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Nikolaos Vasilakis

Nikolaos Vasilakis

AI Evaluation & Reasoning Specialist - Technology & Internet

GREECE flag
KATERINI, Greece
$30.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

No subject matter listed

Top Data Types

TextText

Top Label Types

RLHF
Evaluation Rating
Prompt Response Writing SFT

Freelancer Overview

I am an analytical and detail-oriented AI evaluation specialist with hands-on experience in content evaluation, structured reasoning feedback, and prompt optimization for large language models. My daily work involves assessing and comparing AI-generated outputs, ensuring clarity, accuracy, and consistency across multiple domains. I am highly familiar with industry-leading AI tools such as OpenAI (ChatGPT), Anthropic, and Perplexity AI, and I excel at providing language quality assurance and structured feedback in remote, asynchronous environments. With a strong background in research, multi-domain analysis, and following detailed guidelines, I am committed to delivering high-quality data annotation and evaluation for AI training projects. My fluency in both Greek and English, along with my proven ability to work autonomously, enables me to contribute effectively to diverse and international teams.

IntermediateEnglishGreek Modern

Labeling Experience

AI Content Evaluation & RLHF Prompt Rating

OtherTextRLHFEvaluation Rating
Evaluated AI-generated responses across multiple domains for clarity, reasoning depth, factual correctness, instruction following, and language quality. Performed pairwise comparisons, ranking and structured feedback for improvement of model outputs. Tasks included prompt testing, summarization, question answering, and rewriting for higher quality responses. Worked in asynchronous remote workflows, applying detailed guidelines and consistency standards for RLHF-style evaluation.

Evaluated AI-generated responses across multiple domains for clarity, reasoning depth, factual correctness, instruction following, and language quality. Performed pairwise comparisons, ranking and structured feedback for improvement of model outputs. Tasks included prompt testing, summarization, question answering, and rewriting for higher quality responses. Worked in asynchronous remote workflows, applying detailed guidelines and consistency standards for RLHF-style evaluation.

2023

Education

I

Independent Studies

Non-Degree, Business, Maritime Operations, and Applied Research

Non-Degree
2017 - 2022

Work History

T

TritonZero1

Business Project Consultant

Remote
2023 - Present
S

Self-Employed

Maritime and Business Consultant

Remote
2017 - 2022