Available to hire
Hi, I’m Ahmed Eissa, a Senior iOS Engineer based in Abu Dhabi with over six years of experience building clean, maintainable, and testable mobile software. I have led architecture refactors and collaborated on high-impact projects with a daily active user base reaching millions. I’m passionate about crafting elegant iOS solutions and delivering measurable improvements across teams.
I enjoy turning complex requirements into solid, scalable architectures using Swift, SwiftUI (where appropriate), Combine, MVVM patterns, and modern concurrency. I excel at shipping features that users love while improving activation, retention, and satisfaction metrics, and I thrive in collaborative environments that emphasize quality, automation, and fast iteration.
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Chinese
Intermediate
Work Experience
Senior iOS Engineer at Avrioc - Comera Technology
October 1, 2024 - PresentLeading iOS development for social apps featuring live streaming, chat, and calling. Implemented UI with SwiftUI and Combine; integrated live streaming via WebRTC and VOIP; implemented real-time features using Socket connections. Collaborated on architecture decisions, code reviews, and feature delivery for apps with millions of users.
Senior iOS Engineer at Qasr Almas Information Technology Co
October 1, 2024 - September 9, 2025Architected and contributed to the new app architecture, accelerating activation of new users by 75%. Built a social sports app for Chinese users where fans can view matches, participate in forums, and access news. Employed MVVM-C, integrated Combine, and supported video upload features for stories; added like/reply/share interactions to boost engagement.
Senior iOS Engineer at SIGMA EMEA
December 31, 2024 - September 9, 2025Crucial refactoring team member on My WE app (30M users, 13M DAU). Developed and launched a telecom app with Telecom Egypt and Huawei enabling account management, online payments, and bill management, resulting in 40% higher customer satisfaction and 25% fewer inquiries. Implemented Fastlane to automate releases, cutting deployment time by 70%. Led UI improvements that reduced churn by 50% and increased customer lifetime value by 30%.
iOS Engineer at Addicta
December 31, 2023 - September 9, 2025Led the mobile iOS department; oversaw system design and implementation for two apps serving 600k+ users and drove the launch process. Refactored components toward clean architecture, boosting feature velocity by 65% and cutting bug rate by 80%. Delivered testing-ready features within tight timelines and enabled contract renewal for an additional 2 years. Implemented secure in-app payments supporting multiple methods, increasing in-app transactions by 70%.
iOS Engineer at Umosco
December 31, 2022 - September 9, 2025Worked on educational and dental service apps; contributed to new architecture for three iOS apps and reduced activation cost by 70%. Implemented a 360° spherical panorama view using orientation sensors with interactive pan and pinch-to-zoom. Added product detail QR code scanning and social login (Facebook, Google, Apple) to simplify onboarding.
iOS Engineer at Awamer AlShabaka
December 31, 2020 - September 9, 2025Contributed to 10+ apps across E-commerce, Social, and Content domains. Deployed 3 apps to the App Store and improved issue resolution time by 25%. Investigated and fixed complex defects, reducing overall resolution time and improving stability.
Senior iOS Engineer at Avrioc - Comera Technology
October 1, 2024 - PresentWorking on social apps with live streaming videos, chatting and calling. Proficient in SwiftUI and Combine; using WebRTC, VOIP and Socket for live streaming, video call and real-time communication.
Senior iOS Engineer at Qasr Almas Information Technology Co
October 1, 2024 - September 9, 2025Participated in creating the new architecture for one app and guided iOS design; contributed to reducing activation time for new users by 75%. Developing and launching a social sports app for Chinese-speaking users; implemented MVVM-C pattern and Combine; supported video/story uploads and social interactions.
Senior iOS Engineer at SIGMA EMEA
December 31, 2024 - September 9, 2025Selected as a crucial member of refactoring team for My WE app serving 30 million users (13 million daily active). Implemented a telecom app with Telecom Egypt and Huawei, enhancing customer experience with account management, online transactions, balance top-ups and bill payments; achieved 40% increase in customer satisfaction and 25% reduction in inquiries; Used Fastlane for app release automation reducing development time by 70%; Led UI improvements reducing churn by 50% and increasing LTV by 30%.
IOS Engineer at Addicta
December 31, 2023 - September 9, 2025Led mobile iOS department; designed and implemented system architecture for an app serving 600,000+ users; refactored components to clean architecture increasing feature velocity by 65% and reducing bug rate by 80%; led development of 2 apps and supported testing under tight deadlines leading to renewal of contract for 2 more years; added secure mobile payments increasing in-app transactions by 70%.
IOS Engineer at Umosco
December 31, 2022 - September 9, 2025Helped create new architecture for 3 apps; lowered activation cost for new users by 70%; implemented 360 b0 spherical panorama view, QR code scanning and social logins (Facebook, Google, Apple).
IOS Engineer at Awamer AlShabaka
January 1, 2020 - September 9, 2025Contributed to the development of 10+ apps across E-commerce, Social, and Content; deployed 3 apps on the App Store; improved issue resolution time by 25% and stability.
Senior iOS Engineer at Avrioc - Comera Technology
October 1, 2024 - PresentWorking on social apps with live streaming videos, chatting and calling. SwiftUI and Combine. Working on live streaming videos and calling. Using WebRTC, VOIP and Socket.
Senior iOS Engineer at Qasr Almas Information Technology Co
October 1, 2024 - September 9, 2025Developing and launching a social sports app that serves users in Chinese; features for football matches, forums, details and news. Participated in creating the new architecture for 1 app and guided iOS design; activation of new users by 75%. Used MVVM-C, Combine; uploading videos as stories and social posts.
Senior iOS Engineer at SIGMA EMEA
January 1, 2024 - September 9, 2025Crucial member of the refactoring team for the My WE app with 30 million users and 13 million daily active users. Developed a telecom app with Telecom Egypt and Huawei to manage mobile and home internet accounts, online transactions, balance top-ups, and bill payments, improving customer satisfaction by 40% and reducing inquiries by 25%. Implemented Fastlane automation to accelerate releases by 70% and UI improvements that reduced churn by 50%.
IOS Engineer at Addicta
January 1, 2023 - September 9, 2025Led the mobile iOS department; refactored components to clean architecture, boosting feature velocity by 65% and lowering bug rate by 80%. Worked on 2 apps and assisted in securing a renewed 2-year contract; added secure mobile payments supporting multiple methods and increasing in-app transactions by 70%.
IOS Engineer at Umosco
January 1, 2022 - September 9, 2025Created architecture for 3 apps; lowered activation time for new users by 70%. Implemented a 360° panorama view with orientation sensors; QR-Code scanning for product details; social login integrations (Facebook, Google, Apple).
IOS Engineer at Awamer AlShabaka
January 1, 2020 - September 9, 2025Contributed to the development of 10+ apps in E-commerce, Social, and Content; deployed 3 apps on the App Store and improved issue resolution time by 25%.
Senior IOS Engineer at Avrioc - Comera Technology
October 1, 2024 - PresentLeading mobile development for social apps featuring live streaming, chat and calling. Implemented UI with SwiftUI and reactive patterns using Combine; integrated real-time media with WebRTC, VOIP, and socket signaling. Collaborated with backend and design to deliver scalable features for a growing user base, refactoring components for better testability, and mentoring junior engineers.
Senior IOS Engineer at Qasr Almas Information Technology Co
October 1, 2024 - September 9, 2025Developing and launching a new architecture for a social sports app serving Chinese-speaking users. Designed iOS architecture using MVVM-C for clarity, reusability and testability, integrated Combine for asynchronous flows, and enabled uploading videos as stories and creating posts with like/reply/share capabilities. The onboarding and activation of new users improved by 75% due to streamlined onboarding and performance optimizations.
Senior IOS Engineer at SIGMA EMEA
January 1, 2024 - September 9, 2025Selected member of refactoring team for the My WE app, targeting 30 million users with 13 million daily active users. Led development of a cutting-edge telecom app in collaboration with Telecom Egypt and Huawei, enabling customers to manage mobile and home internet accounts, perform online transactions, top up balances and pay bills. Implemented Fastlane-based CI/CD, reducing release cycles by 70% and enabling rapid iterations; redesigned UI to reduce churn by 50% and increased customer lifetime value by 30%.
IOS Engineer at Addicta
January 1, 2023 - September 9, 2025Led the iOS department and drove system design for an app serving over 600,000 users in the Middle East. Refactored components from MVP to clean architecture, increasing feature velocity by 65% and reducing bugs by 80%. Oversaw the development of two apps, resolved testing-phase issues under tight timelines, and introduced secure mobile payments, boosting in-app transactions by 70%.
IOS Engineer at Umosco
January 1, 2022 - September 9, 2025Worked on educational and dental service apps, helping create new iOS architectures for three apps and guiding design decisions. Reduced activation time for new users by 70%; implemented a 360° spherical panorama view with orientation sensors, detection and zoom; added QR-code product scanning and social login integrations (Facebook, Google, Apple) to streamline sign-in and usage.
IOS Engineer at Awamer AlShabaka
January 1, 2020 - September 9, 2025Contributed to the development of 10+ apps across E-commerce, Social and Content spaces. Deployed 3 apps to the App Store and improved issue resolution time by 25%. Investigated and fixed complex defects, leading to more stable releases.
Senior IOS Engineer at Avrioc - Comera Technology
October 1, 2024 - PresentLead iOS development for social apps featuring live streaming, chat, and calling. Implemented using SwiftUI and Combine. Worked on live streaming video, voice calls, WebRTC, VOIP, and Socket. Contributed to architecture, performance, and reliability to support a product with a large daily active user base.
Senior IOS Engineer at Qasr Almas Information Technology Co
October 1, 2024 - October 9, 2025Developed and launched a social sports app for Chinese users; created a new IOS architecture for one app and guided design to reduce activation time for new users by 75%. Implemented MVVM-C, Combine, and media capabilities including video uploads as stories and social posts with like/reply/share features.
Senior IOS Engineer at SIGMA EMEA
January 1, 2024 - October 9, 2025Selected as a crucial member of the refactoring team for the My WE app serving 30 million users with 13 million daily active users. Led development of a telecom app with Telecom Egypt and Huawei, enabling seamless management of mobile and home internet accounts, online transactions, balance top-ups, and bill payments. Achieved 40% higher customer satisfaction and 25% fewer inquiries; automated app releases with Fastlane, reducing release cycles by 70%. Improved UI/UX to reduce churn and increase customer lifetime value by 30%.
IOS Engineer at Addicta
January 1, 2023 - October 9, 2025Led the mobile iOS department, guiding system design and implementation for a regional app serving over 600,000 users. Refactored components toward clean architecture, increasing feature velocity by 65% and reducing bug rate by 80%. Developed two apps and ensured timely delivery, contributing to a contract renewal for two additional years. Implemented secure in-app payments and expanded payment options to boost in-app transactions by 70%.
IOS Engineer at Umosco
January 1, 2022 - October 9, 2025Created architecture for three apps, lowering activation time for new users by 70%. Implemented a 360° spherical panorama view with orientation sensors, and QR-code product scanning to provide detailed information. Integrated social login (Facebook, Google, Apple) to streamline onboarding and usage.
IOS Engineer at Awamer AlShabaka
January 1, 2020 - October 9, 2025Contributed to the development of 10+ high-quality apps across E-commerce, Social, and Content categories. Deployed 3 apps on the Apple Store and improved issue resolution time by 25%, while addressing complex defects to boost overall stability and reliability.
Senior IOS Engineer at Avrioc - Comera Technology
October 1, 2024 - PresentLeading iOS development for social apps featuring live streaming, chat, and calling. Implemented UI using SwiftUI and Combine; integrated live streaming with WebRTC, VOIP, and Socket communications to deliver real-time, scalable user experiences.
Senior IOS Engineer at Qasr Almas Information Technology Co
October 1, 2024 - October 9, 2025Developed and launched a new architecture for a social sports app, guiding iOS design to accelerate activation of new users by 75%. Implemented MVVM-C patterns and Combine; enabled video/story uploads and social interactions.
IOS Engineer at SIGMA EMEA
December 31, 2024 - October 9, 2025Key member of the refactoring team for the My WE app serving 30M users with 13M daily active users. Contributed to a telecom app with Huawei and Telecom Egypt, improving customer satisfaction by 40% and reducing inquiries by 25%. Led Fastlane automation, cutting release time by 70% and enhancing subscription management to reduce churn by 50%.
IOS Engineer at Addicta
January 1, 2023 - October 9, 2025Led the mobile iOS department, migrating components to clean architecture to boost feature velocity by 65% and cut bug rate by 80%. Built and maintained two apps under challenging timelines, expanding renewal opportunities with key clients and enabling secure in-app transactions that grew usage by 70%.
IOS Engineer at Umosco
January 1, 2022 - October 9, 2025Participated in creating the new architecture for three apps, guiding iOS design and reducing activation time by 70%. Implemented a 360° spherical panorama view, QR-code product scanning, and social login integration to enhance user onboarding and engagement.
IOS Engineer at Awamer AlShabaka
January 1, 2020 - October 9, 2025Contributed to the development of 10+ apps across E-commerce, Social, and Content domains. Deployed 3 apps to the Apple App Store and improved issue resolution time by 25% while addressing complex defects to stabilize products.
Education
Bachelor of Computer Science at Mansoura University
January 1, 2016 - January 1, 2020Bachelor of Computer Science at Mansoura University
January 1, 2016 - January 1, 2020Bachelor of Computer Science at Mansoura University
January 1, 2016 - January 1, 2020Bachelor of Computer Science at Mansoura University
January 1, 2016 - January 1, 2020Bachelor of Computer Science at Mansoura University
January 1, 2016 - January 1, 2020Bachelor of Computer Science at Mansoura University
January 1, 2016 - January 1, 2020Qualifications
Industry Experience
Software & Internet, Telecommunications, Education, Media & Entertainment, Professional Services
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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