About PROTOS

After studying in Berlin and London, specializing in ICT management and software development, Sebastian Ullrich worked as a research assistant at the Institute of Electronic Business e.V. He led numerous projects for financial service providers and transportation companies in the areas of online process optimization and IT implementation.

From 2010 to 2012, Sebastian Ullrich was the managing partner of Asperado GmbH, a startup specializing in Software as a Service marketplaces.

Until 2016, Sebastian Ullrich worked as a business consultant for various large corporations in the Business Technology division of Capgemini Deutschland GmbH.

Since 2000, Andreas Sass has enjoyed a professional career as a project manager in numerous IT and digitalization projects for corporations and medium-sized businesses such as Lufthansa, E.ON, Bayer, Beiersdorf, and TÜV Süd. From 2009 to 2016, he also worked as a business analyst in the M&A sector, playing a key role in the mergers of PIA Performance Interactive Alliance and UDG United Digital Group.

His areas of expertise included the strategic development and expansion of companies, the acquisition and preparation of mergers, and project management in cloud and IT infrastructure projects. Concurrently, Andreas Sass completed a part-time Master's degree in Leadership in Digital Communication at the Berlin University of the Arts and the University of St. Gallen, graduating with distinction.

Since 2019, Karsten Quellec has been working at PROTOS Technologie GmbH as a Senior Cloud Architect, DevOps Engineer, and Security Engineer, with a clear focus on AWS Web Services. In this role, he leads the strategic planning and technical implementation of demanding infrastructure and application migrations, application modernization projects, and security audits using cloud services.

His expertise also extends to the transformation of applications to cloud-native solutions, where he relies on microservices and serverless services. By integrating agile workflows based on the DevSecOps approach, Karsten Quellec promotes seamless collaboration between development, security, and operations. His expertise and experience contribute significantly to fulfilling our mission of guiding companies on their path to sustainable and successful transformation.

As an AWS trainer for TÜV Rheinland and for AWS itself, he not only shares his knowledge but also empowers clients such as T-Systems, Allianz, HDI, Waters, Vodafone, and many more to fully leverage the potential of the cloud.

Prior to joining PROTOS, Karsten Quellec worked as a Senior Consultant and AWS Trainer at tecRacer.