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Alexsander Santana

Alexsander Santana

AI Training Specialist - Software Development & Data Engineering

BRAZIL flag
Rio de Janeiro, Brazil
Expert

Key Skills

Software

No software listed

Top Subject Matter

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Top Data Types

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Top Label Types

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Freelancer Overview

I am an AI training specialist and software developer with hands-on experience in data labeling, annotation, and evaluation for top-tier AI projects. My expertise includes Reinforcement Learning from Human Feedback (RLHF), prompt engineering, and supervised fine-tuning (SFT), where I create, review, and curate high-quality datasets to improve large language models. I am proficient in Python and Rust, frequently evaluating and debugging code generated by LLMs to ensure accuracy and safety. My work spans technical environments using Linux, Bash scripting, and tools like Git and Docker, and I have delivered "Gold Standard" data for AI companies through platforms such as Outlier.ai, Labelbox, and Appen. With a strong analytical background and experience in content review, localization, and data pipeline automation, I am committed to producing reliable, high-impact training data for NLP and code generation domains.

Expert

Labeling Experience

No Data Labeling experience added

Alexsander S. hasn’t added any AI Training or Data Labeling experience to their OpenTrain profile yet.

Education

U

Universidade Corporativa Petrobras

Professional Specialization, Subsea Engineering

Professional Specialization
2022 - 2023
F

Federal University of Itajubá

Bachelor of Science, Mechanical and Aeronautical Engineering

Bachelor of Science
2011 - 2016

Work History

P

Petrobras

Data Engineer & Automation Lead

Rio de Janeiro
2022 - Present
W

Welocalize

Content Reviewer & Localization Specialist

N/A
2021 - 2023