You will get a custom REST or GraphQL API and backend built with Node.js & Supabase
Project details
Need a backend your frontend or mobile team can integrate fast — with zero guesswork? I build production-ready REST and GraphQL APIs using Node.js and Supabase: clean authentication (JWT/OAuth), input validation, structured Postgres schemas, role-based access control, and auto-generated API docs. Every endpoint ships with error handling and test coverage so your team moves confidently from day one.
I've shipped APIs for SaaS products, mobile apps, and internal tools — from simple CRUD endpoints to multi-tenant architectures with real-time subscriptions. You receive fully working, documented, deployable code — not boilerplate — plus a Postman collection your team can use immediately. Whether you need 3 endpoints or a complete backend with auth, database, storage, and deployment, I deliver clean, scalable code you can build on for years.
I've shipped APIs for SaaS products, mobile apps, and internal tools — from simple CRUD endpoints to multi-tenant architectures with real-time subscriptions. You receive fully working, documented, deployable code — not boilerplate — plus a Postman collection your team can use immediately. Whether you need 3 endpoints or a complete backend with auth, database, storage, and deployment, I deliver clean, scalable code you can build on for years.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$149
|
Standard
$1,499
|
Advanced
$3,499
|
|---|---|---|---|
| Delivery Time | 5 days | 12 days | 25 days |
Number of Revisions | 1 | 3 | 5 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
About Takeshi
n8n Automation Developer - Supabase, REST APIs, AI Workflows
Nagoya, Japan - 10:21 am local time
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.
Design, build & deploy your API
I design the data model and endpoints, implement auth, validation and tests, document the API, then deploy it and hand over clean source code.