I architect high-availability distributed systems, enterprise .NET microservices, and AI-native development platforms that scale under extreme load. With over a decade of lead engineering experience across international markets, my focus centers on domain-driven boundaries, high-throughput caching, and robust cloud foundations that eliminate production downtime and preserve mission-critical systems.

• Enterprise Risk Management & Modernization (InsurTech): Modernized legacy monolithic services into decoupled .NET 8 microservices, eliminating 90% of production downtime and improving throughput by 20% via targeted Redis caching strategies.
• Global Client & Engagement Tax Platform (FinTech & Big-4 Compliance): Engineered a high-throughput gRPC and Azure Service Bus tax calculation engine managing complex international corporate compliance.
• Piql Connect (1,000-Year Arctic Preservation): Built a secure digital ingestion engine designed to preserve humanity's mission-critical archival records for a millennium in the Svalbard Arctic Vault.
• Offshore Oil Rig Telemetry & Spatial Mapper (Energy): Delivered real-time North Sea offshore drilling telemetry ingestion and geospatial tracking scaling on AKS and Cosmos DB.

1. Distributed Microservices & Web APIs: Architecting decoupled, high-availability .NET 8 backends and contract-first Web APIs engineered for extreme uptime.
2. Modern AI & Autonomous Engineering: Accelerating delivery with spec-driven development, custom task automation agents, and data intelligence workflows.
3. Cloud-Native Infrastructure & DevOps: Designing scalable cloud foundations across Azure and AWS with container orchestration and zero-downtime deployments.
4. High-Concurrency Data Tuning: Optimizing complex data layers, Redis caching, and database storage for sub-50ms data paths under heavy load.

"Turning complex scale challenges into clean, maintainable infrastructure."
Explore case studies and architecture notes at rhasan.bd.