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A

Alexander Acosta

AI Trainer (React & Next.js, Node.js)

Colombia flagRemote, Colombia
$45.00/hrIntermediateInternal Proprietary ToolingAws Sagemaker

Key Skills

Software

Internal/Proprietary Tooling
AWS SageMakerAWS SageMaker

Top Subject Matter

Frontend Web Development
React Domain Expertise
Next.js Domain Expertise

Top Data Types

TextText
Computer Code ProgrammingComputer Code Programming

Top Task Types

Evaluation Rating
Prompt Response Writing SFT
Computer Programming Coding

Freelancer Overview

AI Trainer (React & Next.js, Node.js). Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Professional Technologist in Software Development, CIAF (2024) and Professional Technician in Software Development, CIAF (2024). AI-training focus includes data types such as Computer Code and Programming and labeling workflows including Evaluation and Rating.

IntermediateEnglishSpanishPortuguese

Labeling Experience

AI Trainer (React & Next.js, Node.js)

As an AI Trainer, I evaluated and rated AI-generated responses and code for technical accuracy and clarity in React and Next.js. I designed prompts to enhance language model performance on frontend development topics. My work involved creating and validating technical test cases to support model improvement. • Evaluated AI model outputs for React, Next.js, and TypeScript accuracy. • Designed targeted prompts and reviewed generated code for adherence to best practices. • Created and validated test cases using React Testing Library and Jest. • Assessed and corrected model recommendations related to UI/UX and accessibility.

As an AI Trainer, I evaluated and rated AI-generated responses and code for technical accuracy and clarity in React and Next.js. I designed prompts to enhance language model performance on frontend development topics. My work involved creating and validating technical test cases to support model improvement. • Evaluated AI model outputs for React, Next.js, and TypeScript accuracy. • Designed targeted prompts and reviewed generated code for adherence to best practices. • Created and validated test cases using React Testing Library and Jest. • Assessed and corrected model recommendations related to UI/UX and accessibility.

2025 - Present

Education

P

Pontificia Universidad Javeriana

Diploma in DevOps, DevOps

Diploma in DevOps
2024 - 2024
C

CIAF

Professional Technologist in Software Development, Software Development

Professional Technologist in Software Development
2024 - 2024

Work History

R

Revelo

AI Labeler

Pereira
2025 - Present
A

Amdocs

Software Engineer / Frontend Engineer

Remote
2020 - 2024