Experienced software and data engineer, qualified in analytics and AI

Messydataintolivingsystems.

I build the data, AI and software behind tools people use every day.

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10 years software engineering ✦EngD — TU/e & JADS ✦Digital twin 's-Hertogenbosch ✦KIVI Award finalist ✦Published at CENTERIS 2025 ✦10 years software engineering ✦EngD — TU/e & JADS ✦Digital twin 's-Hertogenbosch ✦KIVI Award finalist ✦Published at CENTERIS 2025 ✦10 years software engineering ✦EngD — TU/e & JADS ✦Digital twin 's-Hertogenbosch ✦KIVI Award finalist ✦Published at CENTERIS 2025 ✦10 years software engineering ✦EngD — TU/e & JADS ✦Digital twin 's-Hertogenbosch ✦KIVI Award finalist ✦Published at CENTERIS 2025 ✦

● Flagship project

A living model of 's-Hertogenbosch

Buildings

Registry data per address

Traffic

Live speed and 24h forecast

Air & weather

PM2.5, NO₂ and the local forecast

Ask the policy

Answers with the source page

car 42 km/hcar 36 km/hcar 48 km/hcar 31 km/hcar 55 km/hcar 28 km/hcar 44 km/hcar 22 km/h

● Traffic layer

Every vehicle, seen and forecast

Camera feeds are turned into moving points on the city twin. Each vehicle is detected, its speed is tracked, and the model forecasts where traffic will slow down next.

In view

0

Avg speed

0 km/h

Passed

0

CO₂

412 ppm

NO₂

24 µg/m³

PM2.5

9 µg/m³

Forecast, next 8 hours

● Where this is going

A living model of the real world

Digital twins turn data into a model you can watch, question and test before acting. I think they will shape how cities, farms and factories are run, in Africa and across the world.

01

Cities

Traffic, air, energy and buildings in one live view, so councils plan with facts instead of guesses.

02

Agriculture

Soil, weather and crop data brought together, so farmers know when to water, feed and harvest.

03

Industry

Machines and production lines mirrored in software, so problems show up before they cost money.

04

Real-world monitoring

Water, climate and infrastructure watched from sensors and satellites, from Africa to Europe and beyond.

Things I've shipped

All case studies →

What I do

01

Data architecture & strategy

Designing how your data should flow, where it lives and who owns it, so the platform can grow without a rebuild.

Data ArchitectureData StrategyData Products
02

Data platforms & warehousing

A warehouse or lakehouse on Google Cloud and BigQuery that everyone can query and trust.

Data PlatformData WarehouseLakehouseData Lake
03

Pipelines & integration

Getting data out of APIs, sensors and systems, in batches or live, and keeping it flowing reliably.

ETL / ELTData PipelinesStreamingIngestion
04

Data modelling & analytics

Clear models and one set of definitions, so every dashboard and report tells the same story.

Data ModelingSemantic Layerdbt
05

Data quality & governance

Tests, lineage and clear ownership, so problems get caught before they reach a decision.

Data QualityGovernanceLineageMetadata
06

AI, forecasting & digital twins

Forecasts, assistants that answer from your own documents, and live models of places or processes.

Machine LearningRAGDigital Twins
07

Software that ships

The apps, APIs and dashboards on top, built with ten years of engineering behind them.

REST APIsMicroservicesDashboards

How a project runs

1

Talk & scope

1–2 weeks

We look at what data you have, what you need, and whether it's doable.

2

Build together

4–8 weeks

You see working software every week, and we adjust as we go.

3

Live & handover

1–2 weeks + optional support

It goes live with documentation. I can stay on for support if you want.

● Tech stack

Proven, open tools. No lock-in.

Pipelines & streaming

01
KafkaSparkAirflowAirbytedbtDelta Lake

Cloud & warehouses

02
Google CloudBigQueryDatabricksAzureAWS

AI & machine learning

03
PyTorchTensorFlowscikit-learnHuggingFaceMLflow

Software

04
PythonTypeScriptJava / SpringSQLRESTMicroservices

Databases

05
PostgreSQLOracleSQL ServerMySQL

Twins & maps

06
CesiumJS3D TilesIoT sensorsOpen data APIs

Kai

Ask Kai about me

Ask about my experience, stack or how I work. Kai answers right away.

K

Kai — ask about my experience

Answers come only from my approved profile. Client details stay confidential.

Clear rates

Hourly, depending on the size of the project. You get a fixed estimate after our first call.

01 · Small1–3 weeks

€45–60/ hour

A dashboard, a data clean-up, a quick prototype or an advice session.

02 · Medium1–3 months

€60–90/ hour

A pipeline plus dashboard, a forecasting model, or an AI assistant on your documents.

03 · Large / complex3+ months

€90+/ hour

Digital twins, real-time systems and projects with several data sources.

Rates exclude VAT.

Is there a data problem your team keeps working around?