About Petar
Build senior-level JavaScript & Architecture skills — faster.
In the age of AI and layoffs, deep technical expertise is the only thing that keeps you irreplaceable. AI can write the code. It can't decide what to build, how to scale it, or why one architecture beats another.
That's the gap I help you close.
The Problem
Most JavaScript devs hit a ceiling around year 3–5.
You ship features. You know React. You've used Node in production. But when the architecture conversation starts — system design, scaling, trade-offs — you go quiet.
AI is changing the rules. The devs who stay employable aren't the ones who write code fastest. They're the ones who architect systems, lead technical decisions, and think two steps ahead of the model.
You're not stuck because you're not smart enough. You're stuck because nobody taught you to think like an architect.
I was there too.
My Story
8+ years building production systems.
Fortune 500s in cloud, finance, and travel. Ex-startup CEO and CTO. Speaker at GitNation and Geekle. I've mentored developers from junior to senior to architect — and written two books about the road.
Every promotion came down to one shift: I stopped writing code and started solving problems.
That's what The T-Shaped Dev is built on. Depth where it matters. Breadth where it counts. Architect-level thinking, applied to real code.
100K+ engineers learn with me — across the newsletter, LinkedIn & X
A community of senior-curious developers.
What I'll help you do
- Grow from Mid → Senior → Architect (the path nobody maps for you).
- Make architecture decisions you can defend in any room.
- Build systems that scale — and survive the AI era.
- Architect production AI features — RAG, agents, evals — not demo-ware.
- Get through Senior+ interviews without freezing on system design.
- Lead technically before you have the title.
What I Cover
Everything drawn from production code — no theory cosplay.
Backend
Node.js, Express, TypeScript, REST, GraphQL.
Architecture & Design
Cloud Patterns, DDD, Modular Monoliths, Microservices, Distributed Systems.
Frontend
React, Redux, TanStack, Next.js, Tailwind CSS.
Mobile
React Native, Expo, TypeScript.
Databases
PostgreSQL, MySQL, MongoDB.
Principles
SOLID, DRY, KISS, YAGNI, Clean Architecture.
Where to start
Three ways I can help you close the gap.
The Books
The Conscious React & The Conscious Node — 250+ production tips on architecture, design, and clean code. From $29.
Free Playbooks
The React & Node.js Architecture Playbooks — the decision trees senior engineers use, free as PDFs.
The Newsletter
One production-grade architecture tip a week, read by 30K+ engineers. Free forever.
Ready to think like an architect?
Join 30K+ engineers leveling up to senior architecture skills.