Publication
Android and iOS UI Testing with Calabash
https://www.toptal.com/developers/app/android-ios-ui-testing-calabash
Alexander is available for hire
Hire AlexanderAlexander Gedevanishvili
Verified Expert in Engineering
JavaScript Developer
Madrid, Spain
Toptal member since January 20, 2016
Bio
Alexander is a senior mobile and full-stack engineer with 20+ years of experience building high-quality products for international clients. He has led complex projects for startups and global platforms used by millions, taking ownership of architecture, performance, reliability, and delivery. Over the last decade, he has worked remotely with lots of international teams, helping them scale, modernize, and ship robust, production-ready solutions with a strong focus on quality and maintainability.
Portfolio
Toptal Clients
Android, iOS, React Native, Flutter, Swift, Kotlin, Objective-C, Java...
Olmait
React Native, Python, Google Cloud, Amazon Web Services (AWS), Django, FastAPI...
Product Savvy Consulting
React Native, Java, Objective-C, iOS, Android, Code Review, Source Code Review...
Experience
- JavaScript - 18 years
- PHP - 14 years
- Android - 11 years
- iOS - 10 years
- Objective-C - 10 years
- Java - 8 years
- Swift - 8 years
- React Native - 7 years
Preferred Environment
Git, Cursor AI, Codex, Claude Code, Integrations
The most amazing...
...thing I've developed is the implementation of an encryption algorithm using elliptic curve cryptography (ECC).
Work Experience
Senior Software Engineer
2016 - PRESENT
Toptal Clients
- Developed and maintained 20+ production mobile, web, and back-end systems, delivering full-stack features using React, React Native, Node.js, and REST APIs for global products used by hundreds of thousands of users.
- Collaborated with 20+ clients across distributed teams of varying sizes, delivering production-ready solutions in fast-paced, remote environments.
- Led development of iOS and Android applications, leveraging native and cross-platform stacks to design scalable, maintainable mobile architectures for long-lived products.
- Developed and shipped web and back-end systems using modern JavaScript frameworks and Node.js, designing scalable APIs and production-ready services.
Technologies: Android, iOS, React Native, Flutter, Swift, Kotlin, Objective-C, Java, JavaScript, TypeScript, Dart, Source Code Review, App Store, Google Play Store, Expo.io, CI/CD Pipelines, Agile Software Development, GitHub, Android SDK, Scrum, SQLite, MongoDB, Object-oriented Programming (OOP), Bitbucket, Task Analysis, Back-end, Google Cloud, APIs, Google Cloud Platform (GCP), Artificial Intelligence (AI), Software Development, Xcode, Android Studio, Mobile Development, Cross-platform, GraphQL, React Navigation, API Integration, WebSockets, Real-time Streaming, Dependency Injection, Coroutines, Jetpack Compose, Ktor, Retrofit, Expo, Front-end Development, Mobile App Development, Firebase Authentication, RevenueCat, Amazon Web Services (AWS), AI Automation, PostgreSQL, React Testing Library, Firebase Cloud Functions, Minimum Viable Product (MVP), Workflows, B2B, Full-stack Development, User Experience (UX), Real-time Data, Automation, REST APIs, Front-end, Automated Testing, Software Design, Software Architecture, Scalability, Code Auditing, AI Tools, Startups, Vibe Coding, Large Language Models (LLMs), Stripe, SQL, Android Development, Application Architecture, Model View ViewModel (MVVM), iOS App Development, JSON, React Query, Mobile Apps, UIKit, Blockchain, Cloud, Computer Science, AI-assisted Development, Figma, Push Notifications, GPS, Anthropic, Claude, Google Maps, App Development, Firebase Cloud Messaging (FCM), Authentication, Docker, Location Services, OAuth, Web Development, Lovable, QR Codes, WebRTC, Apple Push Notifications, Geolocation, Payments, SwiftUI, Microservices, Realm, Hilt, Android Jetpack, SaaS, Scalable Architecture, HIPAA Compliance, LLM Integration, Web App Development, AI Agents, Retrieval-augmented Generation (RAG), Vector Databases, Cross-platform App Development, Debugging, Chrome DevTools, Gecko, Claude API, Next.js, Jest, Application State Management, Responsive UI, Agentic Coding, AI Integration, AI Engineering, Express.js, React Router, Architecture, Integrations
Full-stack Engineer
2022 - 2023
Olmait
- Developed scalable Python back-end services, including API endpoints and background jobs for async processing; improved reliability and reduced response times for key workflows.
- Built and maintained a cross-platform React Native app (iOS and Android) using GraphQL for efficient data fetching; delivered features, fixed bugs, and improved app stability in production.
- Set up and managed cloud infrastructure on Google Cloud and AWS, including deployments, environment configuration, and monitoring; ensured scalable and reliable system performance.
Technologies: React Native, Python, Google Cloud, Amazon Web Services (AWS), Django, FastAPI, Minimum Viable Product (MVP), Workflows, Healthcare IT, B2B, Full-stack Development, User Experience (UX), REST APIs, Application Architecture, JSON, Mobile Apps, Cloud, AI-assisted Development, Push Notifications, App Development, Authentication, Docker, OAuth, Web Development, Kubernetes, SaaS, Scalable Architecture, Web App Development, Cross-platform App Development, Debugging, Chatbots, Elasticsearch, React Router, Architecture, Integrations
Client-side Team Lead
2016 - 2018
Product Savvy Consulting
- Developed and shipped applications across Android, iOS, and web platforms.
- Delivered applications across the entire lifecycle, from development to testing and deployment.
- Collaborated with the UX designer to create a compelling user interface.
- Coordinated with team members on application design.
- Taking a lead role in front-end architecture, technical decisions, and delivery.
- Carried out design and code reviews with the team.
Technologies: React Native, Java, Objective-C, iOS, Android, Code Review, Source Code Review, Interviewing, Technical Hiring, App Store, Google Play Store, CI/CD Pipelines, Agile Software Development, GitHub, Android SDK, Scrum, SQLite, MongoDB, Object-oriented Programming (OOP), Task Analysis, APIs, Software Development, Xcode, Android Studio, React, Mobile Development, Cross-platform, React Navigation, API Integration, WebSockets, Dependency Injection, Retrofit, Front-end Development, Mobile App Development, Amazon Web Services (AWS), Mapbox, Minimum Viable Product (MVP), Healthcare IT, Healthtech, User Experience (UX), Automation, REST APIs, Front-end, Automated Testing, Software Design, Software Architecture, Startups, SQL, Android Development, Application Architecture, Model View ViewModel (MVVM), iOS App Development, JSON, Offline Data Synchronization, Supabase, Mobile Apps, UIKit, Cloud, Push Notifications, GPS, Google Maps, App Development, Firebase Cloud Messaging (FCM), Authentication, Location Services, OAuth, Web Development, Apple Push Notifications, Geolocation, Technical Leadership, Cross-platform App Development, Debugging, Chrome DevTools, Responsive UI, Architecture
Software Developer
2016 - 2017
OECD
- Built and maintained a large-scale survey platform used by international organizations, working across front-end, back-end, and data pipelines to ensure reliability, scalability, and secure data collection.
- Developed and extended a custom content management system (CMS) enabling non-technical teams to manage surveys, questionnaires, and publications, improving editorial workflows and reducing operational overhead.
- Designed and implemented a reporting and analytics platform that transformed raw survey data into actionable insights through dashboards, exports, and automated reporting pipelines for stakeholders.
Technologies: Doctrine, Symfony, PHP, GitHub, Laravel, Object-oriented Programming (OOP), Task Analysis, Back-end, APIs, Software Development, API Integration, Front-end Development, Full-stack Development, REST APIs, Front-end, Software Design, SQL, Application Architecture, Authentication, OAuth, Web Development, Web App Development, Responsive UI, Architecture
Android Developer
2015 - 2015
Mobility, Ltd.
- Developed a mobile banking application for one of the largest banks in Georgia.
- Delivered applications across the entire lifecycle, from development to testing and deployment.
- Worked with the UX designer to create a compelling user interface.
- Interacted directly with clients to understand their requirements and implement them in the application.
- Published applications on Google Play and Apple App Store.
Technologies: Google API, Java, Android SDK, App Store, Google Play Store, GitHub, SQLite, Object-oriented Programming (OOP), APIs, Software Development, Xcode, Android Studio, Mobile Development, API Integration, WebSockets, Front-end Development, Mobile App Development, User Experience (UX), REST APIs, Android Development, Mobile Apps, Push Notifications, Google Maps, App Development, Geolocation, Payments
Senior Software Developer
2010 - 2015
Silknet JSC
- Developed the company's ERP system, which contained over thirty modules.
- Worked on the software's architecture and design. Created RESTful APIs and SOAP web services.
- Integrated the ERP system with the company's billing software.
- Integrated the ERP system with a revenue service API.
- Developed mobile applications for some modules of the ERP software.
Technologies: REST, SOAP, Ext JS, PHP, PL/SQL, Oracle, Code Review, Source Code Review, Interviewing, Oracle PL/SQL, Object-oriented Programming (OOP), Subversion (SVN), Back-end, APIs, Software Development, API Integration, CRM, Analytics
Web Developer
2008 - 2010
Neomedia, Ltd.
- Built about thirty websites for different companies.
- Developed software for microfinance organizations.
- Created a content management system that is still used today.
- Implemented an eCommerce system with online payments.
- Optimized website user experience for mobile devices.
Technologies: Adobe Flash, SOAP, MySQL, PHP, Ajax, JavaScript, CSS, HTML, Object-oriented Programming (OOP), Symphony, Software Development, Front-end, FFmpeg
Website Developer
2007 - 2008
Happy, Ltd.
- Created a content management system for the websites that were owned by the company.
- Built a website for a real estate company with the content management tool.
- Developed a website and an administrative tool for an HR company.
- Managed, trained, and collaborated with the company's interns.
Technologies: CSS, HTML, Adobe Flash, Ajax, JavaScript, MySQL, PHP, Object-oriented Programming (OOP), Software Development
Web and Software Developer
2005 - 2007
Association “Poseidon”
- Developed dynamic websites and software for different clients.
- Translated programming courses into the Georgian language.
- Worked as a programming and software development coach for students.
Technologies: C++Builder, C++, C, Adobe Flash, MySQL, PHP, JavaScript, CSS, HTML, Software Development
Experience
Classdojo - Global EdTech Platform (Teachers, Parents & Students)
https://www.classdojo.comI acted as a primary mobile engineer on the ClassDojo mobile applications, delivering core product features, architectural improvements, and performance optimizations for a large-scale consumer application used by tens of millions of users. I also contributed to web and back-end services.
Pacer Mobile App
https://www.pacertrain.com/Pacer is a social sports platform that matches athletes with people at a similar level to train and practice together. I worked on the product as a full-stack engineer, contributing to both the mobile application and back-end services.
Dugri: Peer Support Network
https://apps.apple.com/us/app/dugri-peer-support-network/id1524345770Dugri is a peer support network. The app was developed using a cross-platform tool and is built for iOS and Android. It contains a live chat that uses Firebase technology. The live audio call is also implemented in the application.
Platform for Innovations in Statistics
PISTA is an online platform that collects information on innovations and statistical capacity in official statistics and systematically matches identified challenges to potential solutions.
The platform is created using the PHP Symphony framework.
The platform is created using the PHP Symphony framework.
The Mark Manson App
An Android app of the American self-help author and blogger Mark Manson where you can get access to his work. It is a native Android app written in Kotlin, using Android Clean Architecture. Google's in-app subscription is integrated into the app.
ERP System
An ERP system for a large telecommunication company that included over 30 modules. Thousands of users worked with the system daily.
It uses Oracle Database on the back end and integrates with many third-party APIs.
It uses Oracle Database on the back end and integrates with many third-party APIs.
Cat Tailer
https://cattailer.comCat Tailer is an innovative pet tracking device designed specifically for cats. It uses Bluetooth Low Energy technology to assist you in finding your pet within your yard or neighborhood.
I worked on mobile applications that connected Cat Tailer devices with iOS and Android phones.
I worked on mobile applications that connected Cat Tailer devices with iOS and Android phones.
WolfPack
This Android and iOS mobile application helps bikers ride in groups by providing turn-by-turn navigation and real-time communication tailored for group rides. The platform offers a wide range of features and is useful for other drivers and travelers as well. I contributed to both the mobile applications and the web portal, working on core features and overall system integration.
Walem
An application for food orders and delivery, built using Kotlin and Android Clean Architecture.
I worked on three applications that were connected to each via a server-side API and push notification service.
I worked on three applications that were connected to each via a server-side API and push notification service.
TableBid
I worked on exclusive real-time access to the hottest venues and lowest minimums, a mobile application that helps users bid and book tables in different bars, clubs, restaurants, and more.
I developed the mobile side of the project and the server side.
I developed the mobile side of the project and the server side.
iVerified
The ultimate free, simple, safe, and reusable identity and age verification app for Android and iOS.
The application uses machine learning to scan information from various types of documents and also age detection by a live camera.
The application uses machine learning to scan information from various types of documents and also age detection by a live camera.
Know Stone
https://apps.apple.com/tt/app/stone-pass-kidney-stones/id1491822657A mobile application created with React Native. It is a community education effort to help people have better discussions with their healthcare providers by sharing the decisions made by others with similar kidney stone conditions.
Mobile Banking Application
https://play.google.com/store/apps/details?id=ge.mobility.basisbankA mobile banking application for iOS and Android that provided remote services for the bank and helped users carry out a variety of banking operations. It uses different authentication methods to secure personal user data.
Education
2003 - 2010
Master's Degree in Computer Science
Ivane Javakhishvili Tbilisi State University - Tbilisi, Georgia
Certifications
MAY 2018 - PRESENT
React Native
Toptal Academy
Skills
Libraries/APIs
Node.js, React, React Navigation, Retrofit, React Testing Library, REST APIs, React Query, Google Maps, React Router, Facebook API, Google API, Stripe, WebRTC, Claude API, FFmpeg, Doctrine, Google Maps API, TensorFlow, Instagram API, X (formerly Twitter) API, LinkedIn API
Tools
Android Studio, Xcode, Git, Bitbucket, GitHub, Expo.io, WebView, Expo, Firebase Authentication, Codex, Claude Code, Figma, Claude, Firebase Cloud Messaging (FCM), Apple Push Notifications, Android Jetpack, Subversion (SVN), Gecko, Adobe Flash, C++Builder, Amazon Simple Notification Service (SNS), Android NDK
Languages
CSS, Kotlin, Objective-C, Swift, JavaScript, Java, PHP, TypeScript, Python, SQL, HTML, GraphQL, C, C++, Dart
Frameworks
KOIN, React Native, Android SDK, Flutter, Redux, Next.js, Express.js, UIKit, SwiftUI, Laravel, Ext JS, Jest, Ktor, Symfony, Core Bluetooth, Django
Paradigms
Object-oriented Programming (OOP), Agile Software Development, Scrum, Mobile Development, Cross-platform, Dependency Injection, B2B, Automation, Automated Testing, Application Architecture, Model View ViewModel (MVVM), App Development, Microservices, Gamification, HIPAA Compliance, REST, Clean Architecture
Platforms
Firebase, iOS, Oracle, Android, Google Cloud Platform (GCP), RevenueCat, Docker, Amazon Web Services (AWS), Mapbox, Blockchain, Kubernetes, Bluetooth Low Energy (LE)
Storage
MySQL, Oracle PL/SQL, PostgreSQL, JSON, Realm, SQLite, MongoDB, Google Cloud, Elasticsearch, PL/SQL
Other
Software Development, Code Review, Source Code Review, Interviewing, Technical Hiring, Task Analysis, Back-end, App Store, Google Play Store, APIs, Information Technology, Programming, Artificial Intelligence (AI), Performance, Native Mobile Apps, Full-stack, API Integration, WebSockets, Coroutines, Front-end Development, Mobile App Development, Firebase Cloud Functions, Minimum Viable Product (MVP), Healthcare IT, Full-stack Development, User Experience (UX), Real-time Data, Front-end, Software Design, Software Architecture, Scalability, Code Auditing, AI Tools, Startups, Vibe Coding, Android Development, iOS App Development, Offline Data Synchronization, Mobile Apps, Cloud, Computer Science, AI-assisted Development, Push Notifications, GPS, Anthropic, Authentication, Location Services, OAuth, Web Development, QR Codes, Geolocation, Payments, Hilt, SaaS, Scalable Architecture, Technical Leadership, LLM Integration, Web App Development, AI Agents, Architecture, Cross-platform App Development, Debugging, Chrome DevTools, CRM, Application State Management, Responsive UI, Analytics, AI Integration, AI Engineering, Integrations, Objective-C++, CI/CD Pipelines, GitHub Actions, Real-time Streaming, Jetpack Compose, AI Automation, Workflows, Healthtech, Large Language Models (LLMs), Design, Supabase, Lovable, Retrieval-augmented Generation (RAG), Vector Databases, Agentic Coding, Chatbots, Ajax, SOAP, Bluetooth Beacons, Symphony, Machine Learning, Cursor AI, FastAPI
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