Comprehensive Software Architecture Revamp for a Legacy System

I led a full-stack architecture overhaul for a platform that had grown rapidly without a strong foundational structure. The system had become increasingly difficult to scale and maintain due to tight coupling, unclear boundaries, and insufficient observability.

I started with a thorough technical audit: codebase evaluation, runtime profiling, and service dependency mapping. From there, I introduced a modular, service-oriented architecture guided by Domain-Driven Design (DDD) principles. Key decisions included:

Replacing monolith components with well-scoped services

Introducing event-driven communication (via Kafka)

Defining clear bounded contexts and data ownership

Standardising logging, metrics, and tracing across services

I also implemented a set of technical documentation standards and a shared architecture decision record (ADR) repo to foster alignment across teams.

Key Skills: Software Architecture, DDD, Event-Driven Design, System Refactoring, ADRs

Problem Solved: Turned a slow-moving, brittle system into a modular, scalable, and well-documented architecture.