Tuur Van holen

Ongoing freelance engagement as full-stack capacity for client projects: greenfield next to extensions on what already runs. Hybrid.

• TypeScript
• React
• Node
• SQL

Belgian scale-up (imec.istart, VLAIO) building workplace wearables that measure posture and movement to prevent back and shoulder complaints.

• Designed and maintained data pipelines for sensor data
• Backend in Python on Azure Functions, turning raw wearable data into ergonomics figures a prevention adviser can act on
• Frontend work on the existing application

• Python
• Azure Functions
• Azure Pipelines
• Data engineering

Belgian pharma service that pre-portions chronic medication per intake moment, offered through pharmacies. Built the complete software package with one other developer.

• Pharmacists manage the medication schedules there, and the application drives the machine that physically produces the rolls through API calls
• Task queues (BullMQ) for the asynchronous production jobs
• The two of us owned a production-critical healthcare system, from database schema to the machine on the floor
• More than a year in production, used daily by pharmacists

• NestJS
• React
• BullMQ
• SQL
• REST to machines

• Set up and ran a data pipeline for processing wearable data
• Contributed to ML models that recognise patterns in the datasets
• Designed filter functions that reduce noise and raise data quality

• Python
• scikit-learn
• TensorFlow