OCT 2023 — PRESENT · APELDOORN, NL · HYBRID
Co‑Founder & Data Scientist — TextPast
Builds provenance‑first, neuro‑symbolic data systems for the heritage and public sectors — RootReal, a neuro‑symbolic collection‑management system, and Bronhouder, a semantic alignment workbench (bronhouder.nl). RootReal's polymorphic hypergraph on TypeDB is the runtime authority over 70+ source ontologies, and natural‑language questions are answered by SPARQL, Cypher, or TypeQL queries validated against SHACL shapes before execution — no hallucinated answers at the source. textpast.com
AUG 2021 — PRESENT · FULL‑TIME
Senior Data Engineer — Nationaal Archief
Developed the solution architecture and a natural‑language processing application that generates Linked Open Data from the Archives' inventories, indices, transcriptions, and external sources. A bespoke Rust production application feeds verified source data — archival records, relevant legislation, related curricula — to large‑language‑model workflows, so complex user questions are answered by pointing directly at fully traceable records.
FEB 2021 — AUG 2021
Scientific Researcher — Koninklijke Bibliotheek
Initiated research into a machine‑learning Named‑Entity application for the digitized Indies / Indonesian newspaper collections on Delpher (National Library of the Netherlands) and Opac (National Library of the Republic of Indonesia).
FEB 2020 — AUG 2021
Project Leader — Arsari Group
Researched Margono Djojohadikusumo (1894–1978) — founder of the Indonesian National Bank and a leading indigenous expert at the colonial Office of Co‑operatives. The biography draws on long‑term analysis of the Javanese aristocracy's socio‑economic position via handwritten‑text recognition of VOC, colonial, and Republican archives.
JUL 2019 — JUL 2020
Project Leader — The British Library
Led the digitization of over 21,000 pages of Javanese manuscripts from private collections in Central and East Java. Handwritten‑text recognition and probabilistic indexing produced the first‑ever text‑recognition model of Javanese script. eap.bl.uk
FEB 2019 — DEC 2019
Project Leader — Nikon Corporation
Led the digitization, data‑mining, and cataloguing of the Kartini Collection — the most extensive private map and print collection in Indonesia.
NOV 2018 — APR 2019
Photogrammetrist — DE REE Archiefsystemen
Applied photogrammetry and photography to digitize and catalogue objects in the museum of the Hadiningrat court of Yogyakarta. kratonjogja.id
MAR 2018 — MAR 2019
Project Leader — Delft University Library
Led the digitization of over 30,000 pages of colonial notary records from Javanese towns — long thought lost, traced by the team in private collections. Data‑mining revealed unique insights into the early‑twentieth‑century colonial real‑estate market. colonialarchitecture.eu
JUN 2016 — DEC 2017 · YOGYAKARTA
Digital Archivist — Atlas of Mutual Heritage
Analysed and georeferenced thousands of Dutch colonial maps and prints from the Rijksmuseum, the National Archives in The Hague, and affiliated institutions. atlasofmutualheritage.nl
JUN 2014 — DEC 2015 · ARSIP NASIONAL RI
Digital Archivist — Corts Foundation
Developed relational databases in Python to catalogue the diplomatic letters found in the daily records of the Dutch East Indies archives.
FEB 2012 — MAY 2014
Research Master Student — Leiden University
