About André Marques | Contra André Marques

André Marques

André Marques

AI/ML Automation Engineer, NLP Specialist

Ready for work

André is ready for their next project!

Brasília - Brasilia, Brazil

Work Services About

Brasília - Brasilia, Brazil

Meet André

AI/ML engineer with 6 years experience.

- Machine Learning & Data Science
EDA and Data Analysis, Reinforce Learning & Model Fine-Tuning(Ensemble Methods, Time Series Analysis)
- Natural Language Process
Fine-Tuning LLM, LangChain, RAG, LLaMA, BERT, OpenAI API, Prompt Engineering
- Chatbot and AI Agent
Voice Chatbot, Make.com, N8N, Zapier
- Fullstack development
- Cloud & DevOps

Identity verifiedVetted for secure and trusted collaboration.

Featured on

Best Portuguese-speaking freelance ML Engineers to hire in 2026 Best Portuguese-speaking freelance AI Chatbot Developers to hire in 2026 Best Portuguese-speaking TensorFlow freelancers to hire in 2026

Rate

$25 - $50/hr

Skills and tools

AI Developer ML Engineer AI Model Developer AI Chatbot Developer Fullstack Engineer Virtual Assistant

Details

Brasília - Brasilia, Brazil

Fluent in Portuguese and English

Join 50k+ companies and 1M+ independents

For independents

Contra Pro Manage freelance projects Get verified as an expert Find jobs Get discovered Sign contracts Send invoices Commission-free payments

For companies

For companies Manage team projects Share hiring workspace Post jobs Discover contractors Sign contracts Approve invoices Global payments & tax compliance

Use Cases

For companies For freelancers For creator tools For agencies For VCs

Resources

Partner networks Advertising Hackathons Creative Human Data Human Creativity Benchmark Human in the loop API Project-based hiring calculator Guide to flexible hiring Guide for agencies Creator tools awards Customer stories Blog FAQs for freelancers FAQs for companies Referrals

Hire Freelancers

Explore all Top independents Design Engineering Marketing Music & audio Social media Video & animation Product Business consulting & HR Other

Company

Mission Careers Terms & conditions Privacy policy Cookie policy

Contact

Contact support

For independents

Contra Pro Manage freelance projects Get verified as an expert Find jobs Get discovered Sign contracts Send invoices Commission-free payments

For companies

For companies Manage team projects Share hiring workspace Post jobs Discover contractors Sign contracts Approve invoices Global payments & tax compliance

Use Cases

For companies For freelancers For creator tools For agencies For VCs

Resources

Partner networks Advertising Hackathons Creative Human Data Human Creativity Benchmark Human in the loop API Project-based hiring calculator Guide to flexible hiring Guide for agencies Creator tools awards Customer stories Blog FAQs for freelancers FAQs for companies Referrals

Hire Freelancers

Explore all Top independents Design Engineering Marketing Music & audio Social media Video & animation Product Business consulting & HR Other

Contact

Contact support

Company

Mission Careers Terms & conditions Privacy policy Cookie policy

© 2025 Contra.Work Inc