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Marcus K. iOS, Swift and App Development

My name is Marcus K. and I have over 9 years of experience in the tech industry. I specialize in the following technologies: iOS Development, Swift, SwiftUI, Supabase, Firebase, etc.. I hold a degree in Master of Science (MS), Bachelor of Business Administration (BBA), . Some of the notable projects I’ve worked on include: WTM Event-Based Social Media iOS App, Flash Chat, a simple app for texting without a cellphone plan, FourBrains, a coordination builder for drummers, Walmart Lookup, a robust networking app with redundancy safeguards, Tipsy, a simple tip calculator, etc.. I am based in Los Angeles, United States. I've successfully completed 9 projects while developing at Devaims.

I possess comprehensive technical expertise across the entire solution lifecycle, from user interfaces and information management to system architecture and deployment pipelines. This end-to-end perspective allows me to build solutions that are harmonious and efficient across all functional layers.

I excel at managing technical health and ensuring that every component of the system adheres to the highest standards of performance and security. Working at Devaims, I ensure that integration is seamless and the overall architecture is sound and well-defined.

My commitment is to taking full ownership of project delivery, moving quickly and decisively to resolve issues and deliver high-quality features that meet or exceed the client's commercial objectives.

Main Technologies

  • iOS Development
  • Swift
  • SwiftUI
  • Supabase
  • Firebase
  • Mobile App Development
  • Minimum Viable Product
  • Git
  • App Store
  • Push Notifications
  • REST API
  • User Authentication
  • Database
  • Core Data
  • Prototype

Notable Projects

WTM Event-Based Social Media iOS App

Using SwiftUI and MVVM, I built What’s The Move with a dynamic scrollable feed, real‑time Supabase back-end, live chat, and location‑based event discovery, each screen pixel‑perfectly translated from Figma designs.

Flash Chat, a simple app for texting without a cellphone plan

This project uses the Cloud Firestore database solution from Google. This app allows users to communicate with each other without a cellphone plan. Their texts are saved securely on a database.

FourBrains, a coordination builder for drummers

This project uses the AudioKit engine. It also uses the remote NoSQL database solution Cloud Firestore by Google. I design all the visual aspects and the unique playback features that allow drummers to have a great experience practicing.

Walmart Lookup, a robust networking app with redundancy safeguards

Robust networking with a custom NetworkService (configurable timeout, retry logic, semantic NetworkError cases, and a bundled JSON fallback) MVVM architecture with a CountriesViewModel (@MainActor-safe, debounced search, diffable data snapshots) Modern UI using UITableViewDiffableDataSource, Dynamic Type, pull-to-refresh “deal of the day,” and seamless pre-iOS13 & multi-scene support via AppDelegate/SceneDelegate Clean models (Codable + Hashable) that validate and default malformed JSON to "N/A"

Tipsy, a simple tip calculator

This project is a simple tip calculator that takes the hassle out of splitting checks and calculating tips. It uses multiple views and is easy to use.

Todoey, a minimal to-do list app

This app shows my ability to create unique user interfaces. The to-do items depend on each other to decide what color they should be This app has multiple screens and uses CoreData to save to-do lists in a persistent way.

Poke 3D, Three-dimensional Pokemon cards

This app uses augmented reality along with the camera to identify Pokemon and bring a 3D image of them onto the screen. I used ARKit for this one.

Magic Paper, moving newspaper images

This project uses ARKit, the augmented reality framework from Apple. I used ARKit to transform a picture into a video whenever someone uses their phone's camera to look at the newspaper.

Xylophone, a fun, single-octave musical instrument

This project uses Apple's native audio processing engine to generate sounds according to user gestures. The notes are accurate and it's quite fun to play.

Education

  1. Master of Science (MS), Software Engineering

    California State University, Fullerton

  2. Bachelor of Business Administration (BBA), Entrepreneurship

    Boise State University

  3. iOS Development

    London App Brewery Bootcamp · 2020

Solutions

  • Ecommerce
  • Blockchain
  • AI
  • AR/ VR

Technologies

  • React Native
  • Flutter
  • Python
  • Javascript

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