At Exness, I analysed payment provider APIs and end-to-end flows, then specified third-party integrations and payment-routing logic. I documented requirements, API mappings, edge cases, and failure scenarios for delivery.
At Tinkoff, I contributed to moving transaction traffic from TSYS to an in-house processing solution and supported authorization services. Earlier, I helped deliver an electronic document management solution at Magnit and developed anti-fraud system modules at beeline Russia.

