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Guilherme S.

Guilherme S.

AI Data Annotator & Technical Programmer

Portugal flagPorto, Portugal

Key Skills

Software

No software listed

Top Subject Matter

My strongest subject matter areas are Software Development
Artificial Intelligence
with specific expertise in integrating LLMs
prompt engineering
structured text generation. Additionally

Top Data Types

TextText
Computer Code ProgrammingComputer Code Programming
DocumentDocument

Top Task Types

Computer Programming/CodingComputer Programming/Coding
Text GenerationText Generation
Question AnsweringQuestion Answering
Data CollectionData Collection
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Evaluation/RatingEvaluation/Rating

Freelancer Overview

I have hands-on experience in AI integration, prompt engineering, and structured data management. In my latest full-stack project, a tabletop RPG campaign manager, I integrated the Google Gemini API to generate dynamic content such as custom NPCs, storylines, and contextual rules. My role involved designing and optimizing advanced prompts to ensure the AI's outputs strictly adhered to complex game logic, system balancing, and specific formatting requirements, directly focusing on output quality assurance. Additionally, I have strong experience in data modeling and labeling using NoSQL databases (Firestore). I was responsible for mapping, categorizing, and synchronizing real-time game states, item databases, and character attributes, ensuring absolute data consistency. This combination of domain-specific prompt engineering and structured data curating gives me a solid foundation to accurately evaluate, label, and train AI models.

Labeling Experience

Yes, please add my experience

Yes, please add my experience. As detailed in my project summary, I have practical experience in data structuring, data modeling, and prompt engineering through building full-stack AI-integrated applications. I have hands-on experience labeling and managing complex real-time data structures, as well as refining AI outputs to meet strict logical requirements.

Not specified

Education

P

Please list me as Self-Taught / Autodidact

Degree not specified

Not specified
Not specified

Work History

C

Company not specified

Please add the following relevant experience to my profile: 1

Location not specified
2025