Zouhair Mahieddine
Staff IOS Engineer at Medium
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolZouhair Mahieddine is a Staff iOS Engineer with 13 years of experience building mobile products across video streaming, payments, healthcare, gaming and education, currently improving the Medium iOS experience from performance to CI/CD. Trained as a software engineer at UTC, he began as a freelance iOS specialist in 2009 and has since combined hands-on engineering with product leadership roles at Zalando, Dailymotion, GoCardless and Deezer. He has shipped platform-scale initiatives—reworking dark mode, iPad UX, authentication flows and subscription payments—and led teams to make codebases easier to evolve while reducing operational friction. An active contributor to the Swift ecosystem, he strengthened testing and JSON int64 handling in the widely used apple/swift-protobuf project, improving robustness and performance. Comfortable across Swift, SwiftUI, GraphQL and legacy Objective‑C, he pairs deep technical craft with product-minded problem solving and a proven record of fixing high-impact customer issues.
13 years of coding experience
11 years of employment as a software developer
Masters Degree in Engineering, Computer Software Engineering, Masters Degree in Engineering, Computer Software Engineering at Université de Technologie de Compiègne (UTC)
French, English, Spanish
Github Skills (16)
unit-testing10
json10
swift10
json-encode10
json-encoder10
protobuffer10
jsondecoder10
protobuf10
encoding10
decoding10
test-automation10
testing9
algorithms8
data-structures8
algorithm8
Programming languages (6)
Github contributions (5)
apple/swift-protobuf
Feb 2022 - Jul 2022
Plugin and runtime library for using protobuf with Swift
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:8 reviews, 11 commits, 3 PRs in 5 months
Contributions summary:Zouhair's primary contributions revolve around enhancing the testing framework and improving the reliability of the SwiftProtobuf library. They added comprehensive unit tests to validate JSON encoding options, including tests for int64 and uint64 values, ensuring correct behavior with the alwaysPrintInt64sAsNumbers option. They also addressed code differentiation issues and optimized the code using loops, which led to performance improvements. Additionally, they implemented the necessary functionalities and tests for different encoding and decoding scenarios of int64 values in JSON, thus improving the robustness of the library.
protobufswift
Zedenem/XMonsters
Mar 2015 - May 2022
iOS app: Checklist of Final Fantasy X Monsters
Contributions:26 commits, 6 PRs, 22 pushes in 7 years 2 months
ios
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