Working FundamentalsHow software stayspredicatableARVIN JAYSON CASTRO
Read the Preface

How I Build Systems

Practical engineering principles I rely on when shipping production systems.

These principles guide how I approach real-world feature delivery, system stability, and long-term maintainability.

Why This Matters in Real Systems

  • In my experience, systems fail through hidden assumptions
  • I've found that complexity compounds silently
  • When building production systems, architecture determines velocity
Built By
Arvin Jayson Castro
Position
Senior Systems Engineer
Focus
Production Systems & Multi-Tenant SaaS
Operating Model
Used to build real production systems
Language
English

How This Connects To My Work

These principles reflect the patterns and invariants I prioritize when building production systems within collaborative team environments.

How This Thinking Shows Up in Real Systems

In my experience, these principles guide how I approach multi-tenant SaaS platforms, structure domain boundaries, and reduce long-term system fragility.

Systems either hold — or they decay.

Architecture-first thinking prevents silent fragility and protects long-term velocity.

If you're responsible for systems that must hold under pressure — we should talk.

These principles support how I deliver reliable, maintainable features within collaborative team environments.