Senior Mobile Product Engineer and UI Developer with 15+ years of experience building high-performance, user-centric web and cross-platform mobile applications. I specialize in React Native and full-stack engineering, combining robust architecture with strong UX/UI patterns to deliver production-ready enterprise and consumer products. Known for scalable design systems, streamlined CI/CD pipelines, and highly maintainable code. I’ve contributed to global brands and worked across mobile, backend/API integrations, automated testing, and release management to accelerate product validation and delivery.…

Özay Ölkan

Senior Mobile Product Engineer and UI Developer with 15+ years of experience building high-performance, user-centric web and cross-platform mobile applications. I specialize in React Native and full-stack engineering, combining robust architecture with strong UX/UI patterns to deliver production-ready enterprise and consumer products. Known for scalable design systems, streamlined CI/CD pipelines, and highly maintainable code. I’ve contributed to global brands and worked across mobile, backend/API integrations, automated testing, and release management to accelerate product validation and delivery.…

Available to hire

Senior Mobile Product Engineer and UI Developer with 15+ years of experience building high-performance, user-centric web and cross-platform mobile applications. I specialize in React Native and full-stack engineering, combining robust architecture with strong UX/UI patterns to deliver production-ready enterprise and consumer products.

Known for scalable design systems, streamlined CI/CD pipelines, and highly maintainable code. I’ve contributed to global brands and worked across mobile, backend/API integrations, automated testing, and release management to accelerate product validation and delivery.

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Skills

Experience Level

React Native
Expert
UI
Expert
React JS
Expert
Figma
Expert
JavaScript
Expert
TypeScript
Expert
API
Expert
Node.js
Expert
Stripe
Expert
Web Design
Expert
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Language

English
Fluent
Turkish
Fluent
Swedish
Advanced

Work Experience

React Native Developer at After Class AB, Stockholm
August 1, 2025 - Present
Took over development and ongoing maintenance of an existing app for managing after-school activities (afterclass.app). Implemented new features, improved code quality, and optimized Firebase integration including authentication, push notifications, and crash reporting. Enhanced UI/UX consistency and streamlined app performance for students and parents; app released to the App Store and Google Play.
Senior UI Developer / Mobile Engineer at Amig o Sy stems AB
January 1, 2025 - Present
Led cross-platform migration from legacy Android security/workforce software to unified React Native solutions. Drove Amigo Tools front-end redesign and React Native implementation for enterprise real-time patrolling, workflow mapping, and GPS tracking used in surveillance and industrial sectors. Built high-reliability mobile interfaces for mission-critical Amigo Safe, optimizing real-time alarm monitoring, incident confirmation, and rapid operator prevention workflows. Partnered with executive stakeholders to map user journeys and deploy rapid feedback loops with early adopters, shortening feature iteration cycles. Designed and executed a comprehensive multi-platform design system in Figma, producing standardized component blocks, custom prototypes, and optimized user flows.
Senior UI Developer at Deloit t e UK
September 1, 2020 - January 1, 2024
Engineered “KIT”, a white-label mobile application built with Flutter & Dart and deployed by major retail corporations including John Lewis & Partners and Burberry. Reduced time-to-market through modular, highly reusable configurations enabling faster rollouts for enterprise multi-client white-label tenants. Led front-end technical tasks across cross-functional engineering sprints while ensuring strict compliance with enterprise security and accessibility baselines.
UI Developer & Fron tend Lead at Keytr ee, London (Remo te)
March 1, 2010 - September 1, 2020
Owned front-end architecture for a complex greenfield CRM application customized for Jaguar Land Rover using React. Managed and mentored a team of developers, enforcing uniform code quality and consistent styling standards across concurrent projects. Set up end-to-end CI/CD release workflows that automated builds and distributions, cutting manual deployment times.
Flash / Flex Interactive Developer at Freelance, London
March 1, 2006 - March 1, 2010
Developed immersive digital experiences and media installations for global brands including Nike, Nokia, and Red Bull. Delivered front-end codebases for top-tier production agencies such as R/GA London and Stink Digital, contributing to notable campaigns including an interactive James Bond exhibition for the Imperial War Museum and branded experiences for Pepsi.

Education

Design for Interactive Media at Middlesex University, London
September 1, 2004 - September 1, 2005
Industrial Engineering at Istanbul Technical University, Istanbul
September 1, 1996 - August 1, 2000

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Computers & Electronics, Retail, Education, Professional Services, Media & Entertainment
    Amigo Safe App

    A mobile system for Amigo Safe SOC, giving operators access to monitored sites, live camera streams, alarm history, notifications, and patrol controls across iOS and Android. I also added tablet support to the codebase, giving the app an adaptive layout across screen sizes. More details at https://www.twine.net/signin

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