Home
About
Categories
Search

Tags

AI ^²
BattleCast ^²
Benchmarks ^¹
D&D ^²
LLM ^¹
Side Projects ^²
TypeScript ^²

Bartosz Jedrzejewski

Husband, Father and Engineering Manager at Meta. Passionate about AI, distributed systems, and tech leadership.

jedrzejewski.ai · @e4developer

About

Tech leadership, AI, and distributed systems. The name e4 comes from a chess move - how I start most of my games.

My Projects

The Dice Drop Board games, D&D and tabletop gaming
BattleCast D&D 5e combat simulator

Featured

HATEOAS - a simple explanation
My favourite Design Pattern - Strategy
Microservices Toolbox: Spring Boot
The Phoenix Project - understanding DevOps
Introduction to Concurrency in Spring Boot
My favourite Software Development Quotes
Spring Boot - Best Practices
Please, stop writing so many for loops!

Categories

Microservices (51) Career (30) Architecture (25) Java (20) Personal (19) Spring Boot (18) Building teams (16) Books (11) DevOps (11) Spring Cloud (11) Choreography (8) Reactive (7) AWS (5) Orchestration (4) Chess (3)

© 2026 e4developer