Profile
- Principal iOS Engineer with 17+ years across mobile and backend
- I work best where product complexity is high, reliability matters, and teams need clear technical direction
- Strong focus on iOS architecture, platform evolution, delivery quality, and helping engineers do their best work
- Recent work includes 99.999% availability during peak trading periods, a 400% increase in scalability, and initiatives supporting an estimated 570k additional trades per year
- Background spans fintech, ecommerce, SaaS, and startups
- Based in Berlin with German work rights, open to Principal iOS Engineer and Tech Lead roles across Europe
Experience
Smartbroker
Berlin – Apr 2022 to Present
Principal iOS Engineer
Dec 2023 to Present
- Own technical direction for the iOS platform in a regulated, business-critical fintech environment.
- In the first three months, helped the team ship faster and with fewer surprises by tightening engineering standards, improving development flow, and putting more attention on user experience.
- Led major architecture changes, introduced Mobile DevOps practices, and helped iOS engineers raise their bar on ownership and code quality.
- Contributed to 99.999% system availability during peak trading periods, including April 2025 market volatility with record transaction volumes and zero downtime.
- Enabled a 400% increase in scalability for concurrent users and transactions through platform and process improvements.
- Drove technical initiatives that increased KPI coverage by 25%, improving Customer Experience Model accuracy and supporting an estimated 570,000 additional trades per year.
Platform Engineering Lead
Dec 2023 to Present
- Introduced stronger development practices and technical coaching that helped reduce code defects by 30%.
- Helped grow the team across iOS, Android, and backend by hiring 5 of 6 engineers and supporting engineers as they moved into broader technical scope.
- Pushed CI/CD, release automation, coding guidelines, and clearer QA ownership across platforms.
- Kept delivery steady through periods of organizational change by giving teams clear technical direction and practical support.
- Prototyped AI-driven product ideas hands-on to test new opportunities for the team.
Mobile Team Lead
Apr 2022 to Dec 2023
- Designed and delivered a scalable mobile platform with a modern architecture.
- Built the architectural foundations of the iOS and Android mobile team, setting technical direction, delivery practices, and quality standards from the ground up.
- Owned Platform-domain delivery and built robust SDKs that were adopted broadly by other teams.
Lead Mobile Engineer – NA-KD
Remote – Jul 2021 to Mar 2022
- Set up the mobile engineering function and introduced practical workflows that improved delivery cadence and clarity.
- Guided developers through refactoring and modularization work without slowing delivery.
Mobile Team Lead – Verimi
Berlin – Jan 2020 to Jun 2021
- Led the re-architecture of the mobile app across iOS and Android with QA and cross-functional partners.
- Improved app performance and reliability through focused technical initiatives.
- Integrated security- and identity-focused SDKs including Build38, WebID, and SealOne.
Zalando SE
Berlin – Jan 2016 to Dec 2019
Senior iOS Developer
Jan 2019 to Dec 2019
- Joined Merchant Operations during a major transition phase and delivered new features for the Merchant Platform.
- Worked on the Merchant iOS app to make the merchant experience smoother and more efficient.
- Delivered mobile features for the Merchant Platform and coordinated with multiple internal teams.
iOS / Backend Developer
Jan 2016 to Dec 2018
- Developed the Movmnt iOS app and contributed to the launch of the Zalando Beauty app.
- Collaborated closely with backend teams using Scala Play and Spring Boot (Kotlin).
iOS Developer – Shopbox ApS
Copenhagen – Oct 2014 to Dec 2015
- Built the iOS POS app from scratch and selected optimal hardware for integrations.
- Validated and documented the business logic for "Restaurant Mode" with 50+ test cases, aligning the product with real-world workflows and improving quality.
Other Experience (2006–2014)
Cairo & Remote
- Held engineering roles in startups and agencies, building mobile, web, and backend systems; mentored junior developers and delivered products for clients including Pfizer and telecom operators, as well as an enterprise hospital system.
Education
BSc. Computer Science
Cairo University, Egypt – 2005
Principal iOS Engineer, Tech Lead, SwiftUI, Combine, UIKit, Swift, Objective-C, Cocoa Touch, Xcode, Fastlane, MVVM, VIPER, SOLID, TDD, CI/CD, REST, GraphQL, App Store, TestFlight, Firebase, Crashlytics, XCTest, Jenkins, Bitrise, Agile, Scrum, Technical Leadership, Team Mentoring, Hiring, Stakeholder Management, Backend Integration, Mobile Architecture, Clean Architecture, Modularization, App Performance Optimization, User Experience, Product Collaboration, Release Management, Mobile DevOps, Platform Scalability, API Design, Authentication, Push Notifications, Feature Flags, Analytics, A/B Testing, Jira, Confluence