From practice, for practice — publications born directly from therapeutic experience.
Psychologist. Former Microsoft security expert. Published author. And the very therapist who used to spend his evenings writing invoices. I wanted to do therapy, not administration. So I built TimeInvoicer.
From practice, for practice — publications born directly from therapeutic experience.
My career didn't begin in a therapy room, but at one of the world's largest technology companies: At Microsoft in Munich, I was responsible for enterprise support, managing thousands of servers worldwide. I learned what it means when systems fail, when data is at stake — and what it takes to prevent that from happening.
After that, I moved to Vienna in a management role, where I was responsible for the security and support of major enterprise customers across Austria. Banks. Insurance companies. Corporations. Organizations where a data breach wouldn't just be inconvenient — it would be existential.
In the corporate world, I saw every day what pressure, overwork, and constant availability do to people. Burnout wasn't an abstract diagnosis — it was the faces of my colleagues.
At some point, the question became unavoidable: Do I want to keep being part of the system that burns people out? Or do I want to become part of the solution?
When I started my practice, I faced the same problem as thousands of colleagues: Administration eats the time that should belong to patients. Writing invoices, looking up insurance billing codes, exporting data — all after an already intense day.
But I had something most therapists don't: decades of experience in software development and IT security. So I built TimeInvoicer — not as an exercise, not as a startup idea, but because I needed a solution I could trust with my patients' data.
The rare combination of therapeutic empathy and technical precision.
Years of responsibility for enterprise security at Microsoft. Thousands of servers. Major clients. The experience that data protection isn't a feature — it's a mindset.
Clinical psychologist, psychotherapist, and hypnopsychotherapist in private practice. I don't just understand how software works — I understand what you need in your practice.
Professional books that come directly from clinical practice — for therapists, coaches, and those affected.
TimeInvoicer is not the product of an anonymous software corporation. It is the tool of a colleague who does the same work as you — and who wants you to spend your time on what you set out to do: helping people.
Three principles that guide every decision at TimeInvoicer.
Every feature must make the app simpler, not more complex. If something takes more than 3 taps, we rethink it.
Invoices, reports, time confirmations, fee calculations, payment reminders, and much more. Everything is derived from your calendars. This guarantees your security and saves you from additional data maintenance.
Smart automation replaces manual input and handles routine tasks. It doesn't add complexity — it takes it away.
Developed in Lower Austria. For psychologists, psychotherapists, psychiatrists, and other therapists.
Developed under the leadership of a psychologist and psychotherapist.
Quality through automated testing. Every change is verified before it ships.
No tracking, no ads, no mandatory cloud. Your patient data never leaves your device.
Built with the know-how from years of Microsoft enterprise support. Security architecture at corporate level.
Questions, feedback, feature requests — I'd love to hear from you. Personally.
Questions, ideas, or feedback? I reply personally — because I care that TimeInvoicer works for you.
Write to me →