Andrés D.

Hi! I'm Andrés, a tutor in mathematics, computer science, artificial intelligence, and office tools with 10+ years of teaching experience and 5+ years tutoring online. 🥇 Gold Medalist – Ecuadorian Mathematical Olympiad and 🥉 Bronze – Ibero-American Olympiad. 🎓 MSc candidate in Computational Mathematics at Universitat Jaume I (Spain), ⚡ Electrical Engineer, and Certified Software Developer. I've worked with students from 13+ countries (Spain, USA, UK, Germany, Italy, France, Argentina, Colombia, Peru, Uruguay, UAE, Australia, Ukraine) and from leading global universities such as ETH Zürich, UOC (Universitat Oberta de Catalunya) , and King's College London. 📚 Subjects I teach: 🔢 Mathematics — Calculus I–III, Multivariable Calculus, Linear Algebra, Differential Equations, Numerical Methods, Real Analysis, Pre-Calculus, Trigonometry, Algebra; 🏆 Math Olympiad Coaching — national and international preparation; 📊 Statistics & Probability — Descriptive and Inferential Statistics, Probability, Combinatorics, Data Mining (R, Excel, JMP, Python, SPSS); 💻 Computer Science & Programming — Python, Java, JavaScript, Bash, OOP, Data Structures and Algorithms, Databases (SQL), Theory of Computation, Automata, Graphs, Logic, Discrete Mathematics; 🤖 Artificial Intelligence & Machine Learning — I specialize in the mathematical foundations of AI (Linear Algebra, Probability, and Calculus applied to ML, core concepts like gradient descent and model evaluation); 📈 Financial Analysis — Financial Statement Analysis, quantitative methods; ⚙️ Applied Mathematics — Modeling, Optimization, Dynamical Systems (Mathematica, MATLAB, GeoGebra); 💼 Office Tools & Digital Productivity — Microsoft Office (advanced Excel, formulas, pivot tables, macros, Word, PowerPoint), Google Workspace (Sheets, Docs, Slides, Forms), productive use of ChatGPT and Claude for study and analysis, and Meta Business Suite for social media management and ads. ✅ Fully personalized lessons built around your syllabus, pace, and goals. ✅ Clear study plan for exams, assignments, or long-term learning. ✅ Real exercise practice using your own course materials. ✅ AI-friendly approach — I teach you to use AI as a learning tool, not a shortcut. ✅ Bilingual support — lessons in Spanish (native) or English (B2). In my free time I play guitar and work out. ⏰ Availability: 6:00 AM – 8:00 PM PST. 📩 Got an exam, assignment, or subject you're stuck on? Message me with the topic and your deadline — I respond within hours, and together we'll build a plan to get you across the finish line.