Hire the Best Predictive Analytics Specialists

🏆 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

DATA SCIENTIST — everything I build, you can verify the math. I deliver transparent, auditable data models where every number can be checked. Specializing in quantitative research, statistical modeling, Data insights and automation. QUANTITATIVE RESEARCH & PORTFOLIO CONSTRUCTION : I build and backtest equities, with live execution and kill switches on Alpaca where needed. Position sizing, risk allocation, rebalancing logic, all of it grounded in the math, not gut feel. Quick example of how I think: a momentum strategy covering 145 stocks was delivering 41% CAGR. Expanding to 245 stocks dropped it to 36%. Counterintuitive. The root cause: New stocks were selected on hot recent momentum, so by entry their cycle was already done. Built a 5-filter Monte Carlo system, tested 700+ parameter combinations, to identify which satellites are early-cycle vs peaked. Result: 43%+ CAGR with lower drawdown than the 145-only baseline. The problem wasn't the strategy. It was the timing of entry. Another example: I built a live MBS (Mortgage-Backed Securities) forecasting and trading system for a fund client, covering 265+ cohort securities across weekly, monthly, and quarterly return horizons. The interesting part wasn't the ML, it was the feature design. Standard technical indicators on bond prices are noise. What actually drives MBS price movements is duration, convexity, prepayment rates, regime variables like curve steepness, VIX, and Fed MBS holdings. Every feature built from first principles, nothing borrowed from a vendor that can't be verified. This is where I spend most of my time. Systematic backtests, portfolio construction, Monte Carlo optimization. No black boxes, no ML hype every output can be checked in a spreadsheet. Not "add more data." Find the actual structure driving returns, and build features that reflect it. DATA SCIENCE & ANALYTICS I've worked across real estate, e-commerce, and financial analytics, usually called in when a team has data but no clear answer yet. I focus on getting to a decision you can act on, not a 40-slide deck. Results worth mentioning: ML automation cut a client's data processing from 286 days to 1 day, after they'd run the same manual process for two years without realizing it was automatable Ad spend attribution model that improved campaign ROI by 25% WHAT MAKES ME DIFFERENT ▸ I show my work. Every model, every analysis, every number comes with the method behind it, so you're never trusting a black box ▸ I'd rather tell you a strategy doesn't hold up than build you something that looks good and fails in real world. ▸ I scope real problems fast: send me what you're working with and I'll tell you within 24 hours if and how I can help

I'm an Upwork Expert-Vetted Data Scientist who covers what usually takes two specialists: classic ML and modern LLM systems, shipped to production. Nobody understands your business like you do, and you know exactly the bottleneck you want gone. You want someone who can see it just as clearly, bring it to life the way you imagined, and build it to last. That has been my track record. Imagine handing off your idea, and what comes back makes you say, "This is exactly what I had in mind!" That is the feedback I hear most from my clients. Here's what working together looks like: You explain the vision once. I turn it into a clear plan, build the system end-to-end, and ship something your team can actually run and trust. Whether it's an LLM or RAG application, an AI agent, or a forecasting or anomaly-detection engine, it is handed over to you already deployed in production, documented, and yours to keep building on. What my clients say: → "She took our vision as her own and brought it to life." → "When she says she'll handle something, it's done." → "Hwei is the proverbial needle in a haystack. She gets it. She gets it done." Recent projects: • A US women's health startup: I led the AI intelligence layer at the core of their v1.0, live before their funding raise. • A Fortune 500 consumer brand: I built a stability testing platform that turned days of manual work into seconds. • An Italian telecom compliance consultancy: I built an LLM document-processing pipeline that cut review time from days to minutes, with zero false approvals. • A Dutch water consortium: I built an anomaly-detection dashboard that flagged genuine contamination events with zero false alarms. → Expert-Vetted · Top 1% on Upwork · 100% Job Success → ML and AI since 2018 · 8 published papers · trained at Fraunhofer SCAI and the University of Hamburg Tell me what you're trying to build, and I'll reply with a clear path forward, built around your goals. ================== Tools and capabilities: • Generative AI and LLMs: large language models, RAG (Retrieval Augmented Generation), AI agents and multi-agent systems, chatbots, prompt engineering, LLM evaluation, vector databases (ChromaDB), LangChain, Pydantic AI • Machine learning: predictive modeling, anomaly detection, time series forecasting, predictive maintenance, statistical analysis, deep learning, computer vision, natural language processing (NLP) • Engineering and delivery: Python, FastAPI, Docker, cloud deployment (AWS, Azure, Render), data analysis, data pipelines, interactive dashboards (R Shiny, Streamlit, Gradio), data visualization • Model APIs: OpenAI, Anthropic Claude, Google Gemini, Hugging Face • Consulting: artificial intelligence (AI) strategy, AI implementation, AI consulting, code audits, knowledge transfer

I am a Senior AI Engineer with 5+ years of experience building AI-powered applications, intelligent automation systems, and scalable machine learning solutions for real world business environments. I help startups, agencies, and businesses transform ideas into production ready AI products from prototype to deployment. My expertise includes Generative AI, Large Language Models (LLMs), AI Automation, Machine Learning, NLP, AI Agents, Workflow Automation, and custom AI integrations using modern AI frameworks and cloud technologies. What I Can Help You With AI Core Services * Generative AI Application Development * ChatGPT & OpenAI API Integration * Custom AI Chatbots & AI Assistants * Large Language Models (LLMs) * Machine Learning & Deep Learning Solutions * Natural Language Processing (NLP) * AI Agents & Autonomous Workflows * Computer Vision & Image Processing * OCR & Document AI Systems * RAG Pipelines & Vector Database Integration * AI Model Deployment & Optimization * Predictive Analytics & Recommendation Systems AI Automation Services * AI Workflow Automation * Business Process Automation * Customer Support Automation * CRM Automation * Email Automation * Lead Generation Automation * AI Sales & Marketing Automation * No-Code / Low-Code Automation * AI Integration with APIs & Third Party Platforms * Automation using n8n, Make(.)com, and Zapier Technologies & Tools Python, OpenAI API, ChatGPT, LangChain, LlamaIndex, TensorFlow, PyTorch, OpenCV, FastAPI, Docker, AWS, Pinecone, Weaviate, PostgreSQL, REST APIs, Linux, Git, n8n, Make(.)com, Zapier, and cloud based AI infrastructure. Why Work With Me * 5+ years of experience in AI & Automation * Production ready and scalable AI solutions * Strong focus on performance, efficiency, and reliability * Clean architecture and maintainable code * Fast communication and professional collaboration * End-to-end development from idea to deployment You can replace those lines with this stronger and more client-focused ending: I focus on developing scalable AI solutions that improve efficiency, automate workflows, and deliver practical value for businesses. Whether you need AI-powered automation, custom AI applications, machine learning solutions, or intelligent workflow systems, I can help turn your requirements into reliable and production ready solutions. Let’s transform your ideas into smart, scalable AI solutions with powerful computer vision and perception systems designed for real world impact. Best regards, Sana.

📊 Data Scientist & Analytics Consultant | BSc Accounting & Finance | MSc Data Science | UK Based I help businesses stop guessing and start deciding with confidence. Whether you have data scattered across five systems, dashboards nobody trusts, or reports that take days to produce manually, I come in and sort it out – from the messy raw data all the way through to clear, reliable outputs that people actually use. 🔍 What I do ▸ Data audits and validation: tracing KPIs back to their source and confirming whether the numbers are right ▸ Unified reporting: building a single source of truth across multiple platforms and business systems ▸ Dashboard development: Power BI, Tableau, and Excel reporting that non-technical teams can read and act on ▸ Predictive modelling: forecasting, trend analysis, and performance models built in Python, R, and SQL ▸ Financial analytics: P&L, EBITDA, cash flow, debtor days, margin analysis and other finance KPIs ▸ Ad hoc analysis: quick, clear answers to specific business questions 🏢 Industries I have worked across ▸ Manufacturing (including a 40,000-employee global organisation) ▸ Digital and ecommerce ▸ Financial services and fintech ▸ Supply chain and operations ▸ Marketing and commercial 🎓 Background BSc Accounting and Finance: so I understand what the numbers mean to the business, not just how to calculate them. MSc Data Science: so I can get into the data, validate it properly, and build robust models and reporting on top of it. 8+ years working with multinational organisations across complex, multi-system environments. 🛠 Tools and technologies Python · R · SQL · Power BI · Tableau · Excel · Xero · JobLogic · various ERP and CRM platforms ✅ How I work I am based in the UK, work to strict deadlines, communicate clearly throughout a project, and deliver work I am genuinely confident in. If my output does not meet your expectations, I will make it right.

I help businesses, researchers, and startups turn raw data into clear insights, dashboards, reports, and predictive models using Python, Excel, statistics, and machine learning. With a strong background in data analysis, statistics, applied mathematics, and machine learning, I deliver work that is accurate, well-structured, and easy to understand, not just numbers, but meaningful conclusions. I can help you with: • Data cleaning, preprocessing, and wrangling • Excel-based analysis, reports, dashboards, formulas, and automation • Python data analysis using Pandas, NumPy, Matplotlib, and Seaborn • Statistical analysis, regression, hypothesis testing, and forecasting • Data visualization and dashboard development • Machine learning models and predictive analytics • Time series analysis and financial/business modeling • Web scraping, market data extraction, and structured datasets • Research and academic-level data analysis • Mathematics, statistics, econometrics, and machine learning tutoring Why clients choose me: • 100% Job Success and Top Rated profile • Proven experience across business, finance, marketing, research, and academic projects • Strong foundation in mathematics, statistics, and machine learning • Clear communication and structured explanations • Reliable delivery and respect for deadlines • Ability to explain complex results in simple, useful language I focus on understanding your problem first, then applying the right analytical method to deliver results you can trust and use confidently. Send me a message with your dataset or project description, and I’ll suggest the best approach before we start.