You will get a full-stack web app built with Next.js, Supabase and TypeScript

Let a pro handle the details

Buy Web Application Programming services from Takeshi, priced and ready to go.

Let a pro handle the details

Buy Web Application Programming services from Takeshi, priced and ready to go.

Project details

Need a production-ready web app that actually ships — not a prototype? I build full-stack applications using Next.js, Supabase, and TypeScript: server-side rendering, responsive UI, Postgres database with RLS, authentication, real-time features, and Vercel deployment. Clean architecture from day one.

I've launched SaaS products, internal tools, and client-facing platforms — delivering typed, well-structured codebases your team can maintain. Every project includes mobile-responsive design, end-to-end auth flow, and a live Vercel deployment. Whether you need a simple CRUD app in 5 days or a multi-tenant SaaS platform with billing and dashboards, you get working software — not boilerplate.
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, W3C Markup Validation Service
What's included
Service Tiers Starter
$149
Standard
$1,499
Advanced
$3,499
Delivery Time 5 days 12 days 21 days
Number of Revisions
135
Design Customization
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Content Upload
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Responsive Design
Source Code

Frequently asked questions

Takeshi R.Status: Offline
Takeshi R.Status: Offline
n8n Automation Developer - Supabase, REST APIs, AI Workflows
Nagoya, Japan - 2:30 am local time
I automate the repetitive stuff so you don't have to. If your team is copy-pasting data between tools, manually sending reports, or waiting on someone to trigger the next step in a process - that's what I fix.

I use n8n because it's self-hostable, affordable, and gives you full control over your data. I connect it to whatever stack you're already on: Supabase, Airtable, Google Sheets, Slack, Gmail, REST APIs - you name it.

My background: I've shipped automation systems for small businesses and startups in Japan, Latin America, and the US. I speak Japanese, Spanish, and English, which helps when the client and the tooling are in different time zones.

What I typically build:
- Webhook-triggered workflows (form submissions, payment events, inbound emails)
- Scheduled data syncs between databases and spreadsheets
- AI-assisted pipelines using Claude or GPT for classification, summarization, or routing
- REST APIs with Node.js + Supabase when the job needs a custom backend
- Mobile apps with Expo + React Native when it needs to go on a phone

If you have a process that runs on copy-paste or manual steps, let's talk.

Steps for completing your project

After purchasing the project, send requirements so Takeshi can start the project.

Delivery time starts when Takeshi receives requirements from you.

Takeshi works on your project following the steps below.

Revisions may occur after the delivery date.

Architecture & setup

I scaffold the Next.js project, configure Supabase auth and database schema, and set up the deployment pipeline before building features.

Review the work, release payment, and leave feedback to Takeshi.