッジ関数、ISR、APIルートを1つのフレームワークで提供します。Supabaseはリアルタイムサブスクリプション、行レベルセキュリティ、エッジ関数を備えたPostgresを提供しているため、別のバックエンドサービスは不要です。一緒に使うことで、シニアReactデベロッパーなら誰でも保守できる本番SaaSへの最速パスが実現します。コードとデータベースは自分のものです。ロックインはありません。

Stripeの代わりにPaddleを使うことはできますか?

はい。Paddleは商品販売業者として、EU VAT、売上税、請求書を処理するため、複数国でのVAT登録が不要です。B2B SaaSでヨーロッパに売上がある場合はPaddleをお勧めします。米国中心またはusage-basedの請求モデルの場合はStripeをお勧めします。どちらもClerkと統合して利用権制御ができます。監査フェーズで顧客の実際の所在地に基づいた明確な推奨を提供します。

30日間の本番後サポート終了後はどうなりますか?

完全なソースコード、デプロイメント設定、ドキュメントをお届けします。コードベースは標準的なNext.jsとSupabaseで動作するため、有能なReactデベロッパーなら誰でも保守できます。本番後の継続開発をご希望の場合は、リテイナーパッケージを提供しています。ただし、目的は貴社チームまたは次の採用者への綺麗なハンドオフであり、当社への依存を続けることではありません。

固定料金の価格設定はスコープ変更でどう機能しますか?

スコープはWeek 1の監査で定義します:特定の機能、データモデル、統合です。固定料金はそのスコープをカバーしています。構築中に何かを追加したい場合、作業開始前にスコープと価格を別途決定します。不意の請求書なし、『予想より時間がかかった』が突然あなたの問題になる時間ベースの請求はありません。事前に費用が分かります。

非技術系の創業者と仕事をしていますか?

MVPクライアントのほとんどは非技術系または半技術系の創業者です。それが本当のポイント です — あなたは検証、顧客、資金調達に集中し、当社が設計決定を処理します。Jiraチケットではなく、平易な英語で週次デモを通じてコミュニケーションをとります。プルリクエストを確認する必要なく、何が構築されており、なぜかを正確に理解できます。

SaaS MVP Launch from £22,000
Fixed-fee. Named stack. 30-day post-launch support included.
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Next.js DevelopmentCore Web Vitals OptimizationWordPress to Next.js Migration

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