RICARDO GUILLEN

Ricardo
Guillen.

iOS Application Architect. I design the structural systems beneath the apps people actually keep on their home screen — building for clarity, longevity, and the quiet feel of software that just works.

Based
El Salvador / remote
Practice
Swift · SwiftUI · Modular Architecture
Platforms
iOS · iPadOS · tvOS · watchOS
01Craft

The disciplines that hold an iOS application together.

01

Platforms

iOSiPadOStvOSwatchOS
02

Languages

SwiftObjective-C
03

Architecture

MVVMVIPERCLEANSOLID
04

Reactive

Combineasync/await
05

UI

SwiftUIUIKit
06

Persistence

Core DataRealm
07

Release Engineering

FastlaneJenkinsBitriseAzure Pipelines
08

Modular Projects

Tuist
09

Tools

XcodeSwift Package ManagerInstruments
02Philosophy
I design for the engineer who inherits this codebase — someone joining a year from now who needs to understand, extend, and trust what’s already there. Scalability and clarity aren’t trade-offs; they’re the same decision made well.
03Selected Work

A few projects I’m proud of.

Large-scale US TV Network iPhone, iPad and Apple TV apps built within a specialized team of ~200 engineers. Modular multi-platform codebase serving millions of viewers.
iOS · iPadOS · tvOS
VIA APPLAUDO
Highlight Moments Personal life event timeline for iPhone. Fully local — no accounts, no cloud, no tracking. Built solo from architecture to App Store.
iOS
More coming soon
04Open Source

Work I’ve shipped in the open.

2026
LiquidGlass SwiftUI modifier bringing Apple’s iOS 26 Liquid Glass material to any view.
SwiftUI · iOS 26
05Shipped

One shipped. One in the works.

Highlight

A beautiful timeline for birthdays, appointments, and every moment worth remembering. Fully local — no accounts, no cloud, no tracking.

Download on the App Store
Highlight app timeline screen showing upcoming events

Agenda

A school communication suite — parent iOS app, teacher web app, and Rails backend — connecting families and classrooms.

Coming mid-2026
App Screenshot