Build fast, sleep well.
AI gives you incredible speed. I make sure your MVP doesn't crumble when the first users arrive.
"Build a secure checkout that scales..."
Hardening the ecosystem
You're building fast.
But is it built right?
AI coding tools like Claude and Cursor are revolutionary, but they can lead non-technical founders down a path of technical debt if not handled correctly.
Hidden Security Risks
AI writes code quickly, but you're not sure if it's opening doors for hackers or leaking data.
Messy Architecture
You've built features, but the underlying structure feels like a house of cards ready to collapse.
Production Readiness
You want to launch, but don't know if your app can actually handle 100 or 10,000 real users.
Technical Roadblocks
You're learning fast, but hitting invisible walls that Claude or ChatGPT can't seem to explain.
The Difference is in the Detail.
AI tools get you 80% there. I show you the final 20%.
Typical AI Output (The Vibe)
Fast, readable, but dangerously insecure.
Built for Production
Through my company, WebMastry, I've managed and delivered production apps since 2021. I don't just 'vibe'—I ship software that works at scale.
AI Co-Teacher Platform
Built an AI assistant helping teachers automate daily tasks, from lesson planning to student feedback, serving thousands of educational organizations.
Climate Compliance Platform
Carbon footprint tracking system for investment decisions, managing environmental data for dozens of thousands of companies worldwide.
"I make sure your AI speed doesn't become your biggest liability."
I'm Yassir. Since 2021, I've built and delivered production software for tens of clients through WebMastry. I've managed projects from solo-founder MVPs to enterprise-scale platforms.
Today, I see a gap. Founders are building faster than ever with AI, but they're missing the "hardened" engineering foundation needed to truly scale. I'm here to fix that.
Professional
~8 years building products and leading development teams.
Philosophical
Obsessed with turning 'vibes' into battle-hardened code.
What you get working with me
From free guidance to hands-on architecture reviews.
Free Resources
In-depth guides on architecture, security, and deployment. The exact stack I use for production.
Start Learning1-on-1 Coaching
Personalized sessions to review your code, fix critical issues, and map out your technical roadmap.
Book a SessionBuild Sprints
Join a small cohort of founders building their MVPs alongside me. Build fast, build right.
Join WaitlistWhat Founders Say
Real feedback from founders building production software.
"Yassir did an excellent job. Working with him allowed me to save several hours of my own development time. He took initiative and kept working on the problem until he figured it out. Very little management was needed. I hope to work with him again in the future."
"WebMastry has done an outstanding job with our SaaS analytics platform. They built it exactly as per our specifications, took initiative to suggest new design features, and went above and beyond to make sure we are happy with the results. They make an excellent external dev team."
"Working with WebMastry was an absolute pleasure. Total professional, Yassir is very knowledgeable and wonderful to work with. Looking forward to working with them again soon."
Latest guides
Tactical advice on vibe coding, architecture, and security.