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Michael Jones

@michaeljones10

I build production iOS payment and booking apps in Swift, improving reliability, performance, and release safety.

I've owned iOS wallet and card workflows for a fintech client at Decagon, building Swift features connected to payment APIs and backend reconciliation services. I replaced callback-heavy payment flows with a Combine-based pipeline, making authorization retries and UI state changes predictable.

Previously at Phorest, I built booking and checkout experiences with Apple Pay, card tokenization, Core Data, structured concurrency, and background sync. I also led mobile on-call, shipped hotfixes through Fastlane, improved startup performance with SwiftUI, and mentored engineers on Combine and concurrency.

Experience

Work history, roles, and key accomplishments

Senior iOS Engineer

Decagon

Mar 2024 - Aug 2026 (2 years 5 months)

Owned the iOS app for wallet and card workflows, built a Combine-based payments pipeline, improved startup time and memory footprint, implemented dependency injection, ran mobile on-call, and mentored two mid-level engineers.

Swift SwiftUI UIKit Combine Dependency Injection MVVM Instruments Fastlane Code Review On Call Concurrency Payment APIs REST JSON

iOS Engineer

Phorest

May 2021 - Mar 2024 (2 years 10 months)

Built booking and payments screens, integrated Apple Pay and card tokenization, rewrote appointment sync with structured concurrency, wrote tests, integrated feature flags, and collaborated with backend engineers.

Swift SwiftUI UIKit Combine Core Data XCTest Feature Flags Dependency Injection REST JSON Concurrency Background Tasks Apple Pay Card tokenization

Mobile Engineer

Phorest

Mar 2020 - May 2021 (1 year 2 months)

Implemented core booking UI and local persistence with Core Data, moved networking to a single source of truth, and fixed memory leaks and threading issues.

Swift UIKit Core Data Networking Concurrency Memory Management

Junior Software Engineer

Everseen

Jul 2017 - Feb 2020 (2 years 7 months)

Built companion mobile features for a retail computer-vision product, integrated WebSocket streams, and added authentication and secure token storage.

Swift WebSockets Keychain Authentication Mobile Development