You will get your database migrated to PostgreSQL without data loss or downtime
Project details
Document databases are quick to start with and painful once your data has real relationships in it. The same customer name lives in four places and three of them are stale. An order references a product that was deleted last month. Nothing stops it, because nothing is enforcing anything.
Moving to PostgreSQL is not just copying records across. The schema has to be redesigned so integrity is enforced by the database rather than hoped for in application code, and the application has to be updated to match, without losing a single row on the way.
I have done this on a live product: 33 models and 150+ endpoints migrated from MongoDB to PostgreSQL, restructured so foreign keys, constraints, and checks do the work the application was previously trusted to do. I also work with MySQL, SQLite, and Firebase as sources.
You get the target schema, a migration script that can be run and re-run safely, your application code updated, and verification that every row landed where it should. On the Advanced tier, a dual-write cutover so your users never see downtime, plus a rollback plan if anything looks wrong.
Moving to PostgreSQL is not just copying records across. The schema has to be redesigned so integrity is enforced by the database rather than hoped for in application code, and the application has to be updated to match, without losing a single row on the way.
I have done this on a live product: 33 models and 150+ endpoints migrated from MongoDB to PostgreSQL, restructured so foreign keys, constraints, and checks do the work the application was previously trusted to do. I also work with MySQL, SQLite, and Firebase as sources.
You get the target schema, a migration script that can be run and re-run safely, your application code updated, and verification that every row landed where it should. On the Advanced tier, a dual-write cutover so your users never see downtime, plus a rollback plan if anything looks wrong.
Database Type
MySQL, MS SQL, SQLite, PostgreSQL, MongoDBWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,500
|
Advanced
$3,500
|
|---|---|---|---|
| Delivery Time | 5 days | 14 days | 25 days |
Number of Revisions | 2 | 3 | 4 |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$150
Query performance tuning
(+ 3 Days)
+$300
Ongoing sync during transition
(+ 5 Days)
+$500Frequently asked questions
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MS
Mbongayah S.
Apr 18, 2023
In need of a Web developer
Enow Divine is a skilled and wonderful person with great personality and work ethics. He did his job excellently well and on time, and even notifies me early enough if he thinks a task may take a longer time period and also provide me with details why it will take longer than expected. I think his a great person to work with and would hire him again if I need his services.
About Enow Divine
Senior Full-Stack Engineer | Node.js, TypeScript, React | Payments
Douala, Cameroon - 5:45 am local time
Payments are where small bugs get expensive. A duplicated webhook. A race condition on a balance. A field rename that silently changes the meaning of a transaction.
I've spent 7+ years building systems designed to prevent those problems: idempotent payment flows, immutable audit trails, and state machines that keep transactions consistent under load.
What I do
* Payment integrations: card processors, mobile money, and multi-currency remittance corridors
* Node.js / TypeScript backends using REST and event-driven architectures, with PostgreSQL and Prisma
* Microservice architecture. I currently own the backend across 15+ services for a US-based multi-tenant SaaS platform
* Full-stack delivery when needed with Next.js, React, and React Native
Things I've built and shipped publicly
* stateledger: a TypeScript state machine library for payment workflows, published on npm and GitHub
* PulseLab: a webhook and WebSocket debugger for developers
* SS Invoice: mobile money invoicing for small businesses
The code is part of the portfolio. You can look through it before you hire me.
Recent client work
* Multi-corridor remittance platform covering Bahrain, the UK, Ukraine, and Canada to Cameroon, with live FX rates, admin approval flows, and proof-of-payment handling
* Event ticketing platform with payment splits and payouts
* Education pathways platform for a licensed Cameroonian company
* Additional client work under confidentiality. I'm happy to walk through the architecture on a call.
Stack
Node.js · TypeScript · NestJS · Express · PostgreSQL · Prisma · Next.js · React · React Native · Redis · Docker · AWS
I work remotely with US and EU teams and usually respond within a few hours.
I'm also comfortable saying when a scope is unrealistic. I'd rather catch that before development starts than discover it three weeks into the project.
If you're building something where money changes hands, send me the details. I'll tell you honestly whether I'm the right fit.
Steps for completing your project
After purchasing the project, send requirements so Enow Divine can start the project.
Delivery time starts when Enow Divine receives requirements from you.
Enow Divine works on your project following the steps below.
Revisions may occur after the delivery date.
Map the current data
I go through your existing collections, the relationships that are implied but not enforced, and the places where the shape of the data varies between records. Surprises live here, so this comes first.
Design the target schema
I design the PostgreSQL schema with proper types, foreign keys, and constraints, then walk you through it before writing any migration code.