Security, cryptography and AI. From architecture to working implementation.
Developer, infrastructure specialist and solution architect. I work where security, cryptography and AI meet: from the policy on paper to the configuration running in production. I set up and led the quantum programme at ABN AMRO; today, with EONCORE, my focus is post-quantum cryptography. I speak at events and run training sessions, for the boardroom and for engineers alike. No-nonsense, and always with one question in mind: what needs to change tomorrow.
An inventory of the cryptography in your landscape: protocols, algorithms, key lengths and certificates. Then a migration path to ML-KEM and ML-DSA, hybrid where needed, with crypto agility as an architectural requirement. Data intercepted today can be decrypted later; that is why migration starts now.
Co-inventor of the ABN AMRO patent Orchestrated quantum key distribution: key distribution in which terminals authenticate to a quantum identity provider and register their location with a quantum location service provider. Before that, QKD project lead at ABN AMRO in the collaboration with QuTech.
Baselines and guidelines aligned with the framework you need to comply with: classification, approved algorithms, key management and certificate lifecycle. Concrete enough for an engineer to act on.
Security review of architecture, infrastructure and code: TLS configuration, authentication and authorisation, token handling, network segmentation, firewalls, IDS and IPS. Prioritised findings with a fix, not a report that ends up in a drawer.
On behalf of the Quantum Gateway Foundation I work on knowledge sharing around post-quantum cryptography. The PQC Navigator is a guide through the cryptographic landscape, from algorithm selection to migration strategy.
LLM applications and agents that run inside existing processes and systems: integration with your data and tooling, evaluation of the output, and an architecture that stays manageable.
AI systems bring their own attack surface. Analysis of what a model or agent is allowed to see and do, where data goes, and which dependencies you pull in.
I built the ABN AMRO quantum programme from the ground up: convinced management, selected the right knowledge partners and set up the first projects, including DisQover with QuSoft. I announced the two-year partnership with QuSoft at the Quantum Tech conference in Boston. Other companies have used the programme as a model for their own start.
Involved in the UvA, CWI and QuSoft innovation hub for quantum software and applications, as Quantum Finance Expert and external support. Speaker at meetups and events on what companies get out of quantum projects today.
Games that make quantum concepts tangible. Qomposer: a puzzle game in which you build quantum circuits, with levels, a playground and a designer. Tiq Taq Toe: tic-tac-toe with superposition. Quantum Realm: the Minecraft minigame by the UvA Faculty of Science and Fun Creators, in which you solve eight quantum puzzles to escape. Originator and project manager. Downloaded more than 500,000 times. And more.
On post-quantum cryptography, security and AI. Technically grounded without losing the room: what the risk is, what it costs, and where to start now. Including a keynote at Curaçao Quantum Safe (2025) and convenor of the ITCILO masterclass Quantum Readiness for the World of Work in Turin.
For management that has to decide and for engineers who have to build it. Post-quantum migration, cryptography in practice, and working safely with AI. Hands-on wherever possible.
Quantum Thinking is a standalone training I deliver at ITCILO in Turin. In 2026 also at the Quantum Summer School, and in November 2026 in Curaçao with the Curaçao Quantum Safe Foundation.
Your question and organisation translated into an architecture that fits, and that can actually be built and operated.
Backend, frontend and infrastructure as code. Building it myself where that is faster than explaining it.
Broad knowledge of OS, networking, security and development, so the root cause is found and fixed quickly.
At EONCORE we build post-quantum cryptography software and run cryptographic assessments: know which cryptography is running, remove the weak parts, and make existing systems quantum-safe today.
A mail client that speaks plain IMAP and SMTP, on the address you already have, and seals outgoing mail so the mail server cannot read it. Hybrid encryption with ML-KEM and X25519, signing with ML-DSA and Ed25519. Alongside ordinary mail: Confidential Mail, which never leaves unencrypted, and Discrete Mail, an always-encrypted chat-style conversation. No account, no licence.
Automatically finds the cryptography in your landscape (TLS, SSH, IPsec, OpenVPN) and flags weak algorithms and misconfigurations. Passive, zero downtime, with exportable compliance evidence.
Upgrades existing TLS connections to hybrid post-quantum without changing application code. Protected today, while the real migration runs at your own pace.