Egor Sharoha

This was a public transportation startup targeting both passengers and drivers. My role was to deliver two MVP mobile applications that would work together alongside the pick-up and drop-off processes. I built the entire architecture that holds up both roles and multiple flavors and implemented the majority of features and layouts, including in-app purchases with Stripe, map integration with a mixture of Mapbox and Leaflet, and a ride process with real-time updates.

A classic scooter-sharing application mainly targeting the Czech Republic market. It covers a broad set of functionality, starting from identity validation and booking to payments with different payment methods and rendering dynamic objects on the map.

As a Flutter mobile developer, I designed the architecture from the ground by following clean architecture principles, participated in making important product-related decisions, helped the client to save money by providing detailed consultancy about optimization options, and closely collaborated with designers and back-end engineers.

I led the refinement of a social media platform on Flutter for Web, iOS, and Android, focusing on enhancing core functionalities and user experience.

CONTRIBUTIONS
• Successfully implemented a robust monetization system under tight deadlines, enabling subscription-based groups with custom pricing.
• Customized payment processing per platform: integrated Stripe for Web and Android and created an in-app purchase system for iOS.
• Established a revenue-sharing model for the group owners, incentivizing content creation and community growth.
• Enhanced app security and performance by centralizing payment operations server-side via Firebase Cloud Functions in Node.js.
• Utilized Firestore for efficient data handling and real-time updates.
• Introduced a user-friendly task-tracking system using Linear for better client interaction and project transparency.
• Resolved compliance issues with Apple's review team, ensuring app guideline adherence.
• Improved overall user experience by optimizing load times, refining UI/UX, and ensuring consistency across platforms, boosting user retention.

A set of small loan-processing applications targeting different countries: Sri Lanka, Kenya, and India. I built them from the ground up by developing an internal development kit consisting of reusable modules for these kinds of products. This allowed speedy delivery and expansion into other countries by simply assembling them from those modules with product-specific tweaks and customization. The most notable features include lengthy registration and forms processing, online support service, tracking of current loan statuses and payments, and new loan application with on-the-fly calculations.

This is a mobile application for sports betting, gambling, and online casinos. Developed as a symbiosis of Vue Native and React Native since it was originally ported from a web app based on Vue.js. I was responsible for a complete design overhaul and transition to cross-platform technologies (React Native) while preserving the original business logic from the web app.

A health and beauty industry startup with applications for two roles: masters and their clients. I built React Native-based applications for each role with unique functionality that revolved around booking appointments in the calendars and numerous social media features, i.e., feeds, portfolios, chats, and reviews. Additionally, there was a third, separate app for masters to manage their bonus programs which I insisted on developing with Flutter since it was relatively small.