About · The short version

I like building the whole thing.

From the first sketch to the release notes, I’m happiest turning a useful idea into software that feels inevitable.

Jesus Sanz
Jesus Sanz · Spain

Background · 01

I’m a lead software engineer with an unusually broad path through software: games programming, systems administration, DevOps, frontend engineering, and native Apple development.

That range shaped how I think. I care about the interface, but also what happens underneath it. I care about fast iteration, but not at the expense of maintainability. And I’m drawn to products that give people more control—not another account to manage.

Outside my day job, I build and ship independent apps through Quackbyte. QuackNotes, Clink Clink, and Punchboard all started the same way: a real problem, a small opinion, and the conviction that a calmer tool could exist.

The route here · 02

Learning by making.

  1. 2019

    Games Programming

    BSc at SAE Institute in London—a foundation in real-time systems, C++, and solving hard problems.

  2. 2023

    Native Apple development

    Completed a Swift developer program in Madrid, deepening my work with Swift and SwiftUI.

  3. 2024

    Modern frontend engineering

    Expanded into React, Angular, Vue, and product-focused web development through Lemoncode.

  4. Now

    Leading & shipping

    Leading software work professionally while designing and releasing independent products.

Toolkit · 03

Across the stack.

  • 01TypeScript & JavaScript
  • 02React & modern web
  • 03Swift & SwiftUI
  • 04Node.js & desktop apps
  • 05Bash, PowerShell & DevOps
  • 06Product design & systems thinking

Want to compare notes?

Say hello.

jesus@jsanz.dev ↗