Technical Skills
Designing for Scalability: From 1 to 1 Million Users
The journey from a single server to a distributed system. Why you shouldn't build Netflix on Day 1, and when to actually use Microservices.
Functional Programming: Stealing the Best Ideas for OOP
You don't need to know Haskell. How specific FP concepts (Immutability, Pure Functions) make your OOP code safer and easier to test.
The Art of Observability: Stop Flying Blind
Monitoring tells you "The system is down." Observability tells you "Why." A guide to the three pillars: Metrics, Logs, and Tracing.
Domain-Driven Design (DDD): Writing Software That Matches Reality
Why "Anemic Domain Models" are killing your project. A guide to Ubiquitous Language, Bounded Contexts, and rich logic.
Big O Notation: It’s Not Just for Interviews
Why your API works with 10 users but crashes with 10,000. A practical guide to Time Complexity for production engineers.
Mental Models for Engineers: Thinking in Systems
Hardware gets faster. Frameworks change. Mental Models are forever. Learn First Principles, Second-Order Thinking, and CAP Theorem.
REST API Design: It is Not Just About GET and POST
Designing APIs that other humans (and robots) enjoy using. Status codes, Idempotency, and Versioining strategies.
Understanding Technical Debt: It is a Tool, Not a Crime
Tech Debt is not just "bad code." It is a deliberate loan you take out to ship faster. How to manage it before it bankrupts you.
Git Essentials: Stop Breaking the Build
You think you know Git, until you have a merge conflict on Friday at 5pm. Rebase vs Merge, Atomic Commits, and how to undo mistakes.
Effective Code Reviews: How to review without being hated
Code reviews are for quality, not for showing off. How to give feedback that improves the code without destroying the human.
Debugging: The Science of Getting Unstuck
What to do when you have stared at the code for 4 hours and it still doesn't work. Rubber Ducking, Binary Search, and taking a walk.