At Cognitico, we were developing a cross-platform game called WordsApp. It is the first game of its class that incorporates the best mechanics of the 3-in-a-row games, and provides the user with a unique way to learn foreign words. The chance to work with a real game engine like Unity3D gave me a new way to look at the world of cross-platform development, and noticeably broadened my knowledge in software design.* Trained and mentored developers* Work planning and team management * Architected both mobile app and server side* Created data transfer protocol for multiplayer, which is optimal for using with WebRTC data channel * Developed an algorithm for matching opponents in multiplayer* Implemented a remote system for storing user progress.* Participated in core-game logic development(C#, Unity3D, Shaders, Firebase Realtime database, Firebase file Storage, Analytics, WebRTC)

Easy Ten is a Russian startup that created products for learning foreign languages. During my time at the company, three applications were created: EasyTen, Upmind, and LingvoTree. All three were based on the same idea, but they took a different approach to the question of memorizing new words for the user. Also in 2016 Easy Ten became one of the first Russian startups to take part in the 500 Startups business incubator.My responsibilities as a senior developer included:* development of a system for storing and synchronizing user progress* development and support of client-server interaction* designing application architecture* mentoring mobile development team membersLater the CTO responsibilities were added:* deciding on overall product architecture, including server APIs* participating in the development of the analytics system, as well as assistance in making decisions based on the collected data* finding the most suitable development tools, including the selection of frameworks and services* recruitment of new employees, interviewing(Objective-C, CoreData, Realm, ReactiveCocoa, AWS, Asynchronous Programming, Reactive Programming, Unit Testing, A/B Testing)

SecondPilot (formerly IZasada) was an app for motorists that allowed users both to mark various points (cameras, police traps, road holes, etc.) on the roads and to validate / reject their relevance. Application was installed more than 500 thousand times in 34 countries around the world. It was also included in the TOP-7 of the best applications for motorists according to the MacDigger Internet portal.Originally participated in the project as a developer:* Developed iOS app* Developed Windows Phone app* Was engaged in design of application architecture* Took part in business model development* Participated in creation of proprietary data exchange binary-protocol* Developer of module for in-app purchasing* Developer of custom data storage system based on SpatiaLite / SQLite Later, the responsibilities of the project manager were added:* Creating the Technical Specifications.* Designing the client-server application architecture, as well an application mathematical model development* production process organisation* Improving the usability of the user interface(Objective-C, GCD, SpatiaLite/SQLite, Core Location, С# )

Working at Black Mana Studios is my first experience as an iOS developer. In this company I participated in the development of two mobile applications.Manuscript was an app for writers to help them write novels. The functionality let them create various notes, build graphs of dependencies and show them at the right moment. As part of this project, I did:* Refactoring the application code* Importing and exporting documents from the macOS version of the appScreenPlay is an application designed to simplify the work of screenwriters, allowing them to write scripts according to the standards of the film industry.My responsibilities included:* Deep source code refactoring* Complete redesign of the application architecture* Adding a Core Data based storage system* Importing and exporting documents from other applications(Objective-C, GCD, Core Data, Core Text)

Development of the special software for the ground segments of the RSS satellite space missions. www.barl.ru (.Net Framework 4.0, C#, WPF, MS SQL 2008, NHibernate, Unity)* Satellite Telemetry Control System,* System Architect and Software Development of Satellite Antenna control system* Satellite image processing and Data store system of Ground Segment of Remote Sensing Satellite missions2009 - development of firmware for mobile object monitoring controller (ARM8 , ANSI C), gathering information from GPS, digital and analog sensors. Information filtering and storage. Receiving control commands by SMS and GPRS. Sending data to a remote server.2008 - System Architect and Software Development of Unmanned aerial vehicle control system,(.Net Framework 3.0 - 3.5, C#, C++ , WPF , JPEG2000)* Development of data transfer protocols between UAV and remote pilot workplace* Displaying UAV telemetry on top of real-time video from onboard cameras2007 – 2009 – mobile object dispatch monitoring system(.Net Framework 3.0 - 3.5, C#, C++ , WPF, WCF, Firebird)* Database structure, stored procedures and triggers implementing data access, permissions management system* System administration software* GPRS Terminal Server development for communication with GPS devices* Data exchange module used between monitoring systems2005 – 2007 – development of navigation system for PocketPC, MS Smartphone and Windows CE.NET(.Net Framework 2.0, C#, C++,Win32 , Anti-Grain Geometry):* development of map rendering engine for vector, point and raster map layers* Development of a data compression format with the ability to swap data into RAM in real time, render and support data over 4GB (with an address space of 4GB)* Road graph compression, shortest path search algorithms* NMEA protocol programming for communicating with GPS/GLONASS devices over a socket

2003 – 2004 – the system of electronic document processing of the bank's internal documents (PHP, Firebird, XML, XAML,SOAP, Apache, FreeBSD, Delphi )2002 - development of the design and engine of the bank website, a remote content management solution with user permissions management. The system of user activity analytics.(PHP, Firebird, Apache,HTML, FreeBSD)