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KKKaan KayaDATA SCIENTISTEmail Kaan

KAAN KAYA · DATA SCIENTIST · LUXEMBOURG

From financial controls
to decision systems.

I spent a decade moving upstream—from reconciling the number, to building the data platform behind it, to modelling what informs the decision. Today I work across prediction, explainability, and causal inference.

See selected work See work history

Current focus Platforms · LightGBM · SHAP · DML / DoWhy

Since 2015 across finance and data8 public builds2 master's degrees

PUBLIC WORK

What I can show
in the open.

My day-to-day work is private. These projects show how I think about systems, models, and useful products.

01

ORIGINAL BUILD · Learning product

AI Code Arena Quest

The machine-learning practice environment I wished I had: code-first challenges, real datasets, and immediate feedback.

React · Machine Learning · AI Education

Read case study Try the product
02

ORIGINAL BUILD · Data platform

DeFtunes Data Pipeline

One dataset, end to end—from ingestion and orchestration to modelling and a decision-ready dashboard.

AWS · Airflow · dbt

Read case study View source
03

ORIGINAL BUILD · Data product

GraphFlow ETL Suite

A TypeScript workbench for turning tables into graph schemas and repeatable Neo4j loads.

TypeScript · Neo4j · ETL

View source
04

ORIGINAL BUILD · Applied AI

LectureNotes RAG System

A local-first retrieval system for grounded questions over my academic notes, using FAISS and private inference.

RAG · FAISS · GPU Acceleration

Read case study View source

More from the lab

Full GitHub profile

ORIGINAL EXPERIMENT

Stock Performance & ESG Scores

An early bridge between my finance background and Python, exploring company performance beside public ESG indicators.
Open dashboard

COURSE WORK · CLEARLY CREDITED

PyTorch for Deep Learning

Forty-four notebooks covering fundamentals, architectures, tuning, interpretation, and ONNX deployment.
Browse notebooks

COURSE WORK · CLEARLY CREDITED

Machine Learning Specialization

Implementations spanning regression, neural networks, clustering, recommenders, and reinforcement learning.
Browse notebooks

COURSE WORK · CLEARLY CREDITED

NVIDIA Multimodal AI Agents

Eight attributed notebooks on multimodal fusion, OCR, vector search, and Graph RAG.
Browse notebooks

WORK HISTORY · 2015—PRESENT

Data scientist from the start.
Broader because of the route.

I began in e-commerce data science, then worked through P&L, market risk, regulatory reporting, platforms, and data products. Each step added context I now bring to modelling and causal work.

Full work history

Eight roles · finance, platforms, and data science

  1. Jan 2025 - Present

    Amazon

    Data Scientist

    CURRENT ROLE
    Luxembourg

    Building data products and analytical tools for operational decision support.

    Data Science · Machine Learning · Explainable AI

  2. Aug 2024 - Jan 2025

    Hubfinance

    Senior Data Analyst (Head of Data)

    Luxembourg

    Led data strategy and implementation for a fintech startup.

    NLP · Power BI · Python

  3. May 2022 - Jul 2024

    Schroders

    Technical Business Analyst (Data Analyst)

    Luxembourg

    Transformed financial and regulatory reporting processes for a global asset manager.

    Financial Reporting · Data Modeling · SDLC

  4. Aug 2021 - Apr 2022

    Lingaro, Carmignac

    Data Consultancy & Contract Work

    Warsaw & Luxembourg

    Delivered data management, automation, and reporting solutions for multiple clients.

    Consultancy · Data Management · Regulatory Reporting

  5. May 2020 - Jul 2021

    Standard Chartered Bank

    Technical Business Analyst (Associate Director)

    Warsaw

    Led strategic redesign of market risk reporting systems for a global bank.

    Market Risk · Automation · Regulatory Compliance

  6. Oct 2018 - Oct 2019

    J.P. Morgan

    Senior Financial Analyst

    Warsaw

    Partnered with trading desks and risk teams on P&L reconciliation and data quality.

    P&L · Trading Analytics · Risk Metrics

  7. Jul 2016 - Sep 2018

    NatWest Markets

    Financial Analyst

    Warsaw

    Contributed to standardization and automation of daily P&L reports.

    P&L Reporting · Automation · Data Consistency

  8. Mar 2015 - Jul 2016

    FRU.PL

    Data Scientist

    FIRST DATA SCIENCE ROLE
    Warsaw

    Built early ETL pipelines and dashboards for a high-growth e-commerce business.

    ETL · Dashboards · E-commerce Analytics

HOW I WORK

Start with the decision.
Work backwards.

The model is only useful if the data holds up, the reasoning can be inspected, and the result fits the way people work.

01 / BUILD

Can the analysis survive outside the notebook?

I start with reusable data foundations, evaluation paths, and an interface that fits the decision.Platforms · data contracts · evaluation

At Amazon, I build internal decision-support data products. Business context, scale, and implementation details remain private.

EDUCATION & LEARNING

Two disciplines.
One practice.

Finance taught me to respect the number. Computer science is helping me build the systems around it.

2024 - 2027 · IN PROGRESS

MSc in Computer Science

Heriot-Watt UniversityStudying computer science alongside my data-science practice, with a focus on the software and machine-learning foundations behind reliable systems.

2015 - 2017

Master in Finance and Accounting

Kozminski UniversityWhere I learned to reconcile numbers, understand P&L, and treat analytical outputs as something that must stand up to scrutiny.

RECENT CREDENTIALS

Selected learning

2026
PyTorch for Deep Learning Professional CertificateDeepLearning.AI
2025
Building AI Agents with Multimodal ModelsNVIDIA DLI
2024
Data Engineering and AWSDeepLearning.AI
See all eight credentials
2026
PyTorch for Deep Learning Professional CertificateDeepLearning.AI
2025
Building AI Agents with Multimodal ModelsNVIDIA DLI
2023
Machine Learning SpecializationStanford University
2024
Data Engineering and AWSDeepLearning.AI
2023
Advanced Data Analytics Professional CertificateGoogle
2023
AZ-900: Microsoft Azure FundamentalsMicrosoft
2022
Professional Scrum Master (PSM I)Scrum.org
2022
Certified Scrum Product OwnerScrum Alliance

WORKING TOOLKIT

Tools, in context

Data platforms

Python · SQL · AWS · Airflow · dbt · Spark

Machine learning

GenAI · TensorFlow · PyTorch · scikit-learn · NLP · Pandas

Decision interfaces

Power BI · Tableau · Looker · QuickSight · Superset · Excel

Based in Luxembourg. I work in English and Turkish, speak Polish conversationally, and am learning Luxembourgish and French.

Away from the screen: electric guitar, piano, and gardening.

CONTACT

Let's compare notes.

If you are working on a messy decision problem—or simply want to compare approaches to explainable ML, causal inference, or data platforms—send me a note.