Aleksandr Kumenko
Verified Expert in Engineering
Software Developer
Moscow, Russia
Toptal member since October 4, 2023
Aleksandr is a highly skilled back-end developer with a robust mathematical background. He is proficient in multiple programming languages and technologies, including C++, Scala, and Python. Eager to work on challenging assignments, he works well independently or seamlessly integrates into pre-existing teams and effectively mentors others. Having contributed to esteemed Russian technology enterprises such as Yandex, Tinkoff, and Sber, Aleksandr brings expertise and experience to any project.
Portfolio
Experience
- Computer Science - 7 years
- C++ - 7 years
- Back-end - 4 years
- Python - 2 years
- Game Development - 2 years
- Deep Neural Networks (DNNs) - 1 year
- Reverse Engineering - 1 year
- Computer Vision - 1 year
Availability
Preferred Environment
Visual Studio Code (VS Code), Git, Linux, CMake
The most amazing...
...thing I've developed is a low-level library for displaying an Electron app as an overlay in any game for AI game assistants.
Work Experience
Senior C++ Developer
Sberbank
- Developed an inference pipeline to apply computer vision models on devices.
- Contributed to code quality by applying modern C++ practices.
- Built a CI pipeline for project build and test automation.
Senior C++ Developer
SberGames
- Developed an in-game overlay library for displaying an Electron app on top of any game in C++.
- Designed and documented an API for integrating a JavaScript app with a C++ library.
- Created automated build scripts for a multimodule project.
- Worked with low-level OpenGL and DirectX calls, DLL injection, disassembly, virtual function table manipulation, the Windows API system calls, and Chromium and Electron source code.
Java Developer
Heatherglade
- Fixed font-rendering shared-memory algorithm and optimized font atlas generation, facilitating the creation of base letters at a size of 128x128 within a reasonable timeframe.
- Made several improvements to a world generation engine and added support for multiple cave layers.
- Improved a pathfinding algorithm in a voxel-based world.
C++ Developer
DataSakura
- Managed Cut the Rope game content updates with new minigames and integrated cross-promotions.
- Updated the game code to make it eligible for Google Play Pass integration.
- Worked on game technical updates, including supporting new iOS and Android versions, fixing bugs, and updating advertisement software development kits (SDKs).
Senior C++ Developer
Yandex.Market
- Participated in incident management that involved watching, monitoring, and resolving abnormal situations.
- Developed new features and resolved bugs in a market indexer pipeline.
- Implemented unit tests for each feature I had to develop.
Senior Scala Developer
Tinkoff
- Designed and developed a microservice for a Stories API that served thousands of resource planning systems (RPSs), making Tinkoff the 1st bank in Russia to add Stories to an app.
- Implemented logic for multicurrency cards in an API, making Tinkoff one of the 1st Russian banks to allow users to instantly switch card currency in the app.
- Added many minor features and fixed bugs using Jira as a task tracker.
Perl and C++ Developer
Crazy Panda
- Implemented highly efficient calculation of odds of winning in poker in C++, reducing production servers' load by several times.
- Implemented an API for a scratch card mini-game in World Poker Club, allowing the company to stabilize inflation of the in-game economy.
- Implemented many minor features and bug fixes in the World Poker Club game.
Experience
Gosu AI
• Creating a Node.js C++ module.
• Injecting DLLs in other processes.
• Hooking OpenGL, DirectX, and WinAPI calls.
• Reverse-engineering parts of the game code.
• Using WinAPI inter-process communication facilities.
• Designing a JavaScript API for the library and explaining it to JavaScript developers.
• Making reproducible builds.
• Filing a bug report in Chromium and patching it.
In short, I took a barely working MIT library from GitHub and polished it into a production-ready solution.
Education
Undergraduate Coursework in Mathematics and Computer Science
Lomonosov Moscow State University - Moscow, Russia
Skills
Libraries/APIs
WinAPI, OpenGL, LWJGL, Node.js, DirectX, AES
Tools
Git, CMake, Emscripten, Canvas
Languages
C++, SQL, Java, Python, Scala, Perl, JavaScript, TypeScript
Platforms
Visual Studio Code (VS Code), Linux, Docker, Android, iOS
Frameworks
Electron
Storage
JSON
Other
Computer Science, Networking, Linear Algebra, Multithreading, Complexity Theory, Computer Vision, Game Development, Back-end, Data Structures, Algorithms, High-load, Encryption, Computer Graphics, Operating Systems, Machine Learning, Reverse Engineering, Probability Theory, Discrete Mathematics, Mathematical Analysis, Deep Neural Networks (DNNs), IPC, API Hooking, APIs, Big Data, SOAP, Game Back-end, APK, RSA
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