Full Stack & AI Developer building web apps, games, and deployable models.
I’m Guilherme Keller, a developer from Guabiruba, Brazil, working across React, Node.js, Python, PyTorch, Transformers, Unity, Unreal, and open-source AI model publishing.
Guilherme Keller De Souza
Full Stack · AI · Game Development
MODEL PIPELINE
Visual systems
Interfaces, models, games
Executive Summary
AI-first engineering with production range.
Profile
Full Stack and Artificial Intelligence Developer
Diverse experience building web apps, games, and cutting-edge AI models including LLMs and VLMs. International freelance work, active open-source AI contributions, and leadership on a successful Steam game launch.
Core Stack
Programming Languages
AI / Deep Learning
Web & Databases
Game Development
Tools & Methodologies
Professional Experience
From AI model work to shipped games.
Developer
EVOPLAN (RNX)
- Worked on software development projects in an on-site environment, contributing to the company's solutions.
- Applied programming technologies to create and maintain features across various systems.
AI Developer · Freelance
Natura Umana
- Developed and fine-tuned Artificial Intelligence models, including LLMs and VLMs, using Python and frameworks such as PyTorch and Transformers.
- Collaborated remotely with an international team based in Switzerland to deliver robust AI solutions.
- Implemented data pipelines to train and evaluate machine learning models.
- Deployed models to production environments on Linux instances.
Debugging Team Member
Subliminal
- Identify, analyze, and document bugs and software flaws as a core part of the game's debugging team.
- Collaborate closely with the development team to ensure the high quality and stability of the final product.
Open Source Contributor · AI Developer
Team Mradermacher
- Actively contribute to the open-source community, specializing in the quantization and publication of AI models.
- Collaborate with a distributed team to optimize language models, making them accessible to a wider audience.
Lead Developer
Backrooms: Last Room
- Led the game development team from the conceptual phase to a successful launch on the Steam platform.
- Defined project architecture, managed task distribution, and programmed core game mechanics using C++ and Blueprints.
Education & languages
Bachelor’s Degree
Information Systems
Expected graduation. Formal higher education foundation across systems, software engineering, and applied computing.
Technical Education
IT Technician
Integrated technical high school program focused on computing fundamentals, software, and practical IT skills.
Languages
Portuguese & English
Portuguese: native / fluent. English: fluent, with experience collaborating in international remote environments.
Let’s build something reliable, useful, and technically sharp.
Available for stable full-stack, AI, and software engineering opportunities. Based in Brazil and comfortable collaborating with remote international teams.