Frontend
JavaScript, TypeScript, React, Angular, Playwright, and shared frontend patterns.
Interview Preparation Platform
Interview Prep Hub
One entry point for study notes, flash cards, and practice drills across frontend, backend, DevOps, and leadership tracks.
Backend
C#/.NET architecture, systems design, and senior interview prep.
Management
Leadership and organizational effectiveness study tracks (Scrum.org PAL I and PAL-EBM).
DevOps
Kubernetes, Docker, CI/CD, infrastructure as code, and DevSecOps practices for senior engineers.
OWASP & AppSec
Web & API security for interviews and real systems — the OWASP Top 10, injection, access control, authentication, cryptography, and a secure SDLC.
System Design
The architecture-interview competency — scoping a vague prompt into numbers, then defending the storage, caching, and scaling decisions those numbers imply. Study notes, drills, and exams for each area.
Algorithms & Data Structures
The CS-fundamentals competency — algorithms, data structures, and performance tuning — with explicit material to study, to practise, and to be tested on in an interview.
Platform Case Study
A real self-hosted multi-tenant SaaS (dloizides.com) explained end to end — products, microservices, shared libraries, DevOps, and AI-assisted development.