I'm a developer who specializes in backend and full-stack development, with a strong focus on building high-performance, scalable APIs, microservices, and real-time data streaming architectures. From designing end-to-end payment integrations to optimizing big data queries, I ensure systems remain stable and efficient under extreme traffic. As a software developer with over four years of experience, my core expertise lies within the Java and Kotlin ecosystem, alongside modern frameworks like Spring Boot, Quarkus, and React/Vue for front-end integration. I am highly skilled in database performance tuning—having successfully optimized ClickHouse and MySQL databases to handle billions of data points with sub-5-second query responses—and implementing reliable caching strategies using Redis. What differentiates me from other developers is my deep, proven sector experience in the FinTech (payment gateways) and Gaming industries. I don't just write functional code; I architect systems for peak resilience. I have successfully resolved race conditions in real-time gaming transactions using Redis Distributed Locks, eliminated polling bottlenecks with Server-Sent Events (SSE), and designed cloud-native, serverless data pipelines on GCP. My background enables me to navigate strict financial logic, handle high-concurrency systems, and bridge the gap between complex backend architecture and seamless front-end delivery.…I'm a developer who specializes in backend and full-stack development, with a strong focus on building high-performance, scalable APIs, microservices, and real-time data streaming architectures. From designing end-to-end payment integrations to optimizing big data queries, I ensure systems remain stable and efficient under extreme traffic. As a software developer with over four years of experience, my core expertise lies within the Java and Kotlin ecosystem, alongside modern frameworks like Spring Boot, Quarkus, and React/Vue for front-end integration. I am highly skilled in database performance tuning—having successfully optimized ClickHouse and MySQL databases to handle billions of data points with sub-5-second query responses—and implementing reliable caching strategies using Redis. What differentiates me from other developers is my deep, proven sector experience in the FinTech (payment gateways) and Gaming industries. I don't just write functional code; I architect systems for peak resilience. I have successfully resolved race conditions in real-time gaming transactions using Redis Distributed Locks, eliminated polling bottlenecks with Server-Sent Events (SSE), and designed cloud-native, serverless data pipelines on GCP. My background enables me to navigate strict financial logic, handle high-concurrency systems, and bridge the gap between complex backend architecture and seamless front-end delivery.WWWW…