Case Studies
A collection of technical challenges, strategic initiatives, and architectural decisions I've navigated. Each case study represents a specific problem space and the solution patterns applied.
Strategic
Technical Due Diligence
Comprehensive audit for a VC firm investing in a SaaS platform.
Challenge
Determine if the legacy codebase could support 10x growth post-investment.
Result
Identified critical scalability blockers; Investment proceeded with a 6-month replatforming plan I designed.
Key Deliverables
Due DiligenceAuditStrategy
Architectural
Payment Gateway Unification
Unifying 5 global payment providers into a single API abstraction.
Challenge
High complexity, regulatory requirements, and zero-downtime requirement.
Result
Reduced integration time for new payment methods from 4 weeks to 3 days.
"The architecture Andreas designed is still the backbone of our system 3 years later. Rock solid."
— Marc Johnson, VP Engineering
ArchitectureGoHexagonal Architecture