Andrei Z.

Hi, I'm Andrey – a full-stack developer with 15+ years of experience in mobile, web, and cloud technologies. I develop end-to-end applications using Swift/Kotlin for mobile, React/TypeScript for web, and AWS for backend services. Working across the entire development stack helps me maintain consistent code quality and eliminate integration problems. My background spans multiple technical domains including embedded systems, graphics programming, and low-level systems development. Core Expertise: - Building native mobile and web applications with cloud backend integration - Managing software projects from initial architecture to deployment - Developing scalable systems with reliability and performance in mind - Adapting to new technologies and technical requirements Significant Project: As lead developer for a startup, I built a messaging platform for thousands of daily users. I developed: - Native iOS (Swift) and Android (Kotlin) mobile apps - React web frontend interface - AWS backend infrastructure with data storage The platform features included: - Text, image, and video messaging - User authentication and profiles - Push notifications across platforms - Secure data storage and transmission The system continues to operate with minimal maintenance, allowing the business to focus on growth. Technical Skills: - Mobile: Swift/SwiftUI (iOS), Kotlin/Jetpack Compose (Android) - Web: React, TypeScript, JavaScript - Backend: AWS (Lambda, API Gateway, S3, DocumentDB) - DevOps: Terraform, CI/CD pipelines - Additional: Firebase, Cloud Messaging, Algolia Search Specialized Experience Professional: - Embedded Systems: Developed GIS/mapping solutions with ARINC standards using C/C++ - Graphics Programming: Built OpenGL libraries and drivers for Radeon using C/C++ - Low-level System Development: Created performance-critical applications Personal Projects: - Computer Vision: Built a CNN-based detection system for a manicure app (2017) - Game Development: Created mobile games using C++ with SDL library - Blockchain: Developed smart contracts on Ethereum, TON, and Zilliqa platforms My Approach: I focus on delivering working solutions that meet business requirements. I've helped startups launch products on time and within budget, and I'm comfortable working independently on projects that span multiple technical domains.