~ $ whoami
Gustavo Hammerschmidt
Backend, Systems, Web3 & Full-Stack Developer
Building robust, high-performance systems with Rust, AI, Python, React and Solidity.
Curitiba, Paraná, Brazil
available · @guhhammer
About Me
I'm a backend and systems developer specializing in efficient solutions. Proficient in Solidity, Rust, React, and more. I create custom dApps with a strong foundation in economics and code.
- Backend, Systems, Web3 & Full-Stack Developer
- Curitiba, Paraná, Brazil
- available
8+
years of experience
20+
projects completed
35+
technologies
Tech Stack
Technologies I work with daily
Software engineering that scales results
I transform complex challenges into high-performance digital solutions, combining strategic design and cutting-edge technology.
Web Development
Creation of high-performance websites, conversion-focused landing pages, and complex systems using the most modern technologies on the market.
SEO & Performance
Complete optimization so your company appears at the top of Google searches and loads in milliseconds.
UI/UX Design
User-centered design, ensuring an intuitive, modern, and professional experience on any device.
Security & Scalability
Robust architecture to support thousands of simultaneous accesses with state-of-the-art data security, using Rust and Cloud Computing.
Why Work With Me?
I combine technical precision with a focus on business results.
Clean Code
I write maintainable, scalable code using industry best practices like SOLID and Clean Architecture.
Efficiency
Time is money. I focus on high-performance solutions and meeting deadlines without compromising quality.
Communication
I keep you updated through every stage of development with clear, jargon-free communication.
Featured Projects
Some of my recent work
Vega Messenger
An encrypted messenger with no server. Peers find each other, carry each other's ciphertext, and hold each other's mail.
RustTypescriptTauriP2PServerlessØxygen
A private desktop chat app for local Ollama models.
RustTypescriptAIFerris
A Rust-Bevy Game
RustActixBevyWebAssemblyDecentralized Encrypted Messanger
A messanger model to encrypted communication over decentralized networks
RustTauri externalA DEX living on blockchain only
A DEX highly perfomative and backtested.
SolidityHardhat externalA Backtested DAO
A DAO backtested and refined for voting.
SolidityHardhat externalFrequently Asked Questions
What is your typical project timeline?
It varies by complexity. A standard landing page takes about 1-2 weeks, while a full-stack web application can take 4-8 weeks.
Do you work with international clients?
Yes! I work remotely with clients globally and communicate fluently in both English and Portuguese.
What technologies do you specialize in?
I specialize in React/Next.js for the frontend and Rust/Node.js for the backend. I always choose the best tool for the specific project needs.
What have you built?
Vega, an encrypted messenger with no server; Øxygen, a private desktop chat app for local Ollama models; Ferris, a Pac-Man clone in Rust that runs in the browser as WebAssembly; and this site, a single Rust binary. Each has a page here and its source on GitHub.
How can I contact you?
By e-mail at guhhammer@protonmail.com, or through any of the profiles on the links page. I'm based in Curitiba, Brazil, and work remotely.