About Us

We love Finance, Technology and Excel which enables us to help financial institutions making the most out of their growth ambitions. We have experience in gradually migrating away from Excel based tools to a full blown Python and web based IT infrastructure, thereby automating everything, from trading with Bloomberg or Interactive Brokers to fully automated build and deployment pipelines.

We are a small and fully remote team which enables us to focus on the work we do in an efficient environment that is fully aligned with our style of work. To compensate the remote work, we regularly meet in person somewhere in the world for an intense week of discussions, fun and coding (the famous "Zoomer Retreats"). We also have experience in working with additional contractors if required by the project size.


Felix Zumstein, CEO Project Manager, Testing (QA), Continuous Integration/Deployment

Felix is responsible for project management, testing (QA) and everything around release management and documentation. This includes the setup and maintenance of VMs, databases and fully automated Continuous Integration/Deployment pipelines with Docker containers. He is also the creator of xlwings, our popular open-source Python package that replaces Excel VBA with Python. Previously, he was a director at UBS Global Asset Management in Zurich where he was responsible for building an in-house system to analyze and optimize the strategic asset allocation of institutional and private clients. He holds a Master’s degree in Finance and Economics from the University of St. Gallen (HSG) and is a CFA charterholder. Felix is based in Zürich, Switzerland.

Bjoern Stiel, CTO Backend Architect, Python developer and Celery Specialist

Bjoern is responsible for backend development with Python including Bloomberg automation. He's the inventor of xltrail, our solution for versioning and diffing Excel files. He is also the author of the popular blog python-celery.com, where he showcases his expert know-how about Python's most popular asynchronous task queue. Previously, he worked as a commodities trader and quant analyst/developer at UBS Investment Bank in London. At UBS, he was responsible for building the risk management platform for the UBS CMCI commodity index and building custom commodity trading strategies. Bjoern holds a Master's degree in Economics from the Freie Universitaet Berlin and a Master's degree in Financial Engineering from Birkbeck College, University of London. Bjoern is based in London, UK.

Pablo Mouzo Frontend Guru and Python Developer

Pablo is responsible for frontend development. While working with us, he has gone through a few iterations of frontend frameworks. His current favorite is Vue.js, but he previously worked with React and Angular. Pablo is the creator of socket.io-gateway , an open-source solution that allows to easily communicate with realtime frontends via REST API. Before specializing in frontend development, Pablo was focusing on Django, Python's most popular web framework. He has a background in a variety of industries, from banking and legal to farming and e-commerce. Pablo is based in Buenos Aires, Argentina.