Michael Arrington
Overview
9
9
years of professional experience
Skills
- Languages: Swift, C#, Java, JavaScript, TypeScript
- UI: SwiftUI, UIKit, React
- Architecture: MVVM, MVC, TCA
- APIs: REST, GraphQL
- Data: SwiftData, SQLite, CoreData
- Quality: Deterministic unit testing, CI/CD
- Dependency Inversion
- Concurrency: Swift Concurrency, Combine, GCD
- Scrum/Agile
- Git version control
Summary
Strategic Lead iOS Engineer with expertise in building scalable Swift architectures and modernizing legacy platforms. Skilled in managing cross-functional teams, implementing deterministic unit testing, and designing maintainable systems. Experienced in executing large-scale technical migrations and enhancing code quality.
Accomplishments
- Reduced build times from 9 minutes to under 1 minute on 1.3m+ lines of code
- Trained teams on latest frameworks (Combine, SwiftUI, Concurrency) and iOS best practices, increasing team velocity and code quality
- Mentored 7 junior and mid-level developers in professional development, improving code quality, delivery velocity, and technical independence
- Built multiple generic template UI libraries for reusable, consistent design on multiple projects
- Led modernization efforts converting Objective-C applications to Swift and SwiftUI across 3 applications, reducing maintenance costs and accelerating feature delivery
Work History
IOS LEAD DEVELOPER
TEKsystems
Remote
03.2022 - 06.2026
- End clients: Comcast/Xfinity, AAA Auto Club, T. Rowe Price
- Delivered architecture modernization and provided technical leadership for enterprise iOS engagements, enhancing system performance and maintainability
- Established unit testing practices across multiple teams, resulting in 100% coverage for critical business-logic layers
- Defined architecture standards that facilitated consistency and interoperability across multiple teams
IOS APP DEVELOPER
Elementum
Lehi, UT
08.2021 - 02.2022
- Developed data analysis front end with GraphQL backend, enhancing data visualization capabilities
- Created SwiftUI component library utilizing dynamic data from GraphQL backend, aligning UI elements with designs for 20+ data types
- Engineered data manipulation technique for backend-driven generic frontend, decreasing logic duplication across front ends
IOS DEVELOPER 2
Xactware Solutions
Lehi, UT
05.2019 - 08.2021
- Spearheaded team to convert large B2B app from Xamarin Native to Swift to improve long-term maintainability
- Refactored deeply nested class hierarchies into reusable components, enhancing code clarity and reusability
- Refactored legacy architecture, eliminating recurring defects and enabling development of previously blocked features
- Led team in converting large B2B app from Xamarin Native to Swift, ensuring improved long-term maintainability
ENTRY-LEVEL MOBILE DEVELOPER
Clever Coding
Lehi, UT
11.2017 - 03.2019
- Self-taught iOS developer, applied skills on the job
- Updated and maintained small apps in Swift and Objective-C, ensuring functionality and user experience
- Learned, then trained more experienced coworkers on AutoLayout in UIKit
- Developed new applications from the ground up
- Updated and maintained small Android applications, enhancing performance and user satisfaction
Education
High school graduate -
Computer Science
Timeline
IOS LEAD DEVELOPER
TEKsystems
03.2022 - 06.2026
IOS APP DEVELOPER
Elementum
08.2021 - 02.2022
IOS DEVELOPER 2
Xactware Solutions
05.2019 - 08.2021
ENTRY-LEVEL MOBILE DEVELOPER
Clever Coding
11.2017 - 03.2019
High school graduate -
Computer Science