Esteban Chirinos

Engineer · Builder · Maker

Technical Services Engineer at Coinbase, helping developers build onchain. On nights and weekends, I build my own products — one got acquired. Previously at Google, Microsoft, OpenSea, and JPMorgan.

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Companies Shipped At

2K+

Monthly Users

10+

Products Built

Side Project Acquired

What I've Built

Side projects and products I've built on nights and weekends.

True Rank Pickleball

ACQUIRED

A rating system providing accurate, category-specific ratings for Men's, Women's, and Mixed pickleball play. Built from zero to acquisition.

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Creator Tip App

Decentralized tipping with crypto payments on Base network

Coinbase Onramp Demo

Demo app serving 2,000+ users/month for fiat-to-crypto conversion

QuikBuild Innovations

Automation and software solutions for construction companies

Klear Sky Roofing

My roofing company - tech meets the trades

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Where I've Worked

From Wall Street to Web3, shipping at every scale.

Coinbase

Technical Services Engineer · Current

Empowering developers building on the Coinbase Developer Platform. Providing architectural guidance, troubleshooting complex integrations, and creating technical documentation and sample code to help teams build the future onchain.

TRM Labs

Blockchain Intelligence

Polygon

Ethereum Scaling

OpenSea

NFT Marketplace

Google

Technology & Cloud

Microsoft

Software & Computing

JPMorgan Chase

Financial Services

Full work history →

Tech Stack

The tools I reach for every day.

Languages

TypeScriptPythonJavaScriptC#JavaSQL

Frameworks & Tools

ReactNext.jsNode.jsSpring BootDockerGit

Platforms

AWSGCPVercelCoinbase CDPPostgreSQLAzure

Let's Talk

Building something interesting? I'm always open to hearing about new projects and opportunities.

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