MeshChat
Off-grid, end-to-end encrypted chat over a Bluetooth + local-network mesh (ECDH + AES-GCM, multi-hop relay).
.NET MAUI · C#
About
Software engineer since 2016, with 7 years in .NET back-end development. I design and deliver reliable, scalable and secure back-end services — REST APIs, integrations and microservices — in .NET 8 / C#.
Also a trainer: I taught JavaScript & React to career-changers at IT School.
Experience
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Jan 2026 — present
Senior .NET Engineer — Independent Contractor
Factory-flow management platform for a German industrial manufacturer.
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Feb 2022 — Nov 2025
Senior Software Engineer — ING Bank
Corporate banking platform; monolith-to-microservices migration.
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Mar 2021 — May 2022
Senior Software Engineer — Canon Production Printing
CRM for print shops.
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Sep 2019 — Mar 2021
Application Developer — Cloud Innovations
Early engineer (one of ~15–20) at a fintech product startup; sole developer of a public cryptocurrency trading platform.
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May 2016 — Jul 2019
Web Application Developer — Deventure
One of the first 10 employees at a software-services startup; led .NET web projects, Linux deployments, mentoring.
Projects
Sakana Sushi
Full-stack sushi ordering app: React 18, ASP.NET Core 8, MongoDB, JWT auth, Docker Compose.
React · ASP.NET Core 8 · MongoDB
TCG Ranking Tracker
Ranking & statistics tracker for the One Piece TCG.
Next.js · TypeScript
Open Source
testcontainers-dotnet ~4k★
Contributor to Testcontainers for .NET — authored two new container modules:
- DuckDb module under review
- ZooKeeper module under review
Skills
- C# / .NET 8
- ASP.NET Core
- Entity Framework
- SQL Server
- Elasticsearch
- Redis
- Neo4j
- Kafka
- RabbitMQ
- Azure Service Bus
- OAuth 2.0 / OIDC
- Docker
- Kubernetes
- OpenShift
- Helm
- Azure DevOps
- OpenTelemetry
- xUnit
- TypeScript
- React
- Next.js