Luceno D.

Key Skills

Software

Don't disclose

OneForma

Appen

Top Subject Matter

Gaming chat content moderation and toxicity/policy enforcement

Portuguese audio transcription review and quality control

AI model training and performance optimization

Top Data Types

Text

Audio

Document

Top Task Types

Classification

Transcription

Fine-tuning

Data Collection

Freelancer Overview

TaskUs — Content Annotation Specialist. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Don't disclose, OneForma, and Appen. Education includes High School Diploma, N/A (2007). AI-training focus includes data types such as Text and Audio and labeling workflows including Classification, Transcription, and Content Moderation.

Labeling Experience

TaskUs — Content Annotation Specialist

Don't discloseTextClassificationTranscription

Responsible for analyzing gaming chat messages and categorizing harmful or policy-violating content for AI moderation systems. Ensured accurate classification of toxic, abusive, and inappropriate messages according to moderation guidelines. Maintained consistency and high attention to detail while handling sensitive data. • Toxic and abusive message classification • Policy-violation detection in gaming chat • Quality and consistency checks for labeling • Support for AI moderation model inputs

2025 - Present

Processor — Audio Transcription Reviewer (Portuguese)

Don't discloseAudioTranscription

Reviewed and corrected transcribed Portuguese audio files to improve linguistic accuracy. Ensured outputs complied with client standards and transcription quality requirements. Focused on correcting errors to produce reliable text from audio recordings. • Portuguese transcription review and correction • Linguistic accuracy verification • Compliance with client transcription standards • Quality control for transcribed audio content

2025 - 2025

E2F — AI Training Specialist

Don't discloseTextFine-tuning

Worked on training and refining AI models through detailed analysis of performance. Contributed to improving model behavior based on observed results and iterative optimization. Supported AI development workflows by applying structured review to training outputs. • AI model training support • Performance optimization and refinement • Detailed analysis of model outputs • Iterative improvement contributions

2024 - 2024

OneForma — Data Annotation Projects

OneFormaTextData CollectionClassification

Contributed to data labeling for machine learning training datasets. Assisted in preparing labeled data needed to support model learning and downstream tasks. Performed labeling tasks in alignment with project instructions and dataset requirements. • Data labeling for ML training datasets • Following labeling guidelines and instructions • Preparing training-ready labeled data • Supporting dataset curation for AI

2022 - 2023

Data Entry Specialist - Appen

AppenAudioClassificationTranscription

Performed diverse data annotation and data entry tasks to support client data processing needs. Ensured work quality by following guidelines and maintaining accuracy across assigned tasks. Applied attention to detail and productivity discipline while working with structured data. • Completed data entry tasks with accuracy • Followed task guidelines and quality requirements • Supported client deliverables through labeled data work • Maintained consistent performance and attention to detail

2015 - 2016

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Education

Work History