Hire the Best Shiny Specialists

4+ years building BI end-to-end Infrastructure. I sit with the ambiguity, ask what your team hasn't, and translate fuzzy business goals into a clear data model and KPI framework that holds up under scrutiny. 🧠 𝐖𝐡𝐚𝐭 𝐈 𝐛𝐫𝐢𝐧𝐠 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐭𝐞𝐚𝐦 🔹 Ambiguity → Clarity: I define the right questions and metrics before building anything, so you measure what matters, not what's easy. 🔹 Semantic & Data Modeling: Star schemas, slowly-changing dimensions, reconciled grain, single source of truth 🔹 Scalable Architecture: Pipelines and models designed for "Day 2", maintainable, cost-aware, documented, built to grow instead of breaking at scale. 🔹 Context Integration: I unify Stripe, Shopify, Zoho, GA4, Ads platforms, etc. and CRMs into one coherent ecosystem that mirrors how your business actually operates. 🔹 Narrative & Decision Design: Every visual answers a business question and points to an action, analysis a CEO can act on in seconds. ⚙️ 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗧𝗼𝗼𝗹𝗯𝗼𝘅 🔹 BI & Viz: Power BI, Looker Studio, Zoho Analytics, Metabase, Apache Superset, Domo, Databox 🔹 Modeling & Query: SQL, DAX, Power Query (M), Python, dbt, Excel 🔹 Warehousing: BigQuery, Cloud SQL, Snowflake, SQL Server, MySQL, Firebase 🔹 Pipelines & ETL: Make, n8n, Fivetran, Apps Script, Cloud Run, Windsor AI, Coupler IO, Supermetrics 🔹 Sources: Stripe, Shopify, Zoho CRM, GA4, Google/Meta/TikTok Ads, Search Console, etc. 🔹 AI layer (the plus): OpenAI & Claude APIs, Claude Code, Codex, conversational analytics, anomaly detection, predictive models, and agent workflows for automated briefings & alerts 🚀 𝗪𝗵𝗮𝘁 𝗦𝗲𝘁𝘀 𝗠𝗲 𝗔𝗽𝗮𝗿𝘁 🔹 Business-first, not tool-first: I start with your objectives and constraints, not your dataset. 🔹 End-to-end ownership: From auditing sources and defining KPIs to modeling, building, and publishing, I run the full lifecycle. 🔹 Transparency: You own your data and infrastructure. I document every step, so nothing is a black box. 🔹 AI as leverage, not a gimmick: I automate the repetitive parts so the strategic parts get more of my attention. ⭐ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗦𝘁𝗮𝘆 🔹 Reliable communication and clear expectations , no micromanagement needed. 🔹 Insights in plain language, for technical and non-technical stakeholders alike. 🔹 Proactive: I diagnose and recommend, not just deliver charts. 🔹 Consistent delivery, on time, with care. 💡 𝗟𝗲𝘁'𝘀 𝗕𝘂𝗶𝗹𝗱 𝗬𝗼𝘂𝗿 𝗗𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺 If your business generates data but not clarity, let's fix that. I'll design the model, architecture, and dissemination layer that turn your numbers into a durable competitive advantage, clear, scalable, and genuinely yours.

Your dashboard is not the problem. The problem is the spreadsheet behind it. The export nobody fully trusts. The KPI definition that changed three times. The manual step someone forgot to document. The number that looks right until another report says something different. That is the part I fix. I work on broken dashboards and fragile reporting workflows: CRM exports, spreadsheets, CSV files, APIs, R Shiny apps, and internal reports that technically exist, but are too manual, inconsistent, or unclear to rely on. I do not just make dashboards look better. I review how the data is created, where the reporting logic breaks, which fields are safe to use, what needs to be cleaned or restructured, and what should be documented so the same problem does not come back next week or next month. You will not get a passive data cleaner. You will get someone who asks practical questions, challenges unclear logic, makes decisions when the structure is messy, and keeps the work moving instead of waiting for perfect instructions. What I can do for you: • Fix broken dashboards where the numbers do not match the source data • Audit R Shiny apps and reporting workflows for logic, structure, and data issues • Rebuild manual reporting processes built around repeated Excel, CSV, CRM, or API exports • Clean and structure messy operational data before it reaches a dashboard • Review KPI definitions and reporting logic • Build R/Shiny dashboards for internal decision-making • Create R Markdown / Quarto reports that can be updated again • Add validation checks before numbers reach the final report • Document the workflow so your team can maintain it later Recent outcomes: • Reduced manual reporting time by ~80% by replacing repetitive CRM exports with an API-connected R/Shiny dashboard • Reviewed operational, clinical, and billing data in a multi-location healthcare CRM environment • Structured fragmented transaction records into a clearer reporting workflow • Turned raw survey data into validated customer segments for strategic targeting Core tools: R, SQL, Shiny, R Markdown/Quarto, tidyverse, Excel/CSV workflows. You are probably a good fit if you already have reports, dashboards, spreadsheets, apps, or exports — but the process is too manual, inconsistent, unclear, or hard to trust.

I help businesses automate reporting, build reliable data pipelines, and develop machine learning solutions that turn raw data into actionable business insights. With 2+ years of experience, I've helped startups and businesses save time, eliminate manual work, and make better decisions through Python, SQL, automation, and AI-powered data solutions. Here's what I can help with 📊 Dashboards & Business Intelligence Looker Studio, Google Sheets, Excel, GA4 Google Ads & Search Console reporting CRM dashboards, KPI tracking, and executive reporting Interactive dashboards with automated refreshes ⚙️ Data Engineering & Automation Python scripting and ETL pipelines API integrations and data synchronization Workflow automation with n8n and Zapier Data cleaning, transformation, and scheduled reporting 🤖 Machine Learning & Predictive Analytics Classification and regression models Customer segmentation and churn prediction Forecasting and time-series analysis NLP and business analytics 🧠 AI & LLM Solutions OpenAI & Claude API integrations RAG pipelines AI-powered document extraction and summarization Intelligent business assistants and workflow automation 🧹 Data Preparation Cleaning messy spreadsheets and databases Combining data from multiple sources Fixing broken reports and improving data quality Preparing datasets for analytics and machine learning Why clients hire me ✔ Clean, maintainable, well-documented code ✔ Strong business understanding—not just technical implementation ✔ Clear communication and reliable project delivery ✔ Solutions built to be scalable, practical, and easy to maintain If you're looking for someone who can bridge the gap between business goals and technical execution, I'd be happy to discuss your project. --------------------------------------------------------------------------------------------------------------------- Data Scientist | Python Developer | SQL | Machine Learning Engineer | Data Analyst | Predictive Modeling | Classification | Regression | Data Cleaning | Data Visualization | Dashboarding | Looker Studio | Google Data Studio | Business Intelligence (BI) | Excel Dashboards | Google Sheets | Automation Specialist | n8n | Zapier | Python Scripts | ETL | Pandas | NumPy | Scikit-learn | NLP | Sentiment Analysis | Time Series Forecasting | ARIMA | Prophet | Streamlit

Associate Director-level data professional with 10+ years of experience turning complex data into actionable insight across analytics, product operations, and AI-driven solutions. I specialise in end-to-end data workflows — from database architecture and SQL optimisation to interactive dashboards and automated reporting pipelines. My toolkit includes SQL, Power BI, R, R Shiny, and Python, and I hold an MSc in Data Analytics backed by a First Class BSc in Computer Software Engineering. Recent highlights include: ∙ Building R Shiny dashboards to replace legacy manual processes, dramatically reducing turnaround time and human error ∙ Designing and optimising SQL procedures for performance at scale ∙ Delivering analytics solutions aligned to business KPIs in regulated, enterprise environments I bring the rigour of a senior corporate role to every freelance engagement — clear communication, structured delivery, and a genuine focus on outcomes rather than outputs. Whether you need a one-off dashboard, a data pipeline overhaul, or ongoing BI support, I’ll deliver work that’s clean, documented, and built to last.

I'm a Data Analyst and Machine Learning Specialist with hands-on experience in delivering AI-powered solutions and actionable insights. I specialize in data analytics, web scraping and predictive modeling, helping businesses make smarter, data-driven decisions. 1. Skilled in Python, R, SQL, Excel, Google Sheet, Power BI, and statistical analysis 2. Expert in web scraping and automation (BeautifulSoup, Selenium, Scrapy) 3. End-to-end solutions: from data collection to insights and visualization 4. Clean code, scalable workflows, and strong data ethics Whether you need a custom dashboard, a machine learning model or automated data scraping from websites I can help. Clear communication, timely delivery and client satisfaction are my top priorities. Let's connect and get started on your next data project!

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. 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 behind their production multi-agent chatbot, live ahead of their fundraise. • A Fortune 500 consumer brand: I built a shelf-life forecasting platform that turned weeks of manual modeling into 30-second predictions. • An Italian telecom firm: I built an LLM document validation pipeline that cut compliance review from days to minutes, with zero false approvals against their own 99.7% precision target. • A Dutch water consortium: I built an anomaly-detection system that caught real contamination with zero false alarms, then grew it into a 12.3M-measurement data platform that their own team can run without a developer. → 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, 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