Portfolio / 2026
Gabriel
Anhaia
Senior Software Engineer
Software engineer, author, and open-source enthusiast. Building scalable systems and sharing knowledge for over a decade.
01
About
A bit about my background and what drives me.
Software engineer, author, and open-source enthusiast based in Berlin, Germany — originally from Brazil. I work across backend systems, distributed architectures, and increasingly with AI. Currently building things at Monta and writing at Dev Warlocks.
Writing is how I think. Whether it's a book, an article, or a well-structured codebase — I believe the act of putting ideas into words is the best way to truly understand them. That's why I've written four books so far, and I don't plan to stop. From PHP design patterns to Go concurrency, from navigating a tech career in Europe to rethinking how we learn in the age of AI — each book started as a curiosity I couldn't let go of.
Beyond writing, I care about clean architecture, developer education, and shipping things that matter. My open-source work on design patterns has reached over 300 stars on GitHub, and I'm always building something new — whether it's an AI-native IDE or an interactive learning platform.
10+
Years Experience
4
Books Published
300+
GitHub Stars
Based inBerlin, Germany
RoleSenior Software Engineer
CompanyMonta
FocusBackend, Architecture, AI
LanguagesPortuguese (native), English (C2), German (basic)
02
Experience
Where I've worked and what I've built.
2022 — Present
Berlin, Germany
Senior Software Engineer
MontaCurrentBuilding scalable backend systems and distributed architectures for the EV charging platform. Working with microservices, cloud-native infrastructure, and cross-team engineering initiatives.
2020 — Present
Remote
Founder & Author
Dev WarlocksCurrentWriting about software architecture, backend engineering, and developer education. Published four books and built educational platforms like Neural Playground.
2014 — 2022
Brazil & Europe
Software Engineer
Previous RolesBuilt and maintained high-traffic backend systems across e-commerce, fintech, and SaaS industries. Progressed from junior developer to senior engineer and technical leader over 8 years.
2010 — 2014
Brazil
Electronics Technician
Aviation & ElectronicsBefore software, I worked with electronics — including maintenance and repair of avionics systems in airplanes and helicopters. A hands-on foundation that shaped how I think about systems and reliability.
03
Expertise
The technologies and practices I work with daily.
Backend
PHP/Go/Node.js/Python/REST APIs/GraphQL
Frameworks
Laravel/Symfony/React/Next.js/Tauri
DevOps & Cloud
Docker/Kubernetes/AWS/CI/CD/Terraform/GitHub Actions
Data & Messaging
PostgreSQL/MySQL/Redis/MongoDB/RabbitMQ/Kafka
Architecture
Microservices/Design Patterns/DDD/Clean Architecture/SOLID/Event Sourcing/Circuit Breaker
AI & Observability
AI Agents/LLM Integrations/PostHog/Langfuse/MatraAI/Rust/TypeScript
04
Selected Work
Open-source projects and tools I've built and maintain.
05
Publications
Books I've written on software engineering, knowledge management, and career development.
Amazon · 2026
English
Zettelkasten: How to Actually Learn in the Age of AI
A practical guide to the Zettelkasten note-taking method adapted for the modern era. Learn why AI summaries feel like learning but leave nothing behind, and how to build a system for lasting understanding.
View on Amazon
Amazon · 2025
English
The Complete Guide to Go Programming
From basics to advanced concurrency. A hands-on book covering Go fundamentals, concurrency patterns, and real-world application design for production-grade systems.
View on Amazon
Casa do Código · 2018
Português
Design Patterns com PHP 7
A practical guide to implementing creational, structural, and behavioral design patterns in PHP. Covers best practices, real problems, diagrams, and practical applications.
View on Casa do Código06
Journal
Recent releases, publications, and milestones.
MAR2026
BookPublished "Do Brasil para Berlim"
Released a 251-page guide for Brazilian developers wanting to work in Europe. Available on Amazon and Kindle Unlimited in both Portuguese and English.
MAR2026
BookPublished "Zettelkasten: How to Actually Learn in the Age of AI"
A 217-page book on the Zettelkasten method adapted for the AI era. Learn to build a note-taking system for lasting understanding.
MAR2026
ReleaseHermes IDE Goes Open Source
Made Hermes IDE fully open source — an AI-native terminal emulator with ghost-text completions, autonomous task execution, and full git management.
FEB2026
ReleaseLaunched Hermes IDE
Released Hermes IDE, an AI-powered shell built with Tauri, React, and Rust. Features multi-session management, git panel, and support for Claude, Gemini, Aider, and Codex.
JAN2026
ReleaseNeural Playground Launched
Shipped Neural Playground — an interactive platform for learning AI concepts through play and hands-on simulations.
OCT2025
BookPublished "The Complete Guide to Go Programming"
Released a hands-on book covering Go fundamentals, concurrency patterns, and building complex production-grade systems.
JUN2025
Milestonephp-design-patterns Hits 300 Stars
The PHP design patterns repository crossed 300 GitHub stars, becoming a widely-used reference for PHP developers learning design patterns.
07
Let's Connect
Interested in working together, discussing ideas, or just want to say hello?