Cristian Gatu

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Hi, I'm

Cristian Gatu

front-end developer

Senior Full-Stack Engineer with 7+ years of experience designing and scaling API-driven systems across fintech, supply chain, and digital publishing. Deep expertise in React, Next.js, Node.js, GraphQL, and PostgreSQL, with a strong focus on system architecture, performance, and cloud infrastructure (AWS). Comfortable driving technical decisions, partnering with architects on system design, and mentoring junior engineers.

About

A bit about me

I'm a Senior Full-Stack Engineer based in Iași, Romania, with 7+ years of experience building and scaling API-driven systems for fintech, supply chain, and digital publishing companies. My day-to-day centers on React, Next.js, Node.js, GraphQL, and PostgreSQL, but I care just as much about the system around the code — architecture, performance, and the cloud infrastructure it runs on.

I've led legacy rewrites, built products from scratch, and spent a lot of time in the unglamorous but critical work of keeping distributed systems reliable. I like partnering closely with architects on system design, and I enjoy mentoring junior engineers — a good code review is one of the best ways I know to level up a team.

Outside of client work, I keep a couple of side projects running, including this site, and I'm always looking for the next interesting problem to dig into.

Core skills

ReactNext.jsTypeScriptNode.jsGraphQLPostgreSQLAWS

Selected work

Projects

A few things I've built or maintained along the way.

Internal tool — Catena Electric Iași
Internal tool — Catena Electric Iași
2022 – present (occasional maintenance)

Freelance internal tool for drafting and editing contracts and amendments, with an integrated client database.

Next.jsMongoDB
Seed2Shelf
Seed2Shelf
December 2021 – July 2022

A SaaS platform helping production labs manage inventory, transport, and workflow, including integration with Metrc. Owned the front-end and API architecture.

TypeScriptNode.jsReactNext.jsNestJSMariaDB
Powercode
Powercode
February 2019 – April 2020

An application helping telecom providers (TV, Internet, Telephone) manage clients and services — invoice generation, notifications, and permission management.

JavaScriptTypeScriptNode.jsReactGraphQLMySQL
Personal Portfolio

This site — built with Next.js, shadcn/ui, and a bilingual, themeable design system.

Next.jsTypeScriptTailwind CSS

Get in touch

Contact

Have a project in mind or just want to say hi? Send me a message.