lars@rog.ski
.NET Engineer
2 open slots for 2026
I build production-ready .NET software.
10+ years professional experience
Building apps that solve real problems, inspire change, and improve lives.
Located in Germany, available worldwide.
lars@rog.ski
.NET Engineer
2 open slots for December
I build production-ready .NET software.
10+ years professional experience
Building apps that solve real problems, inspire change, and improve lives.
Located in Germany, available worldwide.
Work
Real-world AI applications built with .NET
Mindspace: daily affirmations
AI-powered audio sessions for affirmations, meditation...
Mindspace: daily affirmations
AI-powered audio sessions for affirmations, meditation...
VLOKK
A platform for sharing authentic short-form vlogs with th...
VLOKK
A platform for sharing authentic short-form vlogs with th...
My services
Here’s how I can help bring your vision to life:
.NET Development
As a freelance .NET developer, I help teams build and extend production-ready software with modern AI capabilities.
Strategy & Consulting
I support teams as a external .NET developer, working directly in existing codebases on backend services, APIs, and business logic. • ASP.NET Core & C# • Clean architecture & maintainable code • Collaboration with in-house teams
AI Features
I design and implement AI features that integrate seamlessly into existing .NET applications — not prototypes, but real products. • Semantic Kernel & LLM orchestration • OpenAI / Azure OpenAI integration • Secure, scalable, production-ready AI
.NET Development
As a freelance .NET developer, I help teams build and extend production-ready software with modern AI capabilities.
Strategy & Consulting
I support teams as a external .NET developer, working directly in existing codebases on backend services, APIs, and business logic. • ASP.NET Core & C# • Clean architecture & maintainable code • Collaboration with in-house teams
AI Features
I design and implement AI features that integrate seamlessly into existing .NET applications — not prototypes, but real products. • Semantic Kernel & LLM orchestration • OpenAI / Azure OpenAI integration • Secure, scalable, production-ready AI
My toolkit,
your advantage
See how my expertise with these tools drives better results.
Backend & APIs
ASP.NET Core · REST APIs · Auth · Jobs
90%
Backend & APIs
ASP.NET Core · REST APIs · Auth · Jobs
90%
Mobile Development
Swift · iOS Apps · API-driven UI
70%
Mobile Development
Swift · iOS Apps · API-driven UI
70%
Data & Infra
Azure · Cloud Architecture · CI/CD · Observability
60%
Data & Infra
Azure · Cloud Architecture · CI/CD · Observability
60%
AI & LLM
GPT-4 · Semantic Kernel · Prompt & Tooling
50%
AI & LLM
GPT-4 · Semantic Kernel · Prompt & Tooling
50%
2026
2026
2022
2016
2013
2010
1997
My journey through engeneering
Explore the milestones and experiences that have shaped my career, year by year.
Freelance Software Developer
Self-employed
2026
Freelance Software Developer
Self-employed
2026
App Development Full Stack
Indie Developer
2022
App Development Full Stack
Indie Developer
2022
Software Developer
DATEV eG
2016
Software Developer
DATEV eG
2016
Apprentice Software Developer (IHK)
DATEV eG
2013 – 2016
Apprentice Software Developer (IHK)
DATEV eG
2013 – 2016
10
Years of experience
in software industry.
FAQ
What services do you offer?
I work as a freelance software developer specializing in .NET backend development and AI integrations. This includes ASP.NET Core APIs, cloud architectures, and production-ready AI features using LLMs (OpenAI / Azure OpenAI, Semantic Kernel).
How do we start working together?
We start with a short call to understand your requirements and define scope and availability. After that, I can usually start within a few days, either on a short-term task or as part of a longer engagement.
How do you charge for your work?
I work hourly, with transparent time tracking and regular updates. This keeps things flexible and works well for evolving products, existing codebases, and long-term collaborations.
Do you work remotely and with international teams?
Yes. I work fully remote and collaborate with teams across different time zones. Most of my work is B2B, integrating directly into existing teams, workflows, and toolchains.
Do you only work on AI projects?
No. AI is a focus, but I also work on core backend systems, APIs, refactoring, and infrastructure. AI features are built on top of solid engineering fundamentals.
Do you have any other questions?
What services do you offer?
I work as a freelance software developer specializing in .NET backend development and AI integrations. This includes ASP.NET Core APIs, cloud architectures, and production-ready AI features using LLMs (OpenAI / Azure OpenAI, Semantic Kernel).
How do we start working together?
We start with a short call to understand your requirements and define scope and availability. After that, I can usually start within a few days, either on a short-term task or as part of a longer engagement.
How do you charge for your work?
I work hourly, with transparent time tracking and regular updates. This keeps things flexible and works well for evolving products, existing codebases, and long-term collaborations.
Do you work remotely and with international teams?
Yes. I work fully remote and collaborate with teams across different time zones. Most of my work is B2B, integrating directly into existing teams, workflows, and toolchains.
Do you only work on AI projects?
No. AI is a focus, but I also work on core backend systems, APIs, refactoring, and infrastructure. AI features are built on top of solid engineering fundamentals.
Do you have any other questions?
