
Gilad Raz
Verified Expert in Engineering
Android Developer
Toronto, ON, Canada
Toptal member since April 6, 2026
Gilad is a senior Android engineer who has worked at Uber and Amazon, building large-scale mobile apps for hundreds of millions of users. At Uber, he led features that improved core metrics, including increasing conversion by about 1% and reducing cancellations. Gilad specializes in Kotlin and Jetpack Compose, focusing on clean, production-ready solutions that balance speed, quality, and scalability.
Portfolio
Experience
- Kotlin - 6 years
- Model View ViewModel (MVVM) - 6 years
- Clean Architecture - 6 years
- Android SDK - 6 years
- CI/CD Pipelines - 5 years
- Java - 5 years
- Coroutines - 5 years
- Jetpack Compose - 3 years
Preferred Environment
Android Studio, Kotlin, Jetpack Compose, Coroutines, Model View ViewModel (MVVM), Clean Architecture, REST APIs, Kotlin Multiplatform Mobile (KMM), CI/CD Pipelines, Unit Testing
The most amazing...
...work I've done is improving conversion by about 1% on a $2+ billion booking flow, driving an estimated $20+ million increase in annual volume.
Work Experience
Founding Engineer – Mobile & SaaS
FAST SEO LIMITED
- Designed and built an AI-powered cross-platform mobile app (Android and iOS) with intelligent quote generation, reaching 2,000+ downloads and validating product-market demand.
- Designed and developed a cost estimation platform for contractors.
- Enabled detailed budgeting and automated PDF/Excel reporting, used in real projects to streamline pricing workflows.
Android Software Engineer
Uber
- Led end-to-end development of a flight-based trip feature in the Uber Rider app, which has 500+ million downloads, improving the app's conversion by about 1% and reducing cancellations.
- Improved pre-trip screen performance by about 50% by migrating from legacy Java layouts to Jetpack Compose and optimizing loading flows.
- Introduced a flexible back-end interface enabling reuse across teams and supporting hundreds of millions of users.
Android Software Engineer
Amazon.com
- Designed and launched a break management feature for Amazon drivers, enabling optional and mandatory breaks with notifications and back-end support, improving driver experience and contributing to better working conditions globally.
- Pioneered the integration of the Flipper debugging tool into the Amazon Flex app, improving development efficiency and enabling faster debugging for hundreds of Android engineers.
- Contributed to the design and implementation of the Alexa calling module migration to a modern MVVM architecture, improving performance by 30% and enabling a more scalable mobile app.
Android Software Engineer
HP Inc
- Served as the sole Android developer for a cloud printing SDK integrated into HP Smart and HP Roam apps, enabling cloud-based printing for millions of users.
- Collaborated with cross-functional teams to integrate the SDK into HP Smart and enterprise applications, ensuring seamless user experience and stable production releases.
- Optimized Bluetooth and wireless printer discovery to improve efficiency and reduce battery consumption, delivering a smoother and more reliable user experience.
Experience
Uber Rider App – Reserve Screen
CostingWizard
https://costingwizard.com/Amazon Flex App – Driver Break
https://flex.amazon.com/The feature handled real-world constraints such as active deliveries, timing conflicts, and user interruptions, ensuring a smooth and reliable experience. This work improved driver experience and supported better working conditions across a global user base.
Alexa App – Calling Module
https://www.amazon.com/Alexa-App/b?ie=UTF8&node=18354642011Education
Master's Degree in Business Administration (MBA)
EADA Business School and HHL Leipzig Graduate School of Management - Barcelona, Spain, and Leipzig, Germany
Bachelor's Degree in General Sciences (major in Computer Science)
Open University, Israel - Ra'anana, Israel
Software Practical Engineering Degree in Computer Software Development
Bosmat College - Haifa, Israel
Skills
Libraries/APIs
REST APIs, RxJava 3, React, Node.js, RxJava, Retrofit 2
Tools
Android Studio, Git, Jenkins
Languages
Kotlin, Java, C++, Assembly
Frameworks
Android SDK, Dagger 2
Paradigms
Model View ViewModel (MVVM), Clean Architecture, Object-oriented Programming (OOP), Unit Testing, Model View Intent (MVI)
Platforms
Android, Firebase, AWS IoT
Storage
Databases
Other
Jetpack Compose, Coroutines, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, CI/CD Pipelines, Algorithms, Data Structures, Online Payments, AI Automation, Operating Systems, Computer Networking, Product Thinking, business impact, Data-driven Decision-making, Business Analysis, Financial Analysis, Marketing Strategy, Electronics, Software Engineering, Computer Architecture, Computers Networks, Digital Systems, Motif, Large Language Models (LLMs), FastAPI, Payment APIs, Google Analytics 4 (GA4), UI Development, Room, Networking, Polling APIs, AI Model Training
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