Сергей Кожемяченко

Launched and optimized user acquisition campaigns and traffic purchasing for Last Day on Earth and Sunday City across Liftoff, Unity Ads, ironSource, Applovin, Moloco, and Mintegral. Owned purchasing strategy and test roadmaps, monitored budget execution and KPI attainment, and improved scale through hypothesis testing and automation.

Coordinated mobile app development by prototyping with the team, tracking deadlines, and participating in platform requirement discussions. Managed internal testing (TestFlight and Google Play Console) and handled app store preparation, legal materials, publishing, analytics, and compatibility checks across devices.

Launched and optimized user acquisition campaigns for Age of Magic and Spring Valley across Liftoff, Applovin, Unity Ads, Moloco, ironSource, and Persona.ly. Scaled Liftoff purchasing volume (x3) while maintaining ROI, restarted ironSource after a pause, and improved creative testing workflows via API-driven automated uploads and testing.

Owned full-cycle mobile traffic purchasing for key games, launching and scaling campaigns across Unity Ads, Vungle, Moloco, Persona.ly, Facebook, Google Ads, and Taboola (web). Partnered with designers to create and optimize creatives, evaluated new channels via test launches, and reported campaign effectiveness.

Managed end-to-end user acquisition for Pokerist and Blackjackist, launching and optimizing campaigns across Applovin, Facebook, Kayzen, Mintegral, and Xiaomi. Produced performance reports to track results and drive ongoing traffic scaling.

Led user acquisition for mobile games/apps and web services by launching campaigns, optimizing traffic to shifting KPIs, and evaluating new channels via test launches. Managed partner billing, delivered campaign and quarterly/annual reports, supported reporting via Partner Reporting API, and trained interns on CPI purchasing.

Owned full-cycle mobile traffic purchasing by launching, optimizing, and scaling campaigns, including A/B testing with creatives developed with designers. Supported fraud and non-targeted install detection and refunds processes, and contributed to the global release and promotion of Gardenscapes.

Master’s degree in International Economics at the Crimean Economic Institute of the Kyiv National Economic University named after V. Hetman (Simferopol).