Carlos Cardona

Senior iOS Engineer · Founder, Anthana Agency

iOS engineer with 6+ years building and shipping native apps in Swift. I've worked on consumer apps at Citibanamex and the Disney Cruise Line app, where I maintained the production app's stability and led a 6-person team as tech lead on a new feature. At Anthana, my agency, iOS app development is the core of my client work.

Selected Work
Driftwood app icon

Driftwood

Anonymous voice app
In TestFlight

A deliberately anti-social app. You record a voice note of up to 60 seconds and drop it into the ocean, with no audience or followers. It pairs you with one stranger by the emotional tone of your voice rather than the words, and their note drifts back to you. You can't reply or know who they are, you just keep it or let it go.

Swift · SwiftUI · MVVM · Supabase (Postgres + pgvector) · Deno Edge Functions · NLEmbedding · Sign in with Apple · APNs · Row-Level Security
Nayori app icon

Nayori

Anime tracker
Designed for iOS 26

A native iOS app for tracking anime, built for iOS 26 and synced with AniList. Organize your library by Watching, Planning, and Completed, log progress per episode, and get AI-generated recaps that catch you up to where you are without spoilers. Detailed show pages cover studio, next episode, characters, and related entries, plus year-in-review stats on everything you've watched.

Swift · SwiftUI · iOS 26 · AniList API · LLM recaps
ACNH Guide app icon

ACNH Guide

Island companion
Animal Crossing: New Horizons

A companion app for Animal Crossing: New Horizons. It tracks Critterpedia and museum progress across fish, bugs, sea creatures, fossils, and art, and shows which critters are available right now based on your hemisphere and the time of day. A turnip tracker logs morning and afternoon prices and predicts the week's pattern to time your sales, alongside a daily task checklist and an events calendar with villager birthdays and local notifications. The UI takes after the in-game NookPhone, with dark mode throughout. Data comes from the Nookipedia API.

Swift · SwiftUI · Swift Charts · Nookipedia API · Local Notifications
Aona app icon

Aona

Daily focus & goals
Habits & productivity

A minimalist daily-focus app built around the idea of getting 1% better each day. You set a single objective for the day and Aona keeps it in front of you through home and lock screen widgets, with a catalog of customizable themes spanning colors, gradients, and nature photography. Streaks track consecutive days with milestones to keep momentum, and well-timed notifications nudge you to set your goal each morning.

Swift · SwiftUI · WidgetKit · Home & Lock Screen widgets · Local Notifications
Loomi app icon

Loomi

AI WhatsApp CRM
Sales automation

A CRM for businesses that sell over WhatsApp. An AI agent answers incoming chats around the clock in each customer's own language, scores leads, and sorts them into a sales pipeline by stage. When a conversation needs a person, it hands off to the team with the full thread for context. Everything runs through one inbox with real-time stats, so nothing gets lost between messages.

Swift · SwiftUI · MVVM · Combine · async/await · Supabase Auth · REST API (Railway) · URLSession · Codable · WhatsApp Business API · AI Agent
Experience
2025 to now

Founder & CEO

Anthana Agency

One-person studio. I take client projects from scope to production: I define requirements directly with the client, then handle architecture, implementation, testing, and release. Engagements range from single-feature work to full apps.

  • Native iOS in Swift and SwiftUI (UIKit where needed)
  • Web apps and internal tools
  • AI agents and automations to replace manual workflows
  • App Store submission, releases, and post-launch maintenance

I'm the only engineer on most projects, so I own the technical decisions end to end and stay the single point of contact through delivery.

2023 to 2025

Senior iOS Developer & Tech Lead

The Walt Disney Company · Disney Cruise Line, Features Team

Tech lead for a six-person team (iOS, Android, Flutter) building a new feature in the Disney Cruise Line app. The feature had to behave identically on all three platforms, so part of the work was defining the shared behavior up front and keeping the implementations from drifting apart. I owned the iOS build and the team's process.

  • Ran sprint planning and backlog refinement
  • Wrote the iOS implementation in Swift
  • Reviewed pull requests and set code review standards
  • Coordinated with Design and QA throughout the cycle
  • Shipped the feature to production across all three platforms
2022 to 2023

iOS Developer (Semi-Senior)

The Walt Disney Company · Disney Cruise Line, Sustainment Team

Maintenance and stability work on the production Disney Cruise Line iOS app. Day to day this meant triaging incoming crashes and bug reports, reproducing them, and fixing the root cause rather than the symptom.

  • Monitored crash reporting and real-time app health
  • Reproduced and fixed guest-impacting bugs
  • Profiled and addressed performance issues
  • Shipped targeted fixes and hotfixes for live builds

Releases were constrained: the app runs on ships with limited connectivity and there's no fast rollback once a build is out, so fixes had to be verified carefully before shipping.

2020 to 2022

Junior iOS Developer

Citibanamex · Mobile Banking App

Feature development on the Citibanamex mobile banking app in an Agile team. First professional iOS role. Alongside feature work, I spent time raising the project's test coverage, which was low when I joined.

  • Built sprint features in UIKit
  • Added unit tests to increase coverage and catch regressions
  • Reviewed pull requests from the iOS team
  • Worked daily with Android, Design, and the Product Owner
Skills
languages
Swift, Objective-C (interop)
ui
SwiftUI, UIKit, Auto Layout, Storyboards, programmatic UI, Core Animation
architecture
MVVM, Clean Architecture, Coordinator pattern, dependency injection, protocol-oriented design
concurrency
async / await, Swift Concurrency, Combine, GCD, actors
data & networking
Core Data, SwiftData, Realm, URLSession, Codable, REST APIs, Keychain, UserDefaults
apple frameworks
CoreML, MapKit, AVFoundation, StoreKit, Push Notifications (APNs), WidgetKit, Foundation
testing
XCTest, unit & UI tests, TDD, code review, memory management (ARC)
tooling
Xcode, Instruments, SPM, CocoaPods, Carthage, Git, Fastlane, CI/CD, Jira, Figma
distribution
App Store Connect, TestFlight, code signing, provisioning profiles
ai / llms
Claude (Anthropic API), OpenAI / GPT, prompt engineering, tool & function calling, structured outputs
ai engineering
AI agents, RAG, embeddings, vector databases (Pinecone, pgvector), evals, context management
ai tooling
Claude Agent SDK, Model Context Protocol (MCP), LangChain, n8n, Zapier, Python, TypeScript
web & automation
Web apps, REST & webhook integrations, workflow automation
leadership
Tech lead (team of 6), sprint planning, mentoring, client management