Dr. Jannis Fischer

Founder & CEO

Jannis studied physics at FU and HU Berlin with exchanges to ETH Zurich, University of California Los Angeles, and CERN. During his PhD at ETH Zurich, he worked on the development of SAFIR, a small animal PET system with unprecedented temporal resolution. BPET (a SAFIR spin-off) started in 2017 with the grant of an ETH Pioneer Fellowship to Max and Jannis. Since then other awards have followed, e.g. VentureKick and Forbes Europe 30 under 30.

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Dr. Max Ahnen

Founder & COO

After studying physics at the TU Munich, the Max Planck Institute for Physics, and Durham University, Max became a PhD student on gamma-ray Cherenkov telescopes at the ETH Zurich Institute for Particle Physics. Upon finishing his PhD, Max, together with Jannis, was awarded the 2017 ETH Pioneer Fellowship for the Brain PET Project. VentureKick and Forbes Europe 30 under 30 followed.

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Dr. Ilaria Sacco

Chief Technology Officer

Ilaria brings a decade of experience in designing electronics hardware and sensors readout circuits for medical imaging instrumentation, robotics surgical devices and particle detectors. She studied Aerospace Engineering in at the University of Pisa. During her PhD at Heidelberg University she contributed to the microelectronics development of the PETA6-microchip for application in Positron Emission Tomography. PETA6 demonstrated unprecedented performance, in particular in TOF. Ilaria continued her career in electronics systems and PET systems development with stations at Stanford University  and in different companies. Illaria joined our team in April 2022 and is our Chief Technology Officer.

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Dr. Stefan Bircher

Chief Commercial Officer

Stefan received his PhD in Human Movement Sciences and Physiology. He brings 20+ years’ experience with companies specialized in robotics and healthcare technologies in the areas of product management, general management and sales & marketing with focus of go-to-market activities for international operations. Stefan joined our team in June of 2021 and is our Chief Commercial Officer.

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Dr. Ekaterina Mikhaylova

Imaging Lead

Ekaterina earned her Ph.D. in Physics with an emphasis on Medical Imaging from the Institute for High Energy Physics of Barcelona in Spain. After finishing the doctoral studies Ekaterina joined the MEDISIP group at University of Ghent as a postdoctoral researcher. From 2016 to 2019 she continued her career in the field of Medical Imaging at the University of California, Davis. In 2020 Ekaterina joined Positrigo as a Nuclear Medical Imaging Research Lead.

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Juan Manuel Streb, PDEng

Head of Software

Juan, electrical engineer and software engineer by training, completed his formal education in software technology with a PDEng from TUe (Eindhoven, NL) in 2011. While working in companies in Argentina, the Netherlands, and Switzerland he always stayed close to the hardware. He accumulated years of experience on hardware-software systems and their architecture. In 2020 Juan joined Positrigo as a software developer – detector system lead. In summer 2021, Juan became our Head of Software Development.

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Alon Dolev

Senior Full-Stack SWE and SW Architect

Alon completed studying Computer Science at TU Delft and EPF Lausanne in 2014. Since then he has been working as polyglot Software Developer in various companies. Alon joined our team in the beginning of 2021 as Full Stack Software Engineer and is now Team Leader Control Systems.

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Dr. Patrick Wespi

Staff Full-Stack SW Engineer

Patrick joined our team in winter 2021 as a Software Engineer – Front End in the control systems team. He has previously worked on web platforms for wearable biosensors, and on MRI image database software for researchers. He has a PhD in Biomedical Engineering from ETH Zurich, and has studied Physics at EPFL and ETH Zürich. At Positrigo he is in charge of the development of user interfaces.

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Dr. Markus Jehl

Staff SW Engineer & Reconstruction R&D Lead

Markus studied Biomedical Engineering at ETH Zurich and earned his PhD in computational electrical impedance tomography from the University College London in 2016. Since then he worked in research and development of computer/stereo vision, 3D modelling, and algorithms. In December 2021 he joined Positrigo as a Software Engineer –  Tomographic Image Reconstruction.

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Diego Stohrer

CARAQA Leader

Diego started in winter 2021/22 as CARAQA leader with us at Positrigo. He holds a Bachelor and Master of Science in Health Sciences from ETH Zurich and previously graduated as experienced laboratory technician at Novartis. In 2021, Diego gained first hands-on experience in regulatory affairs and quality affairs management in an internship at a medical device startup. Currently Diego further specialized in this field with in a CAS course on CARAQA at FHNW.

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Veronika Badinska

Administrative Assistant

Veronika joined our team in January 2023, after having worked for several years within hotel industry and for various companies in office administration in Spain, London and Switzerland. She is responsible for the office administration at Positrigo.

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Raphael Herklotz

Production

After finishing his apprenticeship as an Automation Technician EFZ at libs, Raphael was able to gain experience in Development & Maintenance at Dectris, where he undertook various infrastructure projects. Since the beginning of 2023, Raphael has been a part of the production team at Positrigo.

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Philipp Fritz

Mechanical Engineer

Philipp is a mechanical engineer with a background in biomedical engineering, having worked before on a device to measure the electrical signals of cells and a capsule robot designed for the use in the gastrointestinal environment of the human body. He holds an MSc in mechanical engineering from ETH Zurich with a specialization on biomedical engineering and micro/nano systems. Since his start in the Winter of 2023, he has been a part of the research and development team at Positrigo.

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Daniela Häner

CARAQA Manager

Daniela started in Winter 2023/2024 as CARAQA Manager with us at Positrigo. She has previously gained 4+ years of experience as a (Senior) Quality Assurance Engineer in a global medical technology company. She holds a Bachelor and Master of Science in Health Sciences and Technology from ETH Zurich.

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Stefan Iwainsky

Senior Mechanical Engineer

Stefan brings 20 years of mechanical engineering experience, of which 15 years in development and industrialization of medical and laboratory devices. He is an expert in Solidworks and PDM-data management and joined us in February 2024.

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Eelke Stokman

Head of Technical Service

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Sebastian Hertli

Head of Industrialization and Production

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Keyvan Farhang Razi

Electrical Engineer

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Dr. Jan Debus

System Engineer

Jan studied physics at Heidelberg University, focusing on statistical analysis and computational methods. He earned his PhD at ETH’s institute for particle physics and astrophysics by completing the final step of the SAFIR project, gaining comprehensive knowledge over all facets of PET detector development. Following the completion of his PhD, he joined our team as a System Engineer in June 2025.

Elias Werner

El. Eng./Student

Elias finished his apprenticeship in Electronics EFZ from ETH Zurich in 2018. He was a key worker also for the BPET project in the group of Prof. Dissertori, with diverse tasks in firmware and electronics design and development. He continuously improved his education and was awarded the Swiss Berufsmaturität in 2020, which allowed him to start studying Electrical Engineering at ETH Zurich in the winter semester of 2020. Elias started as electrical engineer working student in 2020.

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Sandro Schickli

El. Eng./Student

Sandro finished his apprenticeship in Electronics EFZ from ETH Zurich in 2016 and continued working in the engineers pool of the ETH Zurich Institute for Particle Physics until 2017 where he contributed significantly to PET detector electronics development. In 2019 he achieved the Swiss Matura. He is studying Physics at ETH Zurich since winter semester 2019 and started as electrical engineer working student in Positrigo in 2020.

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