Ivo IturrietaPRAGUE --:--:--·-- FPS·-- DRAW CALLS

Lead Software Engineer at Unlayer. I build product systems that stay fast when millions of people use them.

Ten years building software that has to hold up under load: live scores for 10M people a day, AI data tooling in 40+ languages, and the email editor inside Fortune 500 stacks.

Everything on this page is drawn by one live particle system, reshaped into each system I’ve built.

Unlayer ↗YC W22 · 2022 — now

Lead Software Engineer
Fortune 500teams build email with it
  • Drag-and-drop email and page builder, embedded as an SDK inside other SaaS products.
  • AI-powered features built directly into the editor.
  • Responsive templates that render consistently across email clients.
LiveScore ↗Prague · 2021 — 2022

Tech Lead
10M+daily users
  • Led frontend architecture for live sports data at global scale.
  • Led the migration to Next.js: 40% faster page loads, 60% better SEO metrics.
  • Set code-quality standards and mentored a team of eight engineers.
— LIVE
Defined.ai ↗Porto · 2019 — 2021

Senior Software Engineer
40+languages annotated
  • Annotation tooling for text, audio and image data used to train AI models.
  • Interfaces that lifted annotator productivity by 35%.
  • APIs serving 1M+ requests a day, with automated quality checks.
LABELING

Mobile Engineer
15kinternational students
  • Offline-first iOS and Android apps for course materials and campus life.
  • Course content stays available with no connection at all.
  • Built with React Native, Ionic and Firebase.
OFFLINE
BitPulse ↗iOS · Independent · 2026

Designed and built solo · SwiftUI, WidgetKit
3price feeds with automatic failover
  • Live price, charts from 24 hours to 5 years, network stats and Fear & Greed.
  • Price data falls back from Binance to Coinbase to Kraken, so it keeps working where an exchange is blocked.
  • Five free widgets, price alerts and a one-tap privacy mode.
FEED
The Long Century ↗iOS · Independent · 2026

Designed, written and built solo · SwiftUI
17real decisions, from the 1929 crash to Bitcoin
  • A money game built on real history: make one call with your family’s savings, then see what really happened.
  • Every outcome is what that choice actually returned, with dividends and interest, after inflation. No random numbers.
  • Crisis runs through Tokyo 1989, the dot-com crash and 2021’s meme mania.
PERFECT RUN
Daily FormComing sooniOS & watchOS · Independent

Designed and built solo · SwiftUI, HealthKit
On-deviceno account, no servers, no tracking
  • Sleep, Recovery and Strain from Apple Watch data, each scored 0–100 with the reasons in plain words.
  • Scores measured against your own 28-day baselines. Missing data is never filled in with guesses.
  • iPhone, Apple Watch, widgets and Siri, with everything computed on the phone.
SLEEP

Earlier

StackTypeScript, React, Next.js, Node.js, Go, C# / .NET, Ruby on Rails, PostgreSQL, React Native, Swift, AWS

ivoisalinas@gmail.com
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