Sius Presda

Machine Learning Engineer

Freelancer.com • Freiberufler

Mar 2025 - Present • 1 yr 4 mos

Freelance Machine Learning Engineer & Data Analyst 2025 – Present As a Freelance Machine Learning Engineer and Data Analyst, I have successfully completed 50+ Machine Learning and Data Analytics projects, for academic, research, and business clients. My work covers the entire data science workflow, from data cleaning, preprocessing, and exploratory data analysis (EDA) to feature engineering, model development, evaluation, and visualization. I have built machine learning solutions for classification, regression, clustering, and predictive analytics using algorithms such as Random Forest, Decision Tree, K-Nearest Neighbors (KNN), Naive Bayes, Support Vector Machine (SVM), Logistic Regression, Linear Regression, XGBoost, K-Means, and Hierarchical Clustering. I also perform hyperparameter tuning, cross-validation, feature importance analysis, and model optimization to improve predictive performance. My technical expertise includes Python, Google Colab, Jupyter Notebook, Pandas, NumPy, Scikit-learn, Matplotlib, Seaborn, SQL, and R. In addition, I create interactive dashboards and professional data visualizations using Power BI and Looker Studio, enabling clients to better understand their data and make informed decisions. Throughout every project, I focus on delivering clean, well-documented code, reliable machine learning models, and actionable insights tailored to each client's objectives. I am committed to clear communication, timely delivery, and providing high-quality solutions that meet both technical and business requirements.