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Denis Cherkov is a seasoned software engineer with extensive experience in backend development and web applications. Currently employed at adcombo.com since 2013, Denis specializes in developing and maintaining a CPA network using technologies such as Flask, Tornado, and Asyncio-based libraries, along with SQLAlchemy, PostgreSQL, and ClickHouse. Expertise includes integrating external billing systems, statistics and analytics, and generating reports, as well as handling data caching with Redis. Prior to this role, Denis worked at mediafabric, where responsibilities included web development with Python and Java EE, and experience in frontend development. Earlier freelance work focused on developing web-oriented applications using Python frameworks and optimizing high-load systems. Denis started a career in the banking sector at Escape M, where involvement included ISO 9001 software development and data migration.