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Milena Vieira

Milena Vieira

QA Analyst | TikTok

Brazil flagSão Paulo, Brazil
$10.00/hrIntermediateLabelboxScale AI

Key Skills

Software

LabelboxLabelbox
Scale AIScale AI

Top Subject Matter

Social Media Content Moderation
AI Response Evaluation
CX | CS

Top Data Types

TextText
DocumentDocument

Top Task Types

RLHF
Evaluation Rating

Freelancer Overview

QA Analyst 13 TikTok. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Technologist in Business Processes, UNIVESP (2025). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

IntermediateEnglishSpanish

Labeling Experience

QA Analyst | Tik Tok

TextEvaluation Rating
As a QA Analyst at TikTok, I evaluated and classified large volumes of text content to ensure compliance with strict content guidelines. My work required structured feedback and consistent application of predefined rubrics. I regularly engaged in AI response evaluation using reinforcement learning from human feedback (RLHF) methodologies. - Ensured data quality through meticulous review processes - Adhered closely to annotation guidelines and standards - Provided detailed written justifications for ratings and evaluations - Focused on comparative analysis of AI-generated content

As a QA Analyst at TikTok, I evaluated and classified large volumes of text content to ensure compliance with strict content guidelines. My work required structured feedback and consistent application of predefined rubrics. I regularly engaged in AI response evaluation using reinforcement learning from human feedback (RLHF) methodologies. - Ensured data quality through meticulous review processes - Adhered closely to annotation guidelines and standards - Provided detailed written justifications for ratings and evaluations - Focused on comparative analysis of AI-generated content

2025 - Present

Education

U

UNIP

Bachelor, Languages Translation (Eng/Port)

Bachelor
2018 - 2021
U

UNIVESP

Technologist in Business Processes, Business Processes

Technologist in Business Processes
2025

Work History

T

TikTok (

QA Analyst

Location not specified
2025 - Present