Karsten Kerber

Full-Stack & Backend Development

• Developed backend systems with Python/FastAPI and C#/.NET for a healthcare SaaS product used by dental practices

• Built REST APIs, data models, integrations, and workflows for documentation, billing, and practice-management features
• Worked hands-on across backend, frontend, mobile, infrastructure, and automation

IT Infrastructure & Architecture

• Planned and led a modern IT infrastructure, including database design, API structures, integrations, deployments, and operations
• Designed and maintained complex PostgreSQL database structures
• Led the migration from a self-hosted setup to a Kubernetes production environment on STACKIT
• Worked with Docker deployments, CI/CD workflows, and production processes

Speech Recognition & AI

• Integrated Azure Speech Service into a voice-based documentation and billing application for dental practices
• Implemented pre- and post-processing of audio data to improve transcription quality
• Reduced speech recognition error rates to below 5%
• Built AI-driven workflows that transform spoken input into structured documentation and billing output

App & Web Development

• Developed a modular Flutter application with native packages for iOS using Swift and Windows using C++
• Built and maintained internal CMS functionality and admin tools with Angular
• Contributed to features across mobile, web, backend, and API layers

Robotic Process Automation

• Enhanced a C#-based RPA application for automating Windows applications and manual workflows

• Improved automation logic, reliability, and maintainability

Technical Leadership

• Shaped the technical roadmap, software architecture, and development priorities
• Organized development processes using Scrum and Kanban
• Recruited, onboarded, and mentored developers
• Provided code reviews, technical guidance, and performance feedback
• Managed priorities, timelines, and delivery in a fast-moving startup environment

• Developed and maintained hybrid apps with Xamarin for medical professionals (physicians, pharmacists)
• Built WCF Web Services and backend logic
• Created and maintained an Angular-based CMS
• Modernized IT infrastructure by migrating to Microsoft Azure (DevOps)

• Continued development of a sports-focused Flutter app, introducing new features and optimizing performance
• Refactored a native Android/iOS "Family and Groups Organizer" app to Flutter
• Established a new developer mobile team, defining processes for continuous development cycles and ensuring streamlined collaboration