TIMUR LOSIEV

Available to hire

Experience Level

Expert
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Expert
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Expert
Expert
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Expert
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Intermediate
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Language

English
Advanced
Spanish; Castilian
Beginner

Work Experience

Senior Software Engineer (Core Team) at Playrix
August 1, 2023 - Present
Designed and implemented next-generation user analytics system in C++, Python and JavaScript, improving analytics collection without interfering with business logic. Contributed to ML integration (LLM, ONNX) to build a Match-3 bot trained on user replays, increasing level stability and making the difficulty curve more predictable. Designed scalable data extraction and analytics applications. Implemented scalable asset processing tools with Python, LLM and RAG, reducing Tech Designer workload from 3 months to 5 minutes. Fixed core bugs, optimized performance, and supported live-ops.
Tech Lead C++/TypeScript/JS/Swift/Java Developer at Ilyon
December 1, 2017 - March 1, 2023
Coordinated with managers, QA, and creative/sound teams to deliver features for multiple live games. Led live-ops for F2P bubble shooter and match-3 titles, implementing Tournaments, Friends, and Gacha systems. Worked primarily with Cocos2d-x (Spider Monkey, V8). Created a TypeScript-to-C++ transpiler and integrated it with Cocos2dx to unify TypeScript projects. Resolved crashes, reduced performance bottlenecks, and maintained ANR at ~0.1%. Performed code reviews and contributed as Scrum Master / Senior C++/QT Developer.
C++ Developer / QT Developer at Corel Draw
December 1, 2016 - December 1, 2017
Contributed to a high-load cross-platform typography project with ~70 C++ developers. Wrote C++ code and managed Scrum board in Jira. Implemented a multithreaded concurrency system to improve core performance. Coached newcomers and trainees.
Team Leader, Senior C++ Developer at GAF Media
January 1, 2014 - January 1, 2017
Created a mobile game based on Cocos2d-x and a self-developed animation toolset (GAF). Managed a team of 7 senior C++ developers and fostered open, professional relationships to rapidly resolve issues.
Senior C++ Developer at Lulu Software
September 1, 2011 - October 1, 2012
C++ development for Ad-Aware antivirus (Windows). Core developer for Soda PDF on Windows and macOS/iOS; provided operational system support and contributed to test-driven development environment.
Middle C++ Developer at Gameloft
May 1, 2009 - October 1, 2012
Contributed to features development for multiple titles, including UI and game logic components. Worked on Tournaments, Daily Bonus, Lotteries, Sales, and more; contributed to Asphalt 6, Gangstar Vegas, Green Farm, Driver, and other titles.
Senior C++ Developer at Corel Draw
December 1, 2016 - December 1, 2017
Worked on a high-load C++ cross-platform typography project with around 70 C++ developers distributed across remote teams. Wrote C++ code and managed SCRUM board in Jira. Implemented a multithreaded concurrency system to improve core performance. Performed coaching of newcomers and trainees.

Education

Bachelor of Science in Computer Science And Programming at Technical University, Luhansk, Ukraine
January 11, 2030 - May 1, 2008
Bachelor of Science in Computer Science And Programming at Technical University, Luhansk, Ukraine
January 11, 2030 - May 1, 2008

Qualifications

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Industry Experience

Gaming, Software & Internet, Media & Entertainment, Professional Services