Freelancer profile translated to English.

Description

For 10 years, I have been supporting teams in implementing cloud-based products stably, securely, and scalably, with a particular focus on Azure, Identity & Access, and a comprehensive engineering approach (API-First, DevSecOps, Observability). My strength lies in combining architecture and hands-on delivery: I can structure complex requirements, translate them into clean interfaces, and then implement them myself, pragmatically, testably, and maintainably.

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Companies where "Anonym" is listed are large corporations where I have worked on identity systems, among other things. Unfortunately, due to contractual and security reasons, I cannot disclose these names. The other company has allowed me to use screenshots of the app, but not to mention the name.

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What I often work on

Identity platforms (B2B/B2C) with Entra ID / Azure AD B2C, token flows, role/permission concepts, data protection, and deletion processes.

Cloud Backends & Integrations with Azure Functions, API Management, Key Vault, SQL/Cosmos, Monitoring via Application Insights / OpenTelemetry

Modern Web Stacks with TypeScript (React/Next.js/NestJS) and .NET (ASP.NET Core / .NET Aspire)

Mobile (Android) with Kotlin & Jetpack Compose, Offline-First, Background Sync, and Real-time Communication (e.g., gRPC)

AI Integration (newer focuses)

I integrate LLM functions into existing systems, from intelligent assistants to agent workflows (Agent-to-Agent) and MCP-based tool integrations. I pay particular attention to governance, security boundaries, telemetry, and clean API encapsulation so that AI features fit reliably into productive environments.

How I work

Clear Definition of Done, short written coordination, clean technical documentation, and continuous quality assurance (tests, linting, security checks). I prefer efficient, asynchronous collaboration with fast feedback loops.

Industry field of expertise

Languages

German
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

Anonym (50 Mitarbeiter)
AI Integration
November 2025 - January 2026 (2 months)
The client wanted to integrate an Agent 2 Agent Service with access to an MCP Server and various tools, including the ability to send emails or search the company's internal database for customer data. The LLM from OpenAI in the Azure Cloud was used. Among other things, orchestrator, durable task, agent chaining, agentic loop (ReAct), and polling were integrated to correctly check/manage the status of requests.

Activities:
▪ Architecture
▪ Development
▪ Definition of MCP Tools
▪ Definition of Agents

Technology / Frameworks:
▪ C#, .NET
▪ Azure AI OpenAI
▪ Model Context Protocol
▪ Durable Task
▪ Docker
▪ JsonRPC2.0
MCP Azure Cloud Agentic AI Orchestrator JsonRPC
Anonym (150 Mitarbeiter)
Android App for Garbage Truck
March 2025 - November 2025 (8 months)
An Android mobile app is designed and developed to connect an IoT device in a vehicle. Data is exchanged in real-time via gRPC and processed on the device. Simultaneously, there is an Offline-First approach, and the mobile app synchronizes data to a cloud platform in the background.

Login is done via MSAL. For this purpose, the admin portal was created beforehand in this project. Access is checked and verified via the JWT token.

A mock server was programmed for development, which subsequently served as the basis for another team that built the IoT device based on the mock.

Activities:
▪ Architecture
▪ Development
▪ Definition of Interfaces
▪ Building Android App Team for Future Developments (Training Internal Team)
▪ Coordination with the Client and IoT Manufacturer on Technical Requirements

Technology / Frameworks:
▪ Android with Jetpack Compose and Kotlin
▪ Room
▪ Hilt
▪ Retrofit
▪ Android Jetpack (Architecture)
▪ gRPC
Kotlin Serverless Room Hilt Jetpack Compose
Anonym (150 Mitarbeiter)
Architecture and Setup of an Admin Portal
PUBLIC SECTOR
October 2024 - March 2025 (5 months)
Planning and implementation of the Managed Identity System. The platform is intended to grant users access to a native Android app in the subsequent project. For details on the Android app, please read the following project. In this project, we created the complex database using Entity Framework. We had to implement a role system with dependencies on roles, departments, and more, as requested by the client.

Activities:
▪ Planning architecture with the client
▪ Development
▪ Optimization
▪ Consulting

Technology / Frameworks:
▪ Azure Active Directory B2B & B2C, Azure Functions, Azure API Management, CosmosDB, Applications Insights, KeyVault, MS SQL, Azure Web Applications, Blob Storage, and others
▪ C#, .NET Core, ASP Core, Entity Framework Core, JavaScript, jQuery, HTML, CSS
▪ Visual Studio 2019, Azure DevOps
Azure Cloud Serverless Entity Framework Core Azure API Management CIAM