Hi, I'm Frank Gumeta.

Senior iOS Engineer and Mobile Architect building stable, scalable apps with Swift, SwiftUI, performance-focused architecture, and practical AI workflows.

15+ years helping product teams ship mobile experiences that stay fast, reliable, and maintainable as they grow.

Selected work

Featured Experience

Core Mobile Engineer

Led SwiftUI migration across all teams, maintained crash rate below 0.3%, and designed coding guidelines. Conducted research on new Apple technologies and architectural activities.

Crash rate < 0.3%

Sr iOS Developer

Developed new features using SwiftUI and supported build automation with Bitrise. Built scalable solutions for enterprise-level automotive applications.

Enterprise Scale

Senior iOS Developer

Developed new features, performed code refactoring, and conducted performance analysis with Instruments. Established coding guidelines and delivered iOS training to development teams.

Performance Expert

Mobile Architect

Implemented software development best practices, created functional prototypes, and delivered coaching on iOS development. Established architectural standards for enterprise applications.

Leadership

Selected Builds

Featured Projects

Product-minded builds across web and iOS, focused on polished experiences, reliable architecture, and practical implementation.

iOS Design System

DaVinci Design System

Open Source

DaVinci is a modular Swift Package for iOS 17+, built entirely with SwiftUI and Swift 6 strict concurrency. The v1.4.0 LTS release packages design tokens, 15+ reusable components, an interactive gallery, accessibility contracts, and production-ready conventions into one cohesive system.

Language

Swift 6.3

Interface

SwiftUI

Target

iOS 17+

View on GitHub

Prediction Pool

And The Oscar Goes To

Live App

Oscar predictions pool web app built with Next.js, React, and Appwrite. Create private pools, submit category predictions, and compete on live scoreboards with multi-year Academy Awards data.

App shell

Next.js

Interface

React

Backend

Appwrite

Visit App

DaVinci Deep Dive

A closer look at the v1.4.0 design-system foundation: tokens, 15+ components, type safety, validated SF Symbol APIs, accessibility contracts, image loading, and theme primitives shaped for modern iOS teams.

Complete Token System

Semantic colors, typography, spacing, radius, elevation, motion, opacity, control heights, and stroke in one value-driven layer.

Reusable Components

Production-ready SwiftUI components: buttons, text, cards, fields, switches, segmented controls, progress bars, badges, remote images, and skeletons.

Type-Safe & Modern

Swift 6 strict concurrency with Sendable types, validated SF Symbol APIs, native SwiftUI environment theming, and a versioned public API baseline.

Dark Mode Native

Optimized palettes for light and dark themes with semantic colors, accessible contrast, bilingual accessibility strings, and an interactive gallery for visual verification.

Quick Start Example

import SwiftUI
import DaVinciTokens
import DaVinciComponents

struct ContentView: View {
    var body: some View {
        VStack(spacing: 16) {
            DSText("Welcome to DaVinci", role: .title)
            DSText("A modern design system", role: .body)

            DSButton("Get Started", appearance: .primary) {
                print("Button tapped!")
            }
        }
        .padding()
        .dsTheme(.defaultTheme)
    }
}

View on GitHub Installation Guide

Published Thinking

Technical Articles

Practical writing on iOS engineering habits: Git hygiene, memory management, debugging, and performance work.

Version Control

Merge vs Rebase

A practical guide to choosing the right Git workflow when updating, integrating, and keeping team branches clean.

Git / Team Workflow

iOS Performance

Memory Leaks - Part 1/2

What memory leaks are, how they happen in mobile apps, and why they matter for reliability.

Debugging

Memory Leaks - Part 2/2

A follow-up on finding, debugging, and removing memory leaks with practical tools and techniques.

Published on Rappi Engineering Blog