Projects and case studies

A selection of my work in credit risk, along with apps I've built and ideas I'm still exploring. Open a project to read about my part in it and how it's coming along.

Public-data credit-scoring benchmark

Independent public-data benchmark · UCI

ROC-AUC
0.7773
Ranking discrimination
PR-AUC
0.5518
Precision and recall
Brier score
0.1354
Probability error

31.5% of defaults captured in the top 10%.

6,000-row random holdout · Histogram gradient boosting.
Educational results; not employer-model or out-of-time performance.

Featured Risk & ML

Credit Scoring ML

Credit Scoring ML & Risk Modeling

My credit-scoring work covers preparing data, comparing models, and getting the inputs ready for handoff. Here, I use a separate public-data benchmark to share the results openly.

PythonLightGBMScikit-LearnRisk AnalyticsROC-AUC 0.777
Read the case study
Decision flow example
InputRulesDecision

The rules evaluate the input and return a decision with a reason.

Illustrative system pattern, not a live decision engine.

Featured Risk & ML

CDE and GoRules Transformation

CDE & GoRules Decision Engine

I turn lending policies into GoRules decision tables, then check that the rules run in the right order and return the expected results through the API.

GoRules ZenFastAPIDecision TablesAudit EngineParity Tests
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Document extraction and review
Fictional document
Name
Demo Person
Document
Sample only
Extracted fields
Name
Demo Person
Review
Required

KTP extraction + KK layout processing.
No real identity data. KK remains in development.

AI, OCR & Automation

Indonesian Document OCR

Indonesian Document OCR & Parsing

I built a service that reads KTP fields and flags anything uncertain for someone to review. I’m also working on a related pipeline for KK documents.

PyTorchLayoutLMField ExtractionHuman-in-the-Loop
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A local demo of planning and photo memories. Activities are fictional; sample photos are AI-generated. Icons: OpenMoji, CC BY-SA 4.0.
Product Engineering

Koii

Koii: plans and memories for two

I built Koii as a private place for two people to keep a wishlist, plan activities, and save photos from time spent together.

Next.jsSupabaseGoogle Calendar APICloudflare WorkerWeb Push
Read about Koii
A local demo of the dashboard, transactions, and budgets. All amounts are fictional; no account or backend is connected.
Product Engineering

KasMate

KasMate: everyday money management

KasMate brings everyday finances into one place, with transactions, wallets, bills, and monthly budgets. I also built receipt entry and reports to help review the numbers.

ReactTypeScriptTailwind CSSPrivacy ControlsLocal-First
Read about KasMate

All projects

There's more here, including smaller experiments and projects I worked on with others.

Featured Risk & ML

AI, OCR & Automation

Product Engineering

Experiments