Case study 01
May 2026
Fraud Risk Intelligence
An end-to-end fraud analytics platform built on the IEEE-CIS dataset, combining BigQuery, dbt, LightGBM, FastAPI, and a live executive dashboard.
Applied Data ScientistAnalytics Engineer
Verified project library
Public work organized for recruiter and technical review.
Selected projects lead the default view. Supporting industrial and experimental work stays available as a compact archive without competing with the current data-focused positioning.
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10 projects in this view
Last verified 8 October 2026
Case study 02
September 2026
MSCapital Market Forecasting
A production-shaped forecasting system over 804.5M rows of market microstructure, built on a 16 GB laptop, where the main result is an investigation into why the leaderboard disagreed with the hold-out.
Applied Data ScientistData Analyst
Case study 03
September - October 2026
GS Quant Risk Analytics
A value-at-risk and expected-shortfall application built on a fork of Goldman Sachs' open-source gs-quant library: it measures the risk of a series or a portfolio and then tests whether the VaR model deserves to be trusted, with every forecast judged on the return that followed it.
Data ScientistQuantitative Risk
Published evidence
VaR backtested with Kupiec, Christoffersen and Basel traffic light
Case study 04
June–August 2026
Smart Factory App
A predictive-maintenance analytics case study on 10,000 AI4I records, combining EDA, engineered sensor signals, evaluated failure-risk scoring, DuckDB SQL, and a ranked maintenance queue — plus a second, genuine RUL-regression case study on NASA C-MAPSS turbofan data.
Applied Data ScientistIndustrial Analytics
Case study 05
June 2026
Visual QC Project
A steel-defect classification case study using 1,800 NEU-CLS images, handcrafted visual features, model benchmarking, error analysis, and an entropy-ranked review queue, extended with a measured embedding-RAG assistant and a live 3D digital twin of the inspection line.
Applied Data ScientistComputer Vision
Case study 06
September 2026
Diabetic Retinopathy Grading (APTOS-2019)
A retinopathy grading study on 3,662 fundus photographs that tests every claim it makes: whether the model reads the retina or the camera, whether it holds on two other populations, and - when it failed on one - whether the cause was the model or its labels.
Applied Data ScientistComputer Vision
Case study 07
September - October 2026
Kaggle Competitions 2026: CASMI and Playground S6E10
Two live Kaggle competitions worked end to end: Enveda CASMI 2026, a featured competition that ranks candidate molecular structures for MS/MS spectra, and Playground S6E10, a tabular ROC-AUC competition on airline satisfaction. In both, decisions were made on cross-validation and the public leaderboard was treated as a noisy sample.
Data ScientistMachine Learning
Case study 08
February 2026; revised October 2026
OT-Sentinel
An explainable anomaly dashboard for industrial (OT) telemetry: a statistical detector decides, an LLM only explains the verdict, and a labelled rule-based fallback takes over when the LLM is unavailable. The detection method is evaluated offline on the public BATADAL attack benchmark, with a modest result reported as such.
AI EngineerApplied AI
Published evidence
BATADAL: 43 signals, 14 attacks, one false-alarm budget for all detectors
Case study 09
June 2026
Football Player Performance Analysis
A football analytics platform built on Transfermarkt data with BigQuery, dbt, Power BI, and scikit-learn market-value modeling, developed in a fork of an earlier collaborative project.
Applied Data ScientistAnalytics Engineer
Case study 10
April 2026
E-commerce Marketing & Web Performance Analytics
A tested analytics-engineering and BI portfolio spanning dbt/BigQuery marts, DuckDB CI, Power BI, DAX, Olist analysis, cohort/RFM SQL, and statistical testing.
Analytics EngineerBI Analyst
Freelance solutions · delivery example
From messy spreadsheets to reconciled reporting.
A small, fixed-scope Python and SQL-friendly workflow for BI and software agencies that need dependable data preparation and reporting support. This is a public, synthetic demonstration, not a client engagement.
Excel/CSV Reporting Automation
One repeatable workflow. Auditable outputs.
Clean and merge inconsistent files, quarantine invalid records, calculate agreed KPIs and hand off reusable Python code with validation tests. A live HTML dashboard shows the sample output.
Verified synthetic sample
200
Input rows
192
Valid rows
8
Flagged rows
9
Automated tests
Source row reconciliation passes. CI runs on Python 3.11 and 3.12.
01
Import
Two synthetic sources: sales CSV and customer Excel workbook.
02
Validate
Identify invalid values, conflicting orders and unmatched customers.
03
Reconcile
Check that accepted and excluded records account for every source row.
04
Deliver
Export clean data, quality logs, KPI tables and a standalone report.
The hosted page is a static report; it does not accept client file uploads. Scope, fees, confidentiality and delivery dates are agreed after reviewing anonymized sample data.
Discuss a scoped pilotCapability map
Skills connected to inspectable project evidence.
Analytics engineering and BI reporting
Projects where raw business data is transformed into reporting-ready tables, dashboards, and reviewable decision surfaces.
BigQuerydbtPower BIFinance martsReporting layers
Applied data science and ranking logic
Projects where the modeling layer is framed around prioritization, risk segmentation, or operational review rather than generic benchmark claims.
PythonLightGBMHistGradientBoostingscikit-learnVaR backtestingReview queues
LLM applications and AI engineering
Applications where a language model does the work: embedding retrieval measured against a keyword baseline, answer faithfulness scored by NLI against a no-retrieval control, multimodal document parsing, and AI-assisted triage.
RAGEmbeddingsChromaQwen2.5NLI evaluationGeminiGenkitMultimodal prompting
Computer vision and quality workflows
Projects where model evaluation, class-level error analysis, and targeted human review matter as much as the visual signal itself.
scikit-imageHOGGaborRandom ForestHuman review
Industrial systems and operator interfaces
Archive work that demonstrates industrial workflow design, multimodal interface thinking, and operator-centered product packaging.
Next.jsReactFirebaseReact FlowTelemetry UX
Web analytics and instrumentation
Archive work that keeps tracking, storefront instrumentation, and GA4/GTM context connected to the broader analytics portfolio.
Google Tag ManagerJekyllWeb analytics