We make the invisible

...data at the heart of decision making
for smart green cities


...is to push environmental data into the mainstream of decision-making and to unlock unlimited clean air for cities, businesses and citizens. Hawa Dawa aims to make the invisible visible: we form the first link of a new digital knowledge network to steer and activate resilient and decarbonised cities.

Our international team comprises engineers, software and data analysts, sensor, satellite and traffic modelling experts as well as business folk and is  committed to realising this vision. Together we are pushing the frontiers of machine learning and sensor technologies to produce innovative new data products and services for our customers.


We are a highly specialised international team, experts in both data modelling and analysis and hardware development

We offer a full service to help our customers navigate through and apply our environmental data

We are a young and agile team challenging the status quo through a new commodity of environmental data


Karim Tarraf

Karim is CEO and Managing Director of Hawa Dawa, responsible for leading the overall vision and developing our core business activities with partners.

Yvonne Rusche

Yvonne is CFO and HR lead at Hawa Dawa, responsible for finance and controlling as well as for recruiting, team development and strategic planning.

Janina Stork

as Head of Sales, Janina manages relations with our key accounts, partners and customers and is responsible for new business development and bringing new products to the market.

Cassi Welling

as Chief Operating Officer Cassi leads on translating our business into efficient daily operations, supporting our manufacturing  activities, business development, project management, fundraising & planning.

Barbara Loferer

As Head of Marketing & Communications, Barbara manages communications with Hawa Dawa's audiences. Drawing on her comprehensive B2B marketing experience, her strategic approach helps foster the brand 'Hawa Dawa'

Sofía Ramírez

Sofía works at the interface between our Business and Hardware Team. She has an interdisciplinary background and is part of the TUM Hyperloop Team participating in the SpaceX Hyperloop Competition.

Dimitri Kamelin

Dimitri is Market Research & Sales Assistant and supports the business team in improving the value for our customers.


Matt Fullerton

Matt is a Co-founder and responsible for all software development at Hawa Dawa, having worked previously in image processing, traffic modelling, open data sources and sensor communication.

Birgit Fullerton

Birgit (PhD) is responsible for Data Science at Hawa Dawa. She has a PhD in neuroscience and carries many years of work experience in health sciences and epidemiological research.

José Levya

José is a senior backend software developer at Hawa Dawa. He is finalizing his PhD at the Centre for Mathematical Philosophy (LMU) and brings several years of experience in the fields of computability and knowledge representation.

Johannes Langer

Johannes is a software developer focused on our machine learning work. He has a Bachelors Degree in Physics and a Statistics Masters with a specialism in Recurrent Neural Networks.

Stefanie Schrader

Stefanie supports as an external advisor in the field of air quality modeling and integration of satellite data. She has a PhD in atmospheric sciences from KIT and worked for several years in the field of satellite earth observation in the German Aerospace Center (DLR).

Max Huber

Max is currently completing his Bachelor’s degree in Geosciences at the MLU-Halle and supports the software team as a working student in the fields of remote sensing and GIS.

Carl Lange

is a software developer and long-distance walker (toughsoles.ie). Originally working in computer games, Carl was lead developer on Ireland's award winning Open Data platform, with experience in neural networks, image processing, and data visualization.


John Dziersk

John is our Head of Hardware Development, responsible for scaling our hardware capabilities and taking our technology to a new level. He brings a wealth of experience and in-depth knowledge of sensor development from his background in industrial IoT.

Agni Biswas

Agni is a hardware developer with strong competencies in product development, prototyping and process automisation. He has a Bachelors in Mechatronics Engineering with a focus on commodity sensing for air quality monitoring.

Sajjad Soomro

Sajjad has a Bachelors degree in Electrical Engineering from the National University of Sciences and Technology (NUST), Pakistan and is currently completing a Masters in Power Engineering at the Technical Univeristy of Munich.  He has gained experience of working in power stations in Pakistan and has a background in renewable energy design. 

Sophia Schmid

Sophia studies environmental engineering at the Technical University of Munich and supports the hardware team as a student trainee in the field of measurement and documentation of electrical sensor circuits and programming.