John Warmann
Lead Mobile Engineer at Chedda Technologies
Old Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolJohn Warmann is a Lead Mobile Engineer and architect based in Toronto with 15+ years building native iOS experiences and leading multi-platform teams that have shipped apps to millions of users. He specializes in Swift, UIKit, SwiftUI and tvOS, and has driven end-to-end solutions from live streaming (NBC Sports, NESN) to high-scale consumer products (Ashley Madison) and mission-critical telehealth platforms with real-time VoIP, payments, and geolocation. Equally comfortable in mobile and backend design, he shapes API contracts, service boundaries, and authentication for sensitive data, applying a systems mindset that informs his work on AI agents and DeFi automation. He’s led cross-platform teams across iOS, Android, React Native and Roku, instituted testable MVVM architectures, CI/CD, and rigorous code review culture, and has hands-on experience with security-critical financial and blockchain systems. Open to Staff/Principal iOS or Mobile Architect roles, he combines product-focused delivery with deep technical stewardship and a knack for turning complex domain requirements into practical, testable architectures.
10 years of coding experience
11 years of employment as a software developer
Computer Science, Computer Science at University of Toronto
Spanish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (126)
javascript10
bull10
swift10
job-queue10
queue10
angular10
debugging10
typescript10
macos10
nodejs10
materialize10
ios10
infura9
solidity9
scheduler9
Programming languages (8)
Github contributions (5)
chedda-tech/chedda-protocol
Nov 2023 - Mar 2025
Contributions:115 pushes, 2 branches in 1 year 4 months
UXDProtocol/uxd-evm-client
Jun 2022 - Dec 2022
UXD EVM client library
Contributions:1 release, 28 reviews, 8 PRs in 6 months
ethereumclient-libraryblockchainevmsolidity
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