Web App Development
Full Stack Web App Development
One team. One codebase. Zero handoff delays. We own every layer — schema design, server logic, React UI, and cloud deployment — so your product ships without coordination overhead.
Why Full Stack Ownership Changes Everything
When a separate frontend team, backend team, and DevOps team each own a slice of your product, bugs hide in the gaps between them. A schema change breaks an API contract nobody told the UI team about. A deployment pipeline nobody owns stays broken for a week. Full stack development eliminates these invisible seams by putting a single senior engineer in charge of every layer end-to-end.
At Greta Agency we treat the entire vertical slice — PostgreSQL schema, Supabase Edge Functions, Next.js server components, React state, Tailwind UI, and Vercel deployment config — as one cohesive system. Every architectural decision is made with full context, so the database indexes match the query patterns and the API contracts match the component data needs from day one.
Our AI-assisted development workflow (what we call vibe coding) means we spend senior-engineer hours on architecture and business logic, not boilerplate CRUD endpoints or repetitive form validation. The result: a production-ready full stack app shipped in 3-7 days instead of 6-12 weeks.
Our Approach to Full stack web app development
Every project follows our 4-step vibe-coding process — AI handles the boilerplate, senior engineers handle the craft. From idea to live product in 3–7 days for MVPs.
Schema & Data Modeling
We start with your data: entity relationships, access patterns, and row-level security policies in PostgreSQL via Supabase. A solid schema is cheaper to get right at the start than to migrate later.
API & Server Logic
Business rules live in typed TypeScript server actions and Supabase Edge Functions — not scattered across frontend components. We write the logic once and expose it cleanly to any surface.
React UI & Component System
Next.js 15 server components handle data fetching; React 19 client components handle interactivity. Tailwind CSS keeps the design system consistent without a separate design-token sync step.
CI/CD & Production Hardening
Vercel preview deployments on every PR, environment variable management, Sentry error tracking, and database migration scripts checked into source control — so production is never a surprise.
What You Get
Every full stack web app development engagement includes these deliverables — scoped before we start, delivered before we invoice.
- PostgreSQL schema with migrations and seed scripts
- Supabase auth (email, OAuth, magic link) with RLS policies
- Next.js 15 app router with server and client components
- REST or tRPC API layer with full TypeScript types
- Stripe billing integration (subscriptions or one-time payments)
- Role-based access control across all data layers
- Vercel production deployment with preview environments
- CI pipeline with type-check, lint, and test gates
- Admin dashboard for internal data management
- Handover documentation and architecture decision records
Tech Stack We Use
Our full stack runs on Next.js 15 (app router, server actions), React 19, TypeScript strict mode, Supabase (PostgreSQL + Auth + Storage + Edge Functions), Stripe for payments, Tailwind CSS with shadcn/ui components, and Vercel for hosting. Every dependency is chosen for long-term maintainability — no bespoke frameworks that only one developer understands.
Case Study
PLGOS — Full Stack Product-Led Growth OS
PLGOS needed a multi-tenant SaaS platform where each customer workspace had its own data isolation, user roles, and usage analytics. The challenge: a previous agency had delivered a fragmented codebase where the frontend team and backend team had made incompatible assumptions. Greta rebuilt the entire stack from scratch — schema, API, UI, and deployment pipeline — in a single coherent codebase. Because one team owned every layer, we caught and fixed integration issues before they became bugs in production.
Read full case studyPricing Transparency
Full stack web app development starts at $5,000 for an MVP (core data model, auth, 3-5 key screens, deployed to production). A full product build with admin tooling, billing, and multi-tenant support runs $15,000. Fixed-price scoping means no hourly billing surprises — we agree on scope before a single line of code is written.
MVP
From $5,000
3–7 business days
Full Build
From $15,000
2–4 weeks
All projects include full code ownership, two revision rounds, Vercel deployment, and one week of post-launch support. No hidden fees.
Frequently Asked Questions
What does 'full stack' actually include in your projects?
We own everything from the PostgreSQL schema in Supabase through server-side business logic, REST or tRPC API routes, React UI components, Tailwind styling, and the Vercel deployment pipeline. You get one team, one repo, one point of accountability.
How do you handle database migrations as the product evolves?
Every schema change is a numbered migration file committed to source control. We use Supabase CLI migrations locally and in CI so the database state is always reproducible and rollbacks are safe.
Can you take over a codebase someone else started?
Yes. We audit the existing schema, API contracts, and component structure first, then produce a remediation plan. We've inherited fragmented multi-team codebases before and unified them without a full rewrite in most cases.
Do you work with monorepos or separate frontend/backend repos?
We default to a Next.js monorepo (one repo, one deploy) because it eliminates version drift between frontend and backend. If your team already has a separate repo structure we'll work within it.
What happens to the code when the project ends?
You own 100% of the code. We transfer the repo to your GitHub org, hand over all environment variables and secrets, and provide a written handover document. No vendor lock-in.
How fast can you ship a full stack MVP?
For a well-scoped MVP — auth, core data model, 3-5 key screens, Stripe checkout — we typically deliver in 3-7 business days. Complex multi-tenant platforms take 2-4 weeks for a full build.
Do you provide post-launch support?
Yes. We offer retainer support packages for bug fixes, feature additions, and infrastructure monitoring after launch. Ask about rates when you contact us.
Ready to ship?
Ready to Build Full Stack — Without the Coordination Chaos?
Start Your ProjectOr reach us directly at hello@greta.agency
Written by the Greta Agency team · Last updated April 2025