John is available for hire

John Coates

Verified Expert in Engineering

Reverse Engineering Developer

Location

Austin, TX, United States

Toptal Member Since

January 11, 2018

John has over ten years of experience developing for Apple platforms. He strives to communicate well and effectively, has worked in teams of varying sizes from large-scale one-person projects to projects with up to a dozen developers. John has many open source contributions, including creating one of the most popular Swift projects on GitHub.

Xcode Objective-C iOS Swift Git MySQL TypeScript Core Data Agile Vapor Firebase MacOS Reverse Engineering IDA Pro

Portfolio

Flex

ARM Assembler, Objective-C, Swift, Interactive Disassembler (IDA) Pro...

Struncon

Interactive Disassembler (IDA), Objective-C

USeek

TypeScript, Vapor, Objective-C, Swift

Experience

Objective-C - 11 years Reverse Engineering - 9 years iOS - 9 years Core Data - 5 years Interactive Disassembler (IDA) Pro - 5 years Swift - 3 years Metal - 3 years Vapor - 1 year

Availability

Part-time

Preferred Environment

Sketch, Git, Xcode, MacOS

The most amazing...

...app I've made is one that brought reverse engineering to the masses, and let people create and share projects with no coding experience, all through a UI.

Work Experience

Developer

2013 - PRESENT

Flex

Created a dynamic Objective-C hooking platform. Using three distinct assembly architectures, ARM, ARM64, and x86-64.
Constructed an intuitive way for users to create iOS tweaks with no programming experience, completely in the UI.

Technologies: ARM Assembler, Objective-C, Swift, Interactive Disassembler (IDA) Pro, Reverse Engineering

iOS Engineer

2017 - 2019

Struncon

Created an Objective-C-based CLI tool integrated with iOS's internals for high iteration automation of complex tasks.
Contributed to the open-source reverse engineering engine, Frida.
Reverse-engineered the iOS App Store to monitor network requests and ingest data.

Technologies: Interactive Disassembler (IDA), Objective-C

iOS Developer

2017 - 2018

USeek

Created a solution for playing inline video on iOS 9+ that works within WebViews that have this feature explicitly disabled.
Led the development of an SDK framework that was implemented in various popular applications such as T-Mobile's iOS app.
Created a Facebook Messenger bot to showcase integrations with service.
Provided guidance into implementing automated enforcement of code style guidelines.

Technologies: TypeScript, Vapor, Objective-C, Swift

iOS Developer

2017 - 2017

Well Done

Wrote a Firebase abstraction for strict typing and increased intuitiveness of controllers.
Implemented initial designs of application, including realtime chat and notifications.

Technologies: Firebase, Swift

iOS Developer

2017 - 2017

Rapid Healthcare

Built out extendable Vapor backend for integrating with Amazon Alexa commands.
Wrote Swift iOS framework that allows for pairing of an Amazon Echo to a phone for issuing commands that are reflected in an iOS app.

Technologies: Vapor, Swift

Experience

Slate - iOS Camera

https://github.com/JohnCoates/Slate

Fully configurable iOS camera

Skills

Languages

Objective-C, Swift, TypeScript, ARM Assembler

Tools

Xcode, PaintCode, Sketch, Git, Interactive Disassembler (IDA) Pro, Interactive Disassembler (IDA)

Platforms

iOS, Firebase, MacOS

Other

Software Development, Reverse Engineering

Frameworks

Core Data, Vapor, Metal

Paradigms

Agile

Storage

MySQL

Collaboration That Works

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