How I Price Projects Now (and Why I Stopped Selling Hours)
Hourly billing taxes efficiency. My shift to value-based fixed bids — tiered proposals, honest estimating, and the conversation that closes them.
// field.notes — writing from Luxor
Engineering notes,written in production.
Practical articles on Next.js, AI agents, and shipping software for real users — by Yousef Romany, full-stack developer & ai agent engineer.
All articles
The archive
[06/06]
RAG Pipelines That Actually Work: Lessons From Shipping Retrieval Systems
Chunking strategy, hybrid search, reranking, and evaluation — the unglamorous decisions that separate RAG demos from systems users actually trust.
Server Actions in Practice: Mutations Without the API Layer
Forms that validate, mutate, and revalidate in a single round trip — how I structure Server Actions in production Next.js apps, and where I still write API routes anyway.
Building AI Agents That Actually Ship: A Practical Architecture
Most agent demos die outside the playground. Here's the production architecture I use — tool schemas, guardrails, memory, and evaluation — that survives real users.
How I Built This Site: A Dark, High-Performance Portfolio with Next.js
The design system, CSS architecture, and performance decisions behind yousefx00.online — one dark theme, three fonts, zero UI libraries.
Freelancing From Luxor, Egypt: What Working With Global Clients Taught Me
Remote full-stack development from Upper Egypt — timezone strategies, communication habits, and why 'available worldwide' is a real business advantage.
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I build web applications and AI-powered automation for businesses worldwide. Available for freelance projects.