Hire the Best Data Scientists
in the United States

A dynamic Senior Biostatistician and Data Scientist seeks to bring an accomplished combination of education and experience to an industry-leading employer. 15+ years of experience in related data analysis, computer programming, and instruction roles for distinguished universities. Ph.D. in Biostatistics, with an M.S. in both Bio-Engineering and Applied Mathematics. Proficient in data management, mathematical modeling, grad/undergrad instruction, longitudinal/statistical analysis, project management, and more. Diligent and goal-oriented, with the skills, education, and hands-on experience needed to make an immediate impact as part of any fast-paced team.

Top 1% Expert-Vetted Freelancer. I have a PhD in Computer Science (AI & Machine Learning) and I am a physician. I build custom AI systems with proprietary and public data, including creation of novel datasets and state-of-the-art models. * After a 30-minute to 1-hour initial meeting, I'll craft a clearly written report outlining a unique AI strategy for your project. * For long-term engagements, I implement AI solutions end-to-end, including data collection, data cleaning, novel model design, model implementation and training in Python, and iteration on the modeling and data strategy to achieve excellent performance. * One of my specialties is creating custom models for proprietary datasets, including images, videos, audio recordings, and domain-specific data. Book a 30-minute consultation with me to get immediate answers about your AI project: - How can you leverage AI in your organization? - What kind of AI do you need to solve a particular problem? - Should you use a model like ChatGPT/Claude or do you need a custom model? - What modeling strategy should you use? - How should you collect and annotate data? - How much data will you need? - How should you measure performance? After a consultation I’ll craft a clearly-written report outlining an AI strategy for your project. Specialties: Healthcare AI: I am an expert in healthcare AI, with a unique background that blends clinical understanding from my MD, deep technical expertise from my AI PhD, and business experience. I have completed 100+ engagements across medical specialties including radiology, plastic surgery, orthopedic surgery, dermatology, cardiology, mental health, family medicine, dentistry, physical therapy, women’s health, pediatrics, nutrition, and neurology. I have created datasets and custom models for diverse forms of biomedical data including x-rays, CTs, MRIs, clinical photographs, patient videos, medical audio, medical notes, EHR data, insurance claims, omics data, and more. Computer Vision: I create custom AI models for 2D images, 3D images, and videos on proprietary datasets. I am excited about projects from multiple industries including healthcare, manufacturing, automotive, and agriculture. I have extensive experience with classification, object detection, segmentation, and keypoint detection, to identify and localize abnormalities or features of interest. I developed the first machine learning model in the world to predict multiple abnormalities simultaneously from a CT scan. For a dermatology practice, I built the first CV model to predict Fitzpatrick skin type, pigmentation, redness, and wrinkle severity (mean accuracy 85%)—now a core model at Kesty AI. Artificial Intelligence R&D: I have led multiple AI research projects across industry and academia. I have developed novel AI methods, including HiResCAM, a convolutional neural network explanation method with mathematical guarantees. I have published original research across multiple areas of AI, including computer vision, natural language processing, explainable AI, expert systems, and applied AI. My research papers have been cited over 1,000 times. My healthcare AI blog Glass Box has over 700,000 readers from 185 countries. Natural Language Processing (NLP): I have a deep understanding of large language models (LLMs) like Claude, Gemini, ChatGPT, and Llama. I have leveraged Transformers and other NLP techniques for numerous applications, including customized chatbots, medical note generation, and structured information extraction. Advising Entrepreneurs: Before focusing on AI consulting, I spent seven years as the founder of a health AI startup. I led my previous company from concept to deployed B2B SaaS product serving medical practices. Our AI history-taking assistant and AI scribe saved clinicians 2+ hours daily. I managed engineering teams of 5-10 (60+ contributors), secured two U.S. patents, and raised competitive grant funding. I enjoy working with entrepreneurs and discussing pitch decks, fundraising, customer discovery, designing an MVP, and evaluating the ROI of an AI product. If you’d like to talk with me about your AI project, please feel free to send me a message or book a consultation using the link on my profile.

I'm a Senior Data Scientist who has worked on a range of AI, Machine Learning, and Cybersecurity projects including deep learning, forecasting, recurrent and convolutional neural networks, financial prediction tools, natural language processing models and much more. In addition, I also have full-stack development experience working with customers worldwide. I'm knowledgeable in technologies such as Python, Tensorflow, Pytorch, Scikit-Learn, Keras, JavaScript, ReactJS, NodeJS, Pandas Numpy, SQL, and much more. I have helped build AI projects in a range of sectors, web applications for startups, implemented DS models for e-commerce leading to higher sales performance and retention initiatives along with overall DS and AI related options for businesses of all sizes.

No magic wand? Good thing you found me! SERVICES I OFFER: - UGC Content Creation - Product & Brand Modelling - Video Editing - AI Training & Data Annotation - Data Entry & Data Labeling - Image & Text Annotation - Product, App & Website Testing - Voice Recording & Voice Acting - Graphic Design - Digital Art, Sketching & Painting My goal isn't just to complete your project, it's to become someone you'll want to hire again. Take a look around my profile, I’d love the opportunity to show you what I can do!! :)

🏆 EXPERT-VETTED TOP 1% ON UPWORK |⭐ 5-Star Ratings | Data Analytics and Predictive Modeling|💎MASTER/PHD THESIS Help |✅Statistics, Panel Data, Time series Econometrics |✅ R, PYTHON, SAS, Tableau, Power BI | ✅Data Science, Machine Learning Models | ✅STATA Master, Large Survey Data and Regression Analysis, Economic Policy Evaluation, Predictive Financial Modeling | 🏆PhD and 20 years of experience. ABOUT ME: 🏆 EXPERT-VETTED and TOP RATED PLUS status (TOP 1% on UPWORK) 🥇20 years of working experience with large corporations and institutions (Amazon, the World Bank, International Financial Corporation, University of Pennsylvania) 🎓PhD/Professor in Econometrics/Statistics/Data Science 💎Provide effective help for MASTER/PHD THESIS With proven tracked records of success in Upwork (Expert Vetted Top 1% and Top Rated Plus), overwhelmingly positive feedback with 5* ratings, my PhD and 20 years of experience, I can definitely help you bring out the highest quality, great results for your project and achieve your business goals. I have over 20 years of experience in empirical research, statistical analysis, econometric modeling, data science, machine learning models, data analysis (panel data analysis and time series analysis, complex survey design and analysis), data visualization, storytelling, and project management. I enjoy creating dashboards of data analytics to provide data insights, data trend, meaningful graphs, statistical analysis, story-telling summary that serves as key benchmark to influence business decision. Moreover, I also provide robust statistical evidence, regression/correlation analysis, machine learning predictive models to provide supportive and significant results for business projects. I also help clients understand different statistical techniques, regression techniques, learn excellent statistical language including STATA, SAS, R, and Python to make your life easier. My previous projects on machine learning and econometric modeling include the followings but not limited to: - Data Analysis, Large Survey Data Analytics and Data Visualization. - Linear regression with panel data and time series data. - Forecasting model for time series analysis - Financial modeling such as stock returns, cryptocurrency price prediction, financial indices and financial performance prediction. - Machine Learning models: Random forest, decision trees, KNN, neural network,... - Logistic models, multinomial logit models, ordered logit models. - Economics research, market research, house price, mortgage default prediction, - Program evaluation using different methods such as difference in difference, propensity score matching, instrument variables, fixed effects, regression discontinuity design. I am happy to share my knowledge on machine learning modeling as well as quantitative and analytical skills to help you succeed in your project. In addition, with my experience in participating and presenting in thousands of academic and industry conferences, supervising and guiding hundreds of college and graduate students in their thesis/dissertation, I am very confident that I can help you make a difference in your project and bring out the highest quality and great results for your Master or PhD's thesis/dissertation project. I can also provide statistical advice and statistical analysis including: - Descriptive Statistics. - Bi-variate analyses such as t-tests, correlations, chi-square tests and non-parametric tests for normal and non-normal data. - Multivariate analyses such as ANOVA, MANOVA, LDA, PCA and factoring analysis, regression analysis (see econometric models above). - Review and interpret statistical output, set up the appropriate hypothesis testing and write up conclusion and policy recommendation. - Tutoring Statistics, Math and Econometric courses: including both introduction and advanced courses. I have experience with different types of data including: - Survey data (household, market research, firm/business/country data, house price, loan performance, accounting, finance, health, labor and income, etc.) - Panel data - Time series data I help clients put together and analyze different types of survey data, panel and time series data, getting the data insights, build data trend and data stories with meaningful graphs and great visualization. With proven tracked records of success in Upwork (Expert Vetted Top 1% and Top rated), overwhelmingly positive feedback with 5* ratings, my PhD and 20 years of experience, I can definitely help you bring out the highest quality, great results for your project and achieve your business goals. Looking forward to working with you soon, Dr. Victoria

Most data just sits there doing nothing. I make it work. I'm a Senior AI/ML engineer and data scientist with 10+ years designing intelligent, end-to-end solutions that save clients time, reduce errors, and uncover insights they didn't know they were sitting on. I bridge the gap between raw data and real results — combining advanced analytics with powerful automation to build systems that don't just work once in a notebook, but run quietly every day and earn their keep. I've shipped machine learning models, analytics workflows, and large-scale data pipelines for names like Dr Pepper, Mitel, and Sub-Zero Wolf, plus independent clients across real estate, marketing, and operations. Hand me a vague problem and a pile of messy data — that's exactly where I do my best work. I bring speed, precision, and adaptability to every project. What I bring to your project: • Machine Learning & AI — Predictive modeling, classification, forecasting, customer segmentation, image classification, and decision-support systems using scikit-learn, TensorFlow, and PyTorch. Comfortable across the full ML lifecycle: framing, feature engineering, training, evaluation, and deployment. • Agentic AI & LLM Systems — Autonomous AI agents and multi-agent workflows that plan, reason, and take action end-to-end. Building with LangChain, LangGraph, and the OpenAI/Anthropic APIs, plus RAG pipelines, vector databases (Pinecone, Chroma), tool/function calling, and MCP integrations that connect LLMs directly to your data and systems. • Data Science & Analytics — Statistical analysis, time-series forecasting, A/B testing, exploratory data analysis, and KPI tracking that translate numbers into clear, actionable insight. • Automation & Workflow — n8n, Make, ElevenLabs, Retell.ai, Custom Python tools, browser automation, API integrations, and Docker-based pipelines that eliminate repetitive manual work and run hands-free. • Web Scraping & Data Collection — Large-scale, structured extraction from public directories, social platforms, e-commerce catalogs, and APIs (Selenium, BeautifulSoup, Scrapy). • Data Engineering & Pipelines — Cleaning, validation, deduplication, and transformation into analysis-ready datasets; end-to-end ETL/ELT orchestration with Airflow. • Visualization & Reporting — Decision-ready dashboards and reports in Tableau, Power BI, and Python (Matplotlib, Plotly), Looker studio. • Enterprise Platform — Microsoft Copilot Studio, Salesforce, Google Vertex AI, AWS Bedrock, Azure AI, UiPath Select results: • Automated a real estate firm's invoice processing, cutting a 4-person workload by ~90%. • Built an image analytics pipeline for a major beverage brand to identify the content elements that drive engagement. • Scraped and structured 500k+ Instagram images for model training and analysis. • Delivered high-value datasets powering corporate marketing, sales targeting, and geographic analysis. Technical toolkit: • Languages: Python, SQL, Bash, R • AI/ML: scikit-learn, TensorFlow, PyTorch, Keras, computer vision, NLP fundamentals • Data Science: pandas, NumPy, statistical modeling, forecasting, A/B testing, feature engineering • Automation & Scraping: Selenium, BeautifulSoup, Scrapy, API integrations, RPA-style workflows • Data Engineering: Apache Airflow, ETL/ELT, SQLAlchemy, PostgreSQL, SQLite • Backend: Flask, REST APIs • DevOps & Tools: Docker, Git, Jupyter, Postman, Linux, pytest • Visualization: Tableau, Power BI, Matplotlib, Plotly, Looker Studio Let's build something that works smarter, faster, and delivers results you can measure. Tell me what you're trying to accomplish, and I'll show you exactly how I'd approach it.