What I Deliver: SaaS Multi-Tenancy & Scaling: Design and implement robust, secure, and cost-efficient multi-tenant architectures on AWS (ECS, SQS, Lambda) built for massive scale. Performance & Optimization: Expert-level PostgreSQL optimization and profiling to eliminate bottlenecks and ensure low-latency API performance. Monetization Systems: Specialized experience building and optimizing subscription, payment, and DRM​/​security platforms to maximize LTV (Lifetime Value). Production-Ready Code: Idiomatic, highly-tested solutions in Golang and TypeScript (Node​/​React), designed for maintainability and resilience. Architectural Depth: Implementing event-driven architectures (SQS​/​SNS) and designing clear, versioned REST​/​gRPC APIs.