Soumik Das
Senior Software Architect
VISIONOne architect across every layer, bridging mainframe-grade reliability with cloud-native speed.
Architecting 20+ years of high-velocity transformations across cloud-native topologies (AWS Fargate / EKS / Lambda / Aurora, Azure AKS & Service Bus, Kafka Event Meshes, Istio Service Mesh, DDD) and the high-liability legacy cores they replace (Mainframe, COBOL, VSAM, Assembler, C++). Deleveraging enterprise risk and delivering measurable cost savings and faster delivery for Toyota Financial Services, Dow Jones (Factiva), Navy Federal, and Fidelity Investments.
🎛 01. System Topologies
🏆 02. Case Studies & ROI
Salesforce SOR Decommissioning & Event Mesh
Defined the enterprise transformation map and domain boundaries to safely decommission a monolithic Salesforce Title System of Record (SOR), replacing it with a cloud-native microservices platform on AWS Fargate and an Apache Kafka event bus for event-carried state transfer.
Factiva C++ Monolith to AWS EKS & Istio Mesh
Led the modernization of the flagship Factiva business intelligence query engine from legacy C++ into Java microservices orchestrated on AWS EKS with an Istio Service Mesh.
Mainframe CGI CACS Reverse-Engineering
Reverse-engineered Mainframe COBOL/JCL batch processing flows (CAC220) to modernize collections into CACS X cloud microservices. Led gap analyses and schema conversions to preserve referential integrity across multi-million record lending lines.
Architecture Reviews & Kata Honors
Awarded Semifinalist in the global O'Reilly Worldwide Architecture Kata (March 2025). At Fidelity Investments, built a production-grade toolkit prototype that replaced proprietary Adobe enterprise APIs with open-source frameworks, yielding $200K in annual licensing savings, while contributing to Architecture Review Boards.