Applied AI
I work on LLM applications, retrieval systems, document search, and agents that fit into existing workflows.
CTO at eMentalist Vienna, Austria
I’m Patrick, CTO at eMentalist in Vienna. Most days I’m somewhere between product questions, architecture, code, and a whiteboard.

From hands-on data science to CTO
Usually from the first prototype onward
Architecture, code reviews, and testing
01 / What I do
The exact balance changes from project to project. These are the areas I spend most of my time on.
I work on LLM applications, retrieval systems, document search, and agents that fit into existing workflows.
Much of my earlier work focused on statistical modelling, predictive maintenance, anomaly detection, and time-series data.
Architecture, technical strategy, team leadership, and the practical trade-offs involved in shipping and maintaining software.
02 / Selected work
Not case studies—just a short overview of the kinds of problems that tend to land on my desk.
Extracting key details, searching clauses, and comparing contracts, versions, and supplements.
Agents that work with documents, business data, APIs, and existing algorithms to carry out multi-step tasks.
Classifying documents, extracting and checking data, and comparing information across contracts, invoices, and reports.
Using sensor and operational data to spot anomalies, estimate failure risk, and help teams decide what to inspect.
03 / How I work
Get clear on the problem, the people involved, and the decision that needs to improve.
Compare possible approaches and choose one that fits the actual constraints.
Prototype, test, implement, and connect it to the surrounding software.
Watch how it behaves, fix what breaks, and improve it with real feedback.
04 / About
I’ve been at eMentalist since 2017, moving from hands-on data science and engineering into the CTO role.
I lead a multidisciplinary team and help set our technical direction. I’m still involved in the day-to-day work: talking with customers, drawing up architectures, reviewing implementations, testing ideas, and helping with the difficult bits when something reaches production.
I’ve worked across real estate, industrial IoT, energy, the public sector, hospitality, communications, and document-heavy business processes. I enjoy the point where a new domain starts to make sense and the technical problem becomes concrete.
05 / Contact
If you’d like to compare notes, ask about something here, or just get in touch, email me.
[email protected]