Cristian César Martins

Computer Science undergraduate at UFSCar (expected Dec 2026) with hands-on experience in software development, applied AI, and Natural Language Processing. Worked on end-to-end systems involving data collection, preprocessing, model integration, and production-ready outputs, including NLP pipelines, automation tools, and published digital products. Currently seeking a Technology internship in Software Development, Data Science, or Applied AI, with strong interest in building scalable and impactful systems.

Game Developer

Game Art Music Software (GAMSo) | Jun 2021 - 2025

• Designed, developed, and shipped three complete games as part of a long-running university extension project.
• Implemented core gameplay systems, software architecture, and AI behaviors, ensuring maintainability and scalability across projects.
• Published and maintained released games on itch.io, periodically delivering and iterating public-facing builds.

Skills: Unity, C#, Game Development, Game Architecture, AI Programming, Git, Agile Development, Scrum, Extreme Programming (XP)

NLP Developer
Karlbrüder Historical Fencing | Jul 2022 – Present

• Led a Natural Language Processing (NLP) project focused on translating medieval texts into Portuguese, with 41,790 paragraphs translated from 7 manuscripts
• Designed and developed a translation system using GPT-4 Mini, applied to historical texts with multiple linguistic variations
• Implemented web scraping pipelines to automatically collect medieval books from a specialized wiki
• Performed text pre-processing, including data cleaning, normalization, and segmentation
• Built a multilingual parallel corpus, aligning different language versions of the same texts
• Executed the automated translation process and validated translation outputs
  Organized and consolidated the final translated corpus, structured for future analysis and reuse

Skills: Python, Pandas, NumPy, NLTK, Natural Language Processing (NLP), Web Scraping, BeautifulSoup, Data Preprocessing, Matplotlib, Seaborn

Freelance Developer – Automation & Applied AI
Freelancer | May 2025 – Nov 2025

• Developed a corporate application using Google AppSheet (no code platform) for occupational health and safety record management
• Implemented an automated pipeline to analyze worker interview audio recordings
• Developed integration between Google products AppSheet, App Script and Gemini API, converting audio to text, extracting and load data into AppSheet automatically on upload, using a structured format
• Automated the generation of PDF reports, consolidating analyses and workplace safety records

Skills: Google AppSheet, Google Apps Script, API Integration, Google Gemini APIs, Speech-to-Text, Process Automation, Report Generation

Bachelor of Computer Science

Federal University of São Carlos (UFSCar – DC) | 2021 – present