Devyou field notes
Running software
after it becomes real.
Practical guidance for founders whose SaaS already has customers: technical ownership, AI-assisted code, architecture, security, and the decisions that keep the product moving.
Do You Need a Technical Cofounder? What AI Changed
When a true equity partner is essential, when fractional technical ownership can bridge the gap, and what AI still cannot own for a founder.
Fractional CTO Rates and Cost: A 2026 Pricing Guide
Current hourly and monthly benchmarks, what each engagement model buys, and how to compare the price with the responsibility you actually need someone to own.
Prototype to Production: A Practical Software Guide
How to turn a fast prototype into dependable software without carrying every early assumption into the product customers now rely on.
Vibe Coding Security: A Production Checklist for Founders
Before customers trust an AI-assisted product with accounts, payments, or data, verify the controls a production application needs.
Vibe Coding Technical Debt: How to Prevent It Before Production
Keep the implementation speed while preventing fragile architecture, regressions, and a codebase nobody can confidently change.
Vibe Coding Limitations: 9 Problems With Complex Apps
Where prompting alone reaches its limits once the product has real workflows, integrations, data, users, and production consequences.
SaaS Architecture: A Practical Guide for Production
The decisions that keep tenant data, billing, background work, and operations reliable as a live product grows.
Multi-Tenant Architecture: Models, Patterns, and Tradeoffs
Pool, silo, and bridge models, with practical controls for customer identity, data isolation, workloads, and operations.
Continuous Product Development: Build, Learn, and Improve
Connect customer evidence, small-batch delivery, production learning, and technical quality into one operating system for the product.