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Andrés Quintero

Andrés Quintero

STEM AI Evaluator | RLHF & Mathematics Response Ranking | Electronics & CS Dual-Degree

Colombia flagManizales, Colombia
$35.00/hrEntry LevelScale AISurge AI

Key Skills

Software

Scale AIScale AI
Surge AISurge AI

Top Subject Matter

Mathematics Domain Expertise
Stem Domain Expertise
Technical Translation

Top Data Types

TextText

Top Task Types

RLHFRLHF
Evaluation/RatingEvaluation/Rating
Question AnsweringQuestion Answering
Text GenerationText Generation
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Freelancer Overview

STEM-focused engineering student pursuing a dual-degree program in Electronics Engineering and Computer Science at Universidad Nacional de Colombia, after an admission ranked in the top percentile of the national entrance exam. Combines a rigorous foundation in mathematics, physics, circuits, and signals with hands-on experience in embedded systems firmware (C/C++ for ESP32 and STM32), Python programming, algorithmic problem solving, and signal-driven hardware integration. Native Spanish (LATAM) speaker with B2-certified English proficiency, combining strong technical writing with the ability to translate, evaluate, and explain complex STEM content across both languages. Experienced as an academic mathematics tutor in calculus, linear algebra, trigonometry, and mathematical logic, with a track record of decomposing dense theoretical problems into clear, step-by-step reasoning. Seeking to apply this combination of electronics expertise, quantitative rigor, programming skill, and bilingual technical communication to AI training, LLM evaluation, RLHF, and STEM content review projects.

Entry LevelEnglishSpanish

Labeling Experience

RLHF Response Evaluation – STEM & Mathematics (BlackBeard / Outlier)

TextRLHF
Evaluated and ranked AI-generated responses for a large-scale RLHF training project (BlackBeard) on the Outlier platform, specializing in STEM domains including mathematics (calculus, linear algebra, discrete math), physics, electronics, and engineering. Assessed response pairs across five structured dimensions: Instruction Following, Truthfulness, Verbosity, Prompt Correctness, and Writing Style & Tone. Applied Likert-scale preference rankings with evidence-based written justifications, following strict editorial and naming conventions defined by the project's style guide. Evaluated multimodal tasks combining text and image prompts as part of the project's most recent update. Consistently audited LaTeX syntax accuracy, distinguishing model errors from platform rendering bugs per official guidelines.

Evaluated and ranked AI-generated responses for a large-scale RLHF training project (BlackBeard) on the Outlier platform, specializing in STEM domains including mathematics (calculus, linear algebra, discrete math), physics, electronics, and engineering. Assessed response pairs across five structured dimensions: Instruction Following, Truthfulness, Verbosity, Prompt Correctness, and Writing Style & Tone. Applied Likert-scale preference rankings with evidence-based written justifications, following strict editorial and naming conventions defined by the project's style guide. Evaluated multimodal tasks combining text and image prompts as part of the project's most recent update. Consistently audited LaTeX syntax accuracy, distinguishing model errors from platform rendering bugs per official guidelines.

2026 - Present

Mathematical LaTeX Correction & Notation Standardization

TextText Generation
Identified and corrected malformed LaTeX expressions, non-standard mathematical notation, and broken markdown structure in AI-generated STEM responses. Applied KaTeX compatibility standards (dollar-sign delimiters, standard command set) to ensure correct rendering. Flagged and removed random tokens, language switches, and formatting artifacts, produced clean, publication-ready rewritten responses suitable for fine-tuning datasets.

Identified and corrected malformed LaTeX expressions, non-standard mathematical notation, and broken markdown structure in AI-generated STEM responses. Applied KaTeX compatibility standards (dollar-sign delimiters, standard command set) to ensure correct rendering. Flagged and removed random tokens, language switches, and formatting artifacts, produced clean, publication-ready rewritten responses suitable for fine-tuning datasets.

2025 - Present

AI Response Quality Evaluation – Comparative Annotation (Outlier / BlackBeard)

TextEvaluation Rating
Performed side-by-side comparative evaluation of AI model response pairs within the BlackBeard RLHF pipeline. Scored each response independently across five quality dimensions and produced a final Likert preference ranking (7-point scale) with detailed written justification. Maintained strict consistency standards: uniform criteria across both responses, no AI-assisted evaluation, adherence to naming conventions, and avoidance of linter-flagged contradictions in justification language. Tasks spanned diverse domains, including advanced mathematics, physics, engineering, finance, legal, and healthcare.

Performed side-by-side comparative evaluation of AI model response pairs within the BlackBeard RLHF pipeline. Scored each response independently across five quality dimensions and produced a final Likert preference ranking (7-point scale) with detailed written justification. Maintained strict consistency standards: uniform criteria across both responses, no AI-assisted evaluation, adherence to naming conventions, and avoidance of linter-flagged contradictions in justification language. Tasks spanned diverse domains, including advanced mathematics, physics, engineering, finance, legal, and healthcare.

2025 - Present

Education

B

BNC Colombo Americano

Certificate, English Language

Certificate
2018 - 2018
U

Universidad Nacional de Colombia

Bachelor of Science, Electronics Engineering and Computer Science

Bachelor of Science
2018

Work History

U

Universidad Nacional de Colombia

Embedded Systems & Electronics Developer

Manizales
2022 - Present
U

Universidad Nacional de Colombia

Academic Mathematics Tutor

Manizales
2021 - 2022