Open to opportunities

Karsten Kerber

@karstenkerber

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CTO and Lead Software Developer at Doctos GmbH, building a healthcare SaaS platform with AI speech processing.

Germany

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At Doctos GmbH, I’m responsible for the technology behind a production SaaS platform for dental practices. I led the implementation of its backend, migrated the platform to STACKIT, and integrated Azure Speech Service for transcription and structured data extraction.

I’ve also built Flutter applications and partner integrations, including a C# RPA application connecting product output to dental practice management software. Earlier, I developed healthcare applications at marpinion GmbH + minnt GmbH and worked on Flutter development and migrations as a freelancer.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Developer + CTO

Current

Doctos GmbH

May 2023 - Present (3 years 6 months)

Technical lead and later CTO of a production healthcare SaaS platform for dental practices, overseeing architecture across app, backend, database, infrastructure, AI services, CMS, partner integrations, and RPA. Led backend implementation, cloud migration to STACKIT, and team leadership including hiring and mentoring.

Go Flutter Python fastAPI PostgreSQL Kubernetes STACKIT Azure AI Speech C#.NET Redis RabbitMQ REST APIs Docker CI CD Infrastructure as Code Swift C++Robotic Process Automation Healthcare SaaS

Current

Software Developer

Current

Freelancer

Aug 2022 - Present (4 years 3 months)

Led Flutter app development and migration projects, including migrating a Xamarin app with 30,000+ active users to Flutter. Built mobile features for healthcare and consumer applications and supported clients in modernizing legacy systems.

Flutter Xamarin Mobile Development Migration Healthcare Consumer Apps

Software Developer

marpinion GmbH + minnt GmbH

Feb 2018 - Jul 2022 (4 years 5 months)

Developed and maintained healthcare applications for physicians and pharmacists using Xamarin, Angular, C#, and WCF services. Built backend logic, CMS features, and integrations, and supported modernization of infrastructure and workflows using Microsoft Azure.

Xamarin Angular C#WCF Azure Healthcare CMS Backend Development