Software Engineer · Lajeado, Brazil

Rogiel
Sulzbach

Systems-level engineer crafting high-performance software — from C++ game engines and network protocols to cloud infrastructure and DevOps at scale.

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01

About

I'm a software engineer with deep expertise in C++, systems programming, and cloud infrastructure. My work spans from building game engines and binary protocol parsers to designing scalable deployments with Docker, Kubernetes, and Cloudflare.

I enjoy tackling challenges at the intersection of performance and architecture — whether that's optimizing virtualization setups, implementing diff algorithms for game engine serialization, or building robust API integrations.

When I'm not writing code, I'm exploring emerging hardware technologies, researching high-performance computing configurations, and contributing to open-source projects.

47

Repositories

10+

Years Coding

6+

Languages

23

GitHub Followers

02

Expertise

C++ C++14/17/20 Docker Kubernetes Java PHP Swift Objective-C TypeScript Node.js ASIO Networking Game Engines AWS Cloudflare Proxmox Traefik Express.js CUDA Virtualization Linux Binary Protocols DevOps Cloud Infrastructure

03

Projects

SaaS · AI · WhatsApp

AI customer service on WhatsApp for Brazilian small businesses — scheduling, product catalogs and Pix payments handled 24/7 by a conversational agent that hands off to human staff when a case needs one.

vumi.com.br WhatsApp Cloud API

Data Platform · Real Estate

Vale Imobiliário

Aggregates every property listing across Lajeado and the Vale do Taquari into a single index, keeping the full price history of each one and alerting buyers the moment a price drops.

valeimobiliario.com.br 20+ agencies · daily price history

C++ · Header-Only Library

A C++14 header-only library designed for blazing fast processing of binary network packets. Built with zero-copy design and minimal allocations for real-time network applications.

template<typename T> class PacketBuffer { const char* data_; size_t size_; public: template<typename V> V read() { V val; std::memcpy(&val, data_, sizeof(V)); data_ += sizeof(V); return val; } };

A complete rewrite of the Lineage 2 game server emulator with Interlude support. Full game server architecture from scratch.

C++ · Game Engine

A custom C++ game engine built from the ground up, exploring rendering pipelines, ECS architecture, and real-time simulation systems.

Java · C++ · Tooling

Automatic bridge generator from C++ to Java, Objective-C and C#. Cross-language interop tooling for native code integration.

A PHP 5.5+ library that parses StarCraft II replay files into a rich, object-oriented data graph for analysis and tooling.

Let's build
something great

Interested in collaborating or have a project in mind? Let's connect.

[email protected] GitHub