Marianna Valente
Data Quality Analyst
About
Marianna Valente is a Data Quality Analyst focused on creating high-quality software solutions and delivering real business value. With 9 years of experience in the Information Technology industry, she specializes in data analysis and quality assurance. She is passionate about continuous improvement and solving complex challenges through clean, scalable, and maintainable code. She seeks opportunities to leverage her expertise in data integrity and software development to drive impactful business outcomes.
Experience
Data Quality Analyst
Oct 2025 – Present · 11 mosInvolves · Remote
- Automated data pipeline consolidation, gaining 35% efficiency in quality report generation.
- Developed internal audit tools, reducing rework by 75% for over 50,000 daily records.
- Optimized PostgreSQL queries and created cleaning scripts, mitigating data entry errors by 20%.
Language Teacher
Nov 2024 – Present · 1 yr 10 mosOutlier (Scale AI)
- Refined NLP models for linguistic and logical accuracy of generative models.
- Integrated Generative AI and GitHub Copilot to speed up code delivery and bug resolution.
Training Specialist
Mar 2025 – Aug 2026 · 1 yr 5 mosAligneRR
- Evaluated and refined LLM accuracy for technical responses and ethical alignment.
- Collaborated on fine-tuning prompts to optimize generative model performance.
IT Analyst
Jul 2025 – Oct 2025 · 3 mosMercado Livre · Remote
Automation Manager
Jun 2025 – Aug 2025 · 2 mosWorkana · São Paulo, Brazil
- Developed automation systems tailored to company operations.
- Created custom workflows and managed databases (SQL, NoSQL, Excel).
- Deployed Docker environments with N8N and similar tools.
Skills
DevOps & Cloud
Software Development
Data Analysis & Quality
Business & Customer Relations
Project Management & Methodologies
Languages
Education & Certifications
C# Program in Computer Programming - Specific Applications
Ada Tech · 2024
C# Course in Computer Science
Ada Tech · 2023
Postgraduate Degree in Data Science
Centro Universitário IBMR · 2023
Bachelor's Degree in Computer Science
Universidade do Estado do Rio de Janeiro · 2019
Bachelor's Degree in Computer Systems Analysis
UNIASSELVI · 2028