J

Julia Fernandez

About

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Buenos Aires, Argentina

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Résumé


Jobs verified_user 0% verified
  • M
    Freelance Full-Stack Developer & Data Analyst
    Maestro Pilates
    Feb 2026 - Current (6 months)
    • Designed and built the Analytics module independently — tracking churn rate, survey response rate, and KPI trends from real client data. • Co-Built the client survey system: imports clients and class schedules, and generates class-specific surveys per client. • Co-Built the admin dashboard for managing survey responses, class changes, and client records.
  • M
    Data Annotator — Language Localization & Pin Evaluator
    Morpheus and Innodata
    Dec 2025 - Current (8 months)
    • Conduct language localization and content evaluation for AI training datasets. • Perform pin evaluation and classification tasks to improve model accuracy, applying detailed annotation guidelines.
  • Trustscale.ai
    AI Quality Evaluator & Data Annotator
    Trustscale.ai
    Oct 2025 - Current (10 months)
    • Evaluate AI-generated responses for factual accuracy, relevance, coherence, and safety alignment across 1,000+ tasks. • Classify prompts and responses using predefined taxonomies; audit peer annotations for quality control. • Validate factual claims against trusted sources, breaking down complex model outputs into structured assessments.
  • A
    Culinary Professional
    Argentina, Uruguay, Spain & Sweden
    Jan 2008 - Jan 2025 (17 years 1 month)
    International career in high-performance kitchens, including Michelin-star environments. Developed precision, structured documentation, and rigorous quality control — skills directly transferable to data analysis and structured data work.
Education verified_user 0% verified
  • D
    Data Science Bootcamp
    Desafío LATAM, Chile
    Jan 2025 - Jan 2026 (1 year 1 month)
  • Digital House
    Data Analyst Certificate
    Digital House
    Jan 2025
  • A
    Data Analysis with Excel / Power BI
    ADAMS Formación, Spain
    Jan 2025
  • S
    Technical Degree — Big Data & Machine Learning
    SEAS Universidad de Zaragoza
    Jan 2024
  • Instituto Argentino de Gastronomía
    Professional Chef Degree
    Instituto Argentino de Gastronomía
    Jan 2008 - Jan 2012 (4 years 1 month)
  • Universidad de Buenos Aires
    Biological Sciences (Incomplete)
    Universidad de Buenos Aires
    Jan 2005 - Jan 2009 (4 years 1 month)
  • S
    Bilingual High School Diploma (EN/ES)
    ST. PATRICK'S SCHOOL
    Jan 2004
Projects (professional or personal) verified_user 0% verified
  • H
    Inventory Management System
    Hotel Berns (Sweden)
    Feb 2026 - Current (6 months)
    Full-stack web app built for a real hotel client. Features monthly stock tracking, a KPI dashboard (total stock value, category breakdown), historical comparisons, Excel import/export, and a product catalog with bulk upload. (Live demo currently offline pending a database reseed — code and architecture are fully representative.) Stack: Next.js • TypeScript • Supabase (PostgreSQL) • Tailwind CSS • Chart.js • Vercel
  • M
    Studio Management & Analytics Dashboard
    Maestro Pilates
    Feb 2026 - Current (6 months)
    Freelance full-stack project for a real Pilates studio client (login-protected, screenshots in portfolio). Co-built the client survey system (client/class import, auto-generated per-client surveys) and the admin dashboard; designed and built the Analytics module independently — churn rate, response rate, and KPI trends. Stack: Next.js • TypeScript • Supabase (PostgreSQL) • Tailwind CSS
  • D
    Hospital Readmission Analysis
    Diabetes (US)
    Feb 2026 - Current (6 months)
    Exploratory analysis of 99,492 hospital records across 130 US hospitals to identify readmission patterns. Found key trends in age groups, insulin usage, and hospitalization duration. Stack: HTML • CSS • JavaScript • EDA • Data cleaning