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Lars Cornelissen

Data Engineer | AI Implementation Expert | Software Builder

Practical data and AI engineer who turns unclear business challenges into shipped systems: cloud data pipelines, automation, LLM workflows, dashboards, FinOps visibility, and products that move beyond the demo stage. Experienced in enterprise data environments at Alliander and as owner of Datastudy.

Lars Cornelissen

About

I am an enthusiastic Data Engineer with a passion for data analytics, machine learning, AI implementation, and useful business automation. I have experience working with large datasets, applying statistical methods, developing predictive models, and building systems that connect data work to practical outcomes. Outside work I keep building software products, intelligent LLM systems, and technical projects.

Experience

FinOps Expert & AI Engineer, Alliander

Arnhem / Amsterdam / RemoteMar 2025 - Current

Driving FinOps implementation and cloud cost accountability across the F4F Data platform, while building AI and RAG-based tooling on Snowflake and AWS. Turning cloud spend into clear decisions and shipping LLM assistants that speed up data work.

FinOpsAI EngineeringRAGSnowflakeAWSPython

Snowflake / Matillion Expert, Alliander

Arnhem / Amsterdam / RemoteDec 2023 - Mar 2025

Designed and maintained production cloud data pipelines and reusable data products on Snowflake and Matillion for the F4F Data program. Established platform standards, automation, and reliable ELT flows for enterprise analytics at scale.

SnowflakeMatillionPythonAWSSQL

SAP HANA to Snowflake Migration, Alliander

Arnhem / Amsterdam / RemoteAug 2023 - Dec 2023

Led the migration of enterprise data models and workloads from SAP HANA to Snowflake, re-engineering legacy logic into cloud-native pipelines while preserving data integrity.

SAP HANASnowflakeMatillionPythonSQL

Student SAP Consultant, Alliander

Arnhem / Amsterdam / RemoteMay 2023 - Jul 2023

Student SAP consulting work using SAP HANA, Python, and R to analyse enterprise data and explore early AI concepts, building the foundation for the cloud data work that followed.

SAP HANAPythonRData Analytics

Owner and Lead Data Engineer, Datastudy

DatastudyJul 2022 - Present

Creating AI, automation, full-stack, and data engineering products for practical business use cases, with a focus on turning raw information into actionable intelligence and usable workflows.

AI EngineeringRAGFullstackPythonFFMPEGAutomation

Freelancer, Fiverr

Freelance automation and AIAug 2022 - Mar 2023

Delivered Python, automation, artificial intelligence, and FFMPEG-related work as a freelancer.

Selected Product Work

Galivora

galivora.com

Recipe-management platform for professional chefs and restaurants, built to preserve culinary knowledge, manage recipe versions, collaborate with teams, and import recipes from PDFs or photos.

StreamClick

streamclick.org

Programmatic influencer-marketing platform with automated bounty pools, AI compliance checks, audience analysis, and instant creator payouts.

AI Stellingen Swipe

stellingen.datastudy.nl

Dutch AI-readiness assessment that lets users swipe through business statements to determine organizational AI readiness.

BusinessFlowAI

business-flow-ai.com

AI-driven platform that analyzes PDF files to generate business flow charts.

Spotimatcher / Suggestsongs

suggestsongs.com

AI-driven song recommendation platform that suggests new songs based on previous song ratings.

Fully AI-automated YouTube channel with more than 10,000,000 combined views.

University Projects

AutoDev: An LLM-Driven Automatic Developer

Report

Developed an autonomous AI using GPT-4o to control an Ubuntu VM via SSH, iterating on capabilities and efficiency in an SSH-terminal environment.

FMSR: TTR Sales Revenue Improvement

Project

Statistical analysis and advisory report for a tea room chain seeking revenue improvement, based on sales data and quantitative analysis.

Introduction to Modelling

Project

Data analysis, result presentation, and critical evaluation of quantitative research based on provided data.

Extra Details

  • Date of birth: 26 July 2002
  • Preferred work style: remote or hybrid
  • Personal site: larscornelissen.com
  • Business: datastudy.nl