ONE.DEV.ALL One architect. Every layer.
DISTINCTION: O'Reilly Architecture Kata Semifinalist
DOMAIN: Cloud & Enterprise Architecture
EXPERIENCE: 20+ Years
★ Semifinalist — O'Reilly Worldwide Architecture Kata (March 2025)
◆ DDD Distilled — O'Reilly (Jan 2026)
◆ TOGAF® Foundation — The Open Group (Aug 2025)
◆ Certified Enterprise Architect (Jul 2025)

Soumik Das
Senior Software Architect

// CLOUD-NATIVE ARCHITECTURE • AWS / AZURE / KAFKA / ISTIO
VISION:

One 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 at Dow Jones (Factiva), Navy Federal, and Fidelity Investments, and leading the phased Title SOR modernization at Toyota Financial Services.

LinkedIn ↗
CAREER IMPACT SNAPSHOT ● RESULTS & TARGETS
−30%
Cloud Operating Cost
Dow Jones Factiva C++ → AWS EKS & Aurora PostgreSQL
−35%
Targeted Request Turnaround
Toyota Financial Services Kafka platform (projected; phased rollout in progress)
−50%
Platform Downtime
Dow Jones Factiva Istio Service Mesh on EKS
−60%
MTTR Compression
Datadog & CloudWatch observability at Dow Jones Factiva
● BOUNDED CONTEXTS HEALTHY

🎛 01. System Topologies

↔ Swipe to pan • +/− to zoom • tap a node to inspect
Apache Kafka Event Bus (Title Perfection Events)
Decoupling the monolithic Salesforce SOR into asynchronous event-carried state transfer topics (phased rollout), handling cross-domain synchronization between bounded contexts.
Bounded Context
Title & Collateral SOR
Impact
Target: 35% Faster Request Turnaround

🏆 02. Case Studies & ROI

TOYOTA FINANCIAL SERVICES Jan 2026 – Present

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.

Target: -35% Request Turnaround Target: -50% Vendor / DMV Delays Phased deployment in progress Greenfield DDD Blueprint
AWS Fargate Apache Kafka Domain-Driven Design (DDD) Intelligent OCR
DOW JONES (FACTIVA PLATFORM) Nov 2024 – Oct 2025

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.

-30% Operating Cost -50% Platform Downtime -60% MTTR
AWS EKS Istio Service Mesh Aurora PostgreSQL Datadog APM
NAVY FEDERAL CREDIT UNION Oct 2025 – Dec 2025

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.

Referential Integrity Gap & Schema Analysis COBOL to REST
Mainframe COBOL/JCL CGI CACS X Anti-Corruption Layer Batch Reconciliation
FIDELITY INVESTMENTS & O'REILLY KATA Architecture Honors

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.

O'Reilly Architecture Kata Semifinalist $200K Annual Licensing Savings TOGAF Certified
TOGAF Enterprise Arch Architecture Review Boards SOAP to REST Cost Containment

📜 03. Architecture Decisions (ADRs)

ADR-001 // ACCEPTED

Salesforce SOR Decommissioning & Event-Carried State Transfer

Problem: Toyota Financial Services relied on a monolithic Salesforce instance as the System of Record (SOR) for vehicle titles. Monolithic schema coupling made turnaround and vendor interactions slow and hard to change.

Decision: Decommission Salesforce SOR for title operations. Stand up AWS Fargate microservices with an Apache Kafka event bus employing Event-Carried State Transfer to decouple bounded contexts.

Targeted outcome: Shorter customer request turnaround and a clear path off the monolithic Salesforce SOR. Phased deployment is in progress.

⚡ 04. Competency Radar

☁ CLOUD & CONTAINERS
AWS (EKS, Fargate, Lambda, Aurora)92%
Microsoft Azure (AKS, Service Bus)70%
Kubernetes & Containers (EKS / AKS / GKE)88%
Service Mesh (Istio / Envoy)85%
Terraform & IaC82%
⚡ EVENT & DATA
Apache Kafka & Event Meshes90%
Domain-Driven Design (DDD)90%
PostgreSQL / Aurora / DB285%
Elasticsearch / OpenSearch78%
📐 GOVERNANCE & DEVSECOPS
TOGAF™ Enterprise Arch80%
Architecture Review Boards88%
Datadog / CloudWatch Observability85%
Harness / CI/CD Pipelines80%
🏛 LEGACY BRIDGE
Mainframe COBOL & JCL85%
C++ Monolith Decoupling80%
VSAM / Assembler / CACS78%
Anti-Corruption Layer (ACL)90%

💻 05. Interactive CLI

ONEDEVALL-CLI // ARCHITECT DIAGNOSTIC ENGINE ● READY
One.Dev.All Enterprise Architectural Console loaded.
Candidate: Soumik Das (Senior Software Architect, Cloud Native Architecture)
Honors: O'Reilly Worldwide Architecture Kata Semifinalist (March 2025)
Type help or click command shortcuts below:
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soumik@onedevall:~$
CANDIDATE DOSSIER // SENIOR SOFTWARE ARCHITECT

Soumik Das

Senior Software Architect • Cloud Native Architecture • Enterprise Modernization

Executive Value & Professional Bridge:

A Senior Software Architect with 20+ years delivering cloud-native platforms (AWS EKS, Fargate, Lambda, Aurora; Azure AKS & Service Bus; Kafka Event Meshes; Istio) and safely retiring the mission-critical legacy backbones beneath them (Mainframe, COBOL, VSAM, Assembler, C++). Currently defining the greenfield Title SOR modernization as Senior Software Architect for Toyota Financial Services, authoring cross-domain ADRs, and aligning C-suite strategic vision with hands-on domain bounded contexts.

★ Semifinalist — O'Reilly Worldwide Architecture Kata (March 2025)

CAREER IMPACT HIGHLIGHTS:

CERTIFICATIONS & EDUCATION:

📄 Download Executive Resume (.docx) ↓ Connect on LinkedIn (/in/soumikdas22) ↗
SECURE DIRECT COMMUNICATION RELAY // ONEDEVALL

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TRANSMISSION RECEIPT // CONFIRMED:
• RECIPIENT: Soumik Das
• STATUS: DELIVERED
• RESPONSE SLA: Within 24 business hours
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