Backend BE-01 Plate iii-A CS.001
Backend API Redesign
Hexagonal Architecture & CQRS at Scale
Context FinTech platform · 1.2M active users · 10× traffic growth
Outcome Monolithic REST API → maintainable hexagonal service without rewrite
Observations in the field — architecture decisions under real constraints
Case Studies
Architecture decisions are only legible in context. Each study presents the system as found, the constraints that shaped the approach, the patterns applied, and the outcomes measured.
4 Studies
4 Domains
Lead SA Role
Field observations — four studies across all domains
Data Pipeline DP-01 Plate iv-B CS.002
Data Pipeline Migration
Medallion Architecture & Schema-Driven Validation
Context E-commerce analytics · 40M events/day · 3 downstream consumers
Outcome ETL monolith → observable contract-tested platform · 94% failure reduction
Infrastructure INFRA-01 Plate v-A CS.003
Infrastructure Platform Migration
Infrastructure as Code & Container Orchestration
Context 14 production services · snowflake servers · days-long deploy cycles
Outcome Hand-patched hosts → immutable IaC pipeline · deploy lead time: days → minutes
Frontend FE-01 Plate ii-A CS.004
Micro-Frontend Migration
Component Composition & Module Federation
Context SaaS platform · 6 product teams · fortnightly release cadence
Outcome Monolithic React app → independently deployable UI domains · on-demand releases