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Fernando

Fernando

Senior AI Training Specialist | Full-Stack Coder | Quality Auditor

Venezuela flagValencia, Venezuela
$25.00/hrExpertAppenClickworkerCrowdflower

Key Skills

Software

AppenAppen
ClickworkerClickworker
CrowdFlowerCrowdFlower
Figure EightFigure Eight
MercorMercor
OneFormaOneForma
RemotasksRemotasks
Scale AIScale AI
TolokaToloka
Other
Internal/Proprietary Tooling

Top Subject Matter

Software Development - AI Model Training & Code Optimization
E-commerce - Retail Image Mapping & Data Auditing
Linguistics - Multilingual NLP & Entity Recognition

Top Data Types

Computer Code ProgrammingComputer Code Programming
ImageImage
TextText

Top Task Types

Bounding BoxBounding Box
PolygonPolygon
SegmentationSegmentation
ClassificationClassification
Entity (NER) ClassificationEntity (NER) Classification
Text GenerationText Generation
Question AnsweringQuestion Answering
Text SummarizationText Summarization
RLHFRLHF
TranscriptionTranscription
Evaluation/RatingEvaluation/Rating
Computer Programming/CodingComputer Programming/Coding
Data CollectionData Collection
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Freelancer Overview

I am a dedicated data specialist with extensive experience in data labeling, annotation, and quality auditing for AI training data projects. My background includes working with leading platforms like Woflow, Clickworker, Remotasks, Appen, and Figure Eight, where I have contributed to tasks such as image mapping, translation, and data specialization across diverse domains including computer vision and natural language processing. I am skilled in optimizing data workflows, conducting performance audits, and generating quality reports to ensure high standards. My technical expertise includes HTML, CSS, JavaScript, JSON, and web process automation, complemented by strong communication, teamwork, and problem-solving abilities. I am passionate about delivering accurate, high-quality data and continually seek innovative ways to improve processes and outcomes in dynamic environments.

ExpertEnglishSpanishItalian

Labeling Experience

AI Training Specialist - Computer Programming

Computer Code ProgrammingComputer Programming Coding
Developed, debugged, and optimized code snippets to train large language models (LLMs) in multiple programming languages. Performed Reinforcement Learning from Human Feedback (RLHF) and Prompt Response Writing (SFT) to improve the accuracy and efficiency of AI-generated code.

Developed, debugged, and optimized code snippets to train large language models (LLMs) in multiple programming languages. Performed Reinforcement Learning from Human Feedback (RLHF) and Prompt Response Writing (SFT) to improve the accuracy and efficiency of AI-generated code.

2026 - Present

Quality Auditor & Image Mapping Specialist

ImageClassification
Performed high-precision retail image mapping and data annotation for large-scale inventory datasets. Conducted rigorous task audits and performance file analysis to ensure 100% data integrity and model accuracy. Generated comprehensive quality reports and developed internal optimization tools to streamline the labeling workflow.

Performed high-precision retail image mapping and data annotation for large-scale inventory datasets. Conducted rigorous task audits and performance file analysis to ensure 100% data integrity and model accuracy. Generated comprehensive quality reports and developed internal optimization tools to streamline the labeling workflow.

2024 - 2026

Senior Multimedia Data Annotator

VideoBounding Box
Executed complex video and image annotation projects using Bounding Boxes, Polygons, and Segmentation techniques. Managed large datasets for object detection and tracking, ensuring high-quality ground truth data for computer vision models.

Executed complex video and image annotation projects using Bounding Boxes, Polygons, and Segmentation techniques. Managed large datasets for object detection and tracking, ensuring high-quality ground truth data for computer vision models.

2020 - 2023

Senior Data Specialist & Automation Developer

DocumentEvaluation Rating
Managed diverse data labeling projects focusing on document classification and search relevance evaluation. Utilized technical skills in JSON and DOM manipulation to assist in data extraction and structured labeling tasks. Applied web process automation techniques to increase throughput while maintaining strict adherence to quality guidelines.

Managed diverse data labeling projects focusing on document classification and search relevance evaluation. Utilized technical skills in JSON and DOM manipulation to assist in data extraction and structured labeling tasks. Applied web process automation techniques to increase throughput while maintaining strict adherence to quality guidelines.

2019 - 2023

Linguistic Data Specialist & Transcriptionist

AudioTranscription
Provided high-quality transcriptions and audio data labeling for speech recognition models. Conducted Question Answering (QA), Text Summarization, and Evaluation Rating tasks to refine model responses and linguistic understanding.

Provided high-quality transcriptions and audio data labeling for speech recognition models. Conducted Question Answering (QA), Text Summarization, and Evaluation Rating tasks to refine model responses and linguistic understanding.

2018 - 2022

Education

U

Universidad Nacional Abierta (UNA)

Bachelor of Science, Industrial Engineering

Bachelor of Science
2000 - 2005

Work History

W

Woflow

Quality Auditor

Valencia
2025 - Present
W

Woflow

Image Mapping Specialist

Valencia
2024 - 2025