Available from August 2026

Senior Software
Developer

30+ years of experience in software development, architecture and technology consulting. Specializing in .NET, Vue.js, Angular and modern AI-assisted development.

30+
Years Experience
6+
Enterprise Clients
Full
Stack Developer
AI
Coding Skills
Services

What I can do for you

Software Development

ASP.NET Core, .NET MAUI, Vue.js, Angular, Ionic/Capacitor. Quick integration into existing systems.

Database Applications

SQL Server, Oracle, database design, software integration, browser-based visualizations.

AI-Assisted Development

Modern software development with Claude Code, Cursor and Codex. AI-powered workflows for higher productivity.

Technology Consulting

Architecture, technical concepts, sub-project management. Project delivery in English and German.

References

Trusted by leading companies

Mr. Sönnichsen supported us outstandingly across a wide variety of projects. His broad know-how allowed him to contribute in many ways — development, consulting, training, code review, and problem resolution.

Mr. Sönnichsen independently familiarized himself with new areas of responsibility in the shortest time and helped the respective projects reach a successful conclusion.

Through his open, communicative, and professional demeanor, Mr. Sönnichsen earned high regard within the project team and was exceptionally valued.

Profile

Qualifications

IT Experience since
1995
Focus Areas
Software Development, Technology Consulting, Architecture, Domain Driven Design (DDD), Technical Concepts, Sub-project Management
Programming Languages
C#, TypeScript, JavaScript
Frameworks
.NET MAUI, ASP.NET Core, Vue.js, Angular, Ionic / Capacitor
Databases
SQL Server, Oracle
AI Tools
Claude Code, Cursor, Codex
Source Control
Git
Soft Skills
Teamwork, Creativity, Flexibility, Communication, Organization, Pragmatism
Languages
English, Swedish, German (native)
Contact

Ready for your project?

Let's discuss your project.

Dipl.-Ing. (FH) Sven Sönnichsen

Königskinderweg 153a · 22457 Hamburg, Germany