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Jan-Willem
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Defined Work Happiness
Typically responds within 2 days
Software-ingenieur · 9 years experience
Zuidplas, Netherlands (On-Site, Hybrid, Remote)
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My best work arises when...
Ik mijn tijd ideaal weet te verdelen in research, management en ontwikkeling voor nieuwe innovaties.
Work Experience
Software engineer and data annotator
Feb 2026 – present
Meridial Marketplace, by Invisible
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Writing and verifying medium duration, daily changing sections of coding, documentation and AI instrumentation. This role entails R&D in algorithms, (embedded) engineering and HPC with different, always temporary contractors.
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Keywords: remote work, AI instrumentation, verification, C++23, C23, Python 3, self-motivation
Test subject (biomedical background)
Jun 2025 – Dec 2025
Leiden University Medical Center
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For a longer-term vaccine booster research trial I took part in a targeted subject group (biomedical background).
Software engineer and data annotator
May 2025 – Sep 2025
TELUS Digital
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Writing and verifying shorter duration, daily changing sections of coding, documentation and AI instrumentation.
First employee, researcher and software engineer
Dec 2022 – Aug 2024 · 1 yrs
MEJOR Technologies
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This role was in a brand new startup company for producing innovative, autonomously flying (AI powered) drone systems in wildfire detection, forestry and agriculture. The results achieved per project category were:
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• Research: Established the foundations for research in scientific software, drone hardware, 3 environmental science reports and multiple internal publications of research & technology reports, creating longer-term company plans.
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• Software development: Devised 3 in embedded, 2 in meteorology (back end), 1 in GIS/GEO and 1 in drone-systems.
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• Management: Delivered on the demonstrations to (series A) investors and ongoing stakeholder deliberations. Fortified the company position by visiting 3 conferences, implementing internal documentation, the setup of ISO standards, 2 subsidy applications, project initialisation, project planning, mentorship and recruitment of junior staff.
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• Data science: Modelled 2 statistical reports in climate & fire hazards and automated GIS/GEO data processes.
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• Legal: Drafted initial documentation of broadcasting licences, environmental and EASA legislation regarding drones.
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Keywords: innovation management, documentation (Confluence), data fusion, C++20, Python 3, embedded hardware, IoT
Scientific software engineer
Feb 2022 – Nov 2022
VORtech BV
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This role revolved around research, software engineering and project management for various clients, and a few internal assignments. Minor achievements were in my first introduction to consultancy, and my cooperative tasks for TNO and Rijkswaterstaat. Larger achievements came from projects for:
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• Leiden University, Biomedical department, for which the team made an approximate, optimised biochemical software model for multiple simulations in drug research in the human brain.
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• Wageningen University & Research, Animal Studies department, for which the team optimised a gene statistics programme for the scientific analysis of cattle breeding stock.
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• Shell Global, R&D department, for which I researched, re-documented and set up the (re-)implementation of four sets of spatial analysis filters in a larger, existing project. (Note: this had a security clearance requirement.)
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Keywords: R&D, high-tech systems, applied mathematics, C++20, Python 3, Fortran 2018, high-performance computing
Technical support and software
Jan 2018 – May 2020 · 2 yrs
Digital government centre
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In this role I handled often the irregular, but very much varied tasks for development, digital support, tooling and repairs in (semi-)governmental organisations. I also did some projects and presentations stemming from my expertise as a carer and volunteer worker. This role changed during the Covid lockdowns, which eventually meant the end of my temporary contract.
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Keywords: problem solving, cooperation, information organisation, multimedia, C17, C++17, UML
Employee
Sep 2006 – Dec 2013 · 7 yrs
Wageningen University & Research
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These were multiple roles during my studies and candidature period. Roles were larger in the dean’s office and Computechnion (computer building), and smaller roles were in the university greenhouses and chemistry laboratories:
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• At the dean's office I handled presentations and practical student support (i.a. “Handicap+Studie”).
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• I advised in introducing new media and tools in video, handicap-friendly software and hardware.
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• I improved some of the user friendliness of the IT infrastructure at the university.
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• I did some advising and I wrote software for new tools and education.
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Keywords: mentorship, knowledge sharing, attention to detail, optimisation, MATLAB/Simulink, C++11, networking
Finance staff
May 2006 – Aug 2006
TJONGER SHIPPING BV
Production worker
Mar 2005 – Sep 2005
V.O.F. Fa. J. Kooy en zoon
Warehouse worker
Jun 2004 – Aug 2004
Comello B.V.
Skills
Data Science & Analytics
R&D, HPC, Wiskunde, bioinformatica, Wetenschappelijke berekeningen, Optimalisering, Onderzoek, High Performance Computing (HPC), Kwantitatieve analyses, Performance tuning, Systeemanalyse, Algoritme-ontwerp, Algoritmen, Science, technology, engineering, and mathematics (STEM), Data-engineering, Kwantitatief onderzoek, Statistieken, Statistiek, Systeemprestaties, Systeemkunde, Levenswetenschappen, Wiskundige modellen, Informatica, Computerwetenschappen
Backend Development
Software Engineering, Softwareontwikkeling, C++, C, Fortran, Assembly, PYTHON, x64 assembly, HLSL, GLSL, x86 assembly, ARM64 assembly, Applicatieontwikkeling, Rendering, Engineering, Programmeren, Debugging, Geïntegreerd systeem, Object-Oriented Programming (OOP)
Tools & Software
Documentatie, Software, Softwaredocumentatie, Github, Git, Version Control (Git), Technical Documentation, Technische Documentatie, Windows, GIS
Soft Skills & Leadership
Oog voor detail, Organisatorische vaardigheden, Probleemoplossing, Analytisch denkvermogen, Oplossen van problemen, Creatief oplossen van problemen, Frans, Engels, Innovatie
Testing & QA
Kwaliteitscontrole software, Beoordeling van de code, Handmatig testen, Test Driven Development (TDD), Software testing, Software Testen
Project Management & Agile
Software Project Management, Projectmanagement, Agile, Jira
Cloud & Infrastructure
Informatietechnologie, Automatisering, Linux, ICT
Software Design
Softwaredesign creëren, Ontwerppatroon, Systeemontwerp
DevOps & CI/CD
DevOps, Docker, Continuous Integration and Continuous Delivery (CI/CD)
Networking & Systems
Network Configuration, Lage Latentie
Research & Development
Research
Business Transformation
innovatiemanagement
Databases & Storage
Databases
Education & Training
Nederlands
Embedded & IoT
Embedded
Design & UX
Architectuur
Certificates
Rijbewijs B
My hot take on my field...
Is dat AI van mij prima een hele set met taken mag overnemen, daarentegen laat ik mij zeker niet zomaar overbodig maken in mijn specialismen.
Personal Qualities
Detailgericht
Ensures precision in project specifications and code quality, leading to robust software solutions that meet stringent performance and reliability standards.
Zelfstandig
Drives innovative technology solutions independently, ensuring alignment with organizational goals while fostering a culture of autonomy within the development team.
Leiderschapsgericht
Inspires teams to innovate and collaborate effectively, fostering a culture of accountability and excellence in technology development.
Leergericht
Fosters a culture of continuous improvement by actively seeking out new knowledge and integrating innovative solutions into technology strategies.
Analytisch
Evaluates complex technical challenges through data-driven insights, ensuring innovative solutions align with strategic business objectives.
Availability & Preferences
Contract type
Employed
Work arrangement
On-Site, Hybrid, Remote
Region
Zuidplas, Netherlands
My secret weapon at work is...
IQ brengt me verder soms dan wat ik van tevoren ooit dacht, vaak op verrassende manieren in een moment van inspiratie.
Education
Master of Science - MS · Wageningen University & Research · 2011 – 2014
Bachelor of Science - BS · Wageningen University & Research · 2006 – 2010
Pre-university education (VWO) · J.C. Pleysierschool
Licenses & Certificates
Rijbewijs B
Languages
Duits, Basic
Engels, Fluent
Frans, Professional
Dutch, Native
Why anonymous?

Jan-Willem is exploring opportunities confidentially through TotaMatch. We only share information relevant for an initial assessment here. Upon mutual interest, a personal introduction with full name, portfolio, and contact information will follow.
Contact Jan-Willem
Jan-Willem remains anonymous until there is mutual interest. TotaMatch will check if they are open to an introduction. No obligations, no waiting times longer than 48 hours.