Danil Ilinykh Email & Phone Number

Хельсинки, Уусимаа, Финляндия

Leading one of teams working on 3d map engine. Our team is dedicated to improving performance and reducing memory consumption.

Was responsible for several parts of 2GIS Mobile SDK: map, search, statistics, update.Mentored team of 4 developers.Coordinated several teams' work for SDK. All capabilities specified in contracts were shipped on time. SDK was successfully integrated in several customer applications with tens of millions active users.Designed and partially implemented protocols for SDK statistics collection.Analyzed and reduced SDK library size on 24%.

Designed and partially implemented Map API of 2GIS Mobile SDK (https://docs.2gis.com/ru/android/sdk/reference).Designed and took part in implementing API for interaction between SDK core library and SDK platform libraries.Coordinated several teams' work for SDK: made roadmaps, tracked progress and facilitated discussions.

Decided to focus on technical tasks.Finished started earlier global refactoring. These changes have already been proved very useful for development speedup and in reducing code complexity.Constantly spent time profiling different user scenarios and improving their time. The biggest task was to reimplement generalization algorithm in order to support hundreds of thousands simultaneous objects on map.Created script for aggregating clang compilation time traces… Show more Decided to focus on technical tasks.Finished started earlier global refactoring. These changes have already been proved very useful for development speedup and in reducing code complexity.Constantly spent time profiling different user scenarios and improving their time. The biggest task was to reimplement generalization algorithm in order to support hundreds of thousands simultaneous objects on map.Created script for aggregating clang compilation time traces (https://github.com/woodroof/clang_combined_time_trace), analyzed results, improved project compilation speed by 16% and suggested ways for additional improve. Show less

As a team leader I can claim credit for at least part of our *team* work improvements.Switched from occasionally code review to mandatory one.Created CI from scratch. All code changes are tested on all supported platforms. Checks include compilation, unit tests and execution of various additional scripts. These tests are mandatory and run automatically for all merge requests.All errors are now collected for all applications (only crashes were processed before). We analyze these… Show more As a team leader I can claim credit for at least part of our *team* work improvements.Switched from occasionally code review to mandatory one.Created CI from scratch. All code changes are tested on all supported platforms. Checks include compilation, unit tests and execution of various additional scripts. These tests are mandatory and run automatically for all merge requests.All errors are now collected for all applications (only crashes were processed before). We analyze these errors after every release.The team creates different tools to make application & data testing easier.Various integration and testing notes are gathered and combined into useful reports automatically.We monitor many metrics such as different subsystems performance, build time, network problems and client network connection speed.Average build time on build servers has been decreased from over 2 hours to only 10 minutes.We are focusing on creating self-organizing team. Every engineer thinks not only about his task, but the product and the team as a whole. Every team member helps with integration, tracks feature launches and able to catch any task. There is no need in control. If engineer takes some task, this task will be done.There are some *personal* achievements as well.Designed and partially implemented EAV-database for storing and protocol for synchronizing (CRDT) various application data. This protocol is currently using for users' favorites and curated lists of interesting places and organizations.Implemented support of residential building entrances. This task resulted in various improvements of out data storage format in order to maintain same size after addition of hundreds of thousands entrances (russian public article: https://habr.com/company/2gis/blog/415263/).Convinced several teams to start global refactoring to support some future features and greatly reduce complexity of application-side code. Show less

Working in a core platform team closing the needs of our mobile products (c++):Created a library to support various location following modes and transitions between them caused by direct or indirect user actions.

Led a team of 3 backend developers (c++), 2 frontend developers (js), web producer and 2 QA engineers after the old lead had to move to Moscow.Was responsible for communications with management and other development teams. Managed to build a really good team.We shipped 3 beta versions that resulted in good public responses, but after that the project was cancelled in order to reinforce our mobile teams.

Added support of Google KML format to our current desktop product.Worked on a platform for the 4th version of all offline 2gis products (c++, win/linux/osx + android/ios/winphone):Designed a new version of our update system aimed at fixing some flaws of the old one and meeting new requirements, wrote a client-side implementation. Peak month traffic is more than 10 PiB (non-uniform, major peaks on first week).

Worked on current graphics engine (c++, cross-platform, agile):Developed cartographical API layer on the top of low-level graphics engine.Created a library for event management and tools for position controlling with keyboard, mouse and fingers: zoom, drag, rotation, flight between objects, etc.Developed highly efficient storage for cartographic data (binary, R-tree).Created a simple but powerful program for engine testing.Wrote export library for the export team.All of… Show more Worked on current graphics engine (c++, cross-platform, agile):Developed cartographical API layer on the top of low-level graphics engine.Created a library for event management and tools for position controlling with keyboard, mouse and fingers: zoom, drag, rotation, flight between objects, etc.Developed highly efficient storage for cartographic data (binary, R-tree).Created a simple but powerful program for engine testing.Wrote export library for the export team.All of the above are still in use!Maintained roadmap, did task prioritization, coordinated changes with other development teams.Gathered a small but highly professional group of 5 developers. All of the developers were better in 3d-graphics than me, but I count as my contribution that we started using unit tests, doing code review, writing really good documentations and creating useful utilities. Show less

Worked on various high-load services (c++, PL/pgSQL, POSIX, PHP, scrum):Ported many libraries from WinAPI to POSIX.Moved our projects from vcproj to qmake with automatic test execution, VCS commit description extracting, etc. Yep, I know, I should have used cmake or whatever, but it worked fine at the time. 4 years later we switched to gyp and later to cmake.Designed CDN for 2gis updates. This implementation is still in use, though most of our products have long switched to updated… Show more Worked on various high-load services (c++, PL/pgSQL, POSIX, PHP, scrum):Ported many libraries from WinAPI to POSIX.Moved our projects from vcproj to qmake with automatic test execution, VCS commit description extracting, etc. Yep, I know, I should have used cmake or whatever, but it worked fine at the time. 4 years later we switched to gyp and later to cmake.Designed CDN for 2gis updates. This implementation is still in use, though most of our products have long switched to updated system. Peak month traffic was more than 500 TiB (non-uniform, most requests are within the first week).Led a team of 5 developers. IMO, the main achievement was to convince our management to move from old self-written http server to nginx, it was not so easy as it reads. Show less

Various tasks in 2gis desktop including optimization and pathfinding (c++, winapi):Switched pathfinding from Dijkstra to A*, added support of preference points, turnarounds on edges, etc.Developed rich feedback UI for firm information.

Worked on the system for collectors (PL/SQL, SQL)The system was successfully sold to several banks, some small and one federal. Installed the system.Optimized the system to work smoothly with ~10K users and finance information of ~10M clients.Had to study project domain really well as bank workers had big difficults in explaining their needs.Managed to organize work of 3 developers and freed the manager to perform his main aim - telling tales to our customers.

Was a part of university informatization team (c++, PL/SQL, SQL, PHP, HTML, CSS, js, AJAX).Created client GUI-application in Borland Builder for one of university departments.Wrote libraries for data exchange with the systems used in personnel department and library.Created a web application for filling students' progress.Created a web application for managing all information of university chairs and creating yearly reports to the Ministry of Education and Science.Completely… Show more Was a part of university informatization team (c++, PL/SQL, SQL, PHP, HTML, CSS, js, AJAX).Created client GUI-application in Borland Builder for one of university departments.Wrote libraries for data exchange with the systems used in personnel department and library.Created a web application for filling students' progress.Created a web application for managing all information of university chairs and creating yearly reports to the Ministry of Education and Science.Completely rewrote PHP-engine of the university site and wrote HTML, CSS and js for frontend part (some of my code is still there!). Show less