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J

Juliana Costa

Freelancer

PORTUGAL flag
Porto, Portugal
$18.00/hrEntry Level

Key Skills

Software

No software listed

Top Subject Matter

Linguist
Data Quality Analyst
Translater

Top Data Types

TextText
DocumentDocument
Computer Code ProgrammingComputer Code Programming

Top Task Types

Classification
Text Generation
Question Answering
Transcription
Evaluation Rating
Prompt Response Writing SFT

Freelancer Overview

Content Moderator. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Arts, University of Porto (2023). AI-training focus includes data types such as Text and labeling workflows including Classification.

Entry LevelKoreanEnglishSpanishPortuguese

Labeling Experience

Freelancer

TextPrompt Response Writing SFT
Prompt Engineering & Automation System Prompt Development: Designed and optimized complex "Editorial Orchestration" instructions (XTM) to automate the transformation of long-form journalism into structured, multi-channel content kits. Workflow Optimization: Developed standardized input templates to ensure high-quality AI outputs, maintaining strict adherence to technical constraints and XML schemas. Translation & Linguistic Review AI-Driven Translation (EN/PT): Managed automated translation workflows, ensuring that stylistic nuances and professional terminology were preserved across both English and Portuguese versions. Professional Proofreading & Reviewing: Leveraged LLMs to perform high-level editorial reviews, correcting syntax and ensuring tone consistency in AI-generated reports and articles. Model Evaluation & QA Comparative Output Analysis: Conducted rigorous testing and evaluation of AI responses to verify technical accuracy, formatting reliability, and alignment with complex system instructions. Quality Assurance: Monitored AI performance to identify and resolve "hallucinations" or structural failures, ensuring all deliverables met enterprise-grade standards.

Prompt Engineering & Automation System Prompt Development: Designed and optimized complex "Editorial Orchestration" instructions (XTM) to automate the transformation of long-form journalism into structured, multi-channel content kits. Workflow Optimization: Developed standardized input templates to ensure high-quality AI outputs, maintaining strict adherence to technical constraints and XML schemas. Translation & Linguistic Review AI-Driven Translation (EN/PT): Managed automated translation workflows, ensuring that stylistic nuances and professional terminology were preserved across both English and Portuguese versions. Professional Proofreading & Reviewing: Leveraged LLMs to perform high-level editorial reviews, correcting syntax and ensuring tone consistency in AI-generated reports and articles. Model Evaluation & QA Comparative Output Analysis: Conducted rigorous testing and evaluation of AI responses to verify technical accuracy, formatting reliability, and alignment with complex system instructions. Quality Assurance: Monitored AI performance to identify and resolve "hallucinations" or structural failures, ensuring all deliverables met enterprise-grade standards.

2025 - Present

Content Moderator

TextClassification
As a Content Moderator, I reviewed and classified large volumes of textual content for quality, accuracy, and compliance. I ensured the consistent application of policies while maintaining high attention to detail in processing user-generated and internal content. My work contributed to a structured, rule-based environment with measurable outcomes for data quality. • Maintained high accuracy and compliance during textual data reviews. • Applied moderation policies and guidelines to diverse digital content. • Collaborated with internal quality teams to uphold standards. • Processed large content batches within set timeframes and KPIs.

As a Content Moderator, I reviewed and classified large volumes of textual content for quality, accuracy, and compliance. I ensured the consistent application of policies while maintaining high attention to detail in processing user-generated and internal content. My work contributed to a structured, rule-based environment with measurable outcomes for data quality. • Maintained high accuracy and compliance during textual data reviews. • Applied moderation policies and guidelines to diverse digital content. • Collaborated with internal quality teams to uphold standards. • Processed large content batches within set timeframes and KPIs.

2023 - 2025

Education

F

Faculdade de Letras da Universidade do Porto

Bachelor of Arts, Language Sciences (Linguistics)

Bachelor of Arts
2020 - 2023

Work History

C

Concentrix

Customer Service Representative

Porto
2025 - Present
C

Concentrix

Subject Matter Expert

Porto
2024 - 2025