Things I've built
Client work first: web apps, internal tools and AWS platforms for companies from startups to Roche. Below that, the products I build myself. Running my own products taught me to think like a founder, not only like a contractor.
Freelance Projects
Client work and consulting engagements8 projects
Decadia
AWS Landing Zone with Control Tower & Identity Center, centralized CloudWatch observability, and a fullstack React app with a Hono REST API hosting Bedrock AgentCore agents.
freelanceongoing
Roche
Fullstack documentation and tracking solution to handle customer interaction, built on Lambda, API Gateway, RDS, and a Hono REST API.
freelanceongoing
Control Mechatronics
Controlling web application for automated reports based on ERP data — UI design, S3/Lambda data import, and a Remix + PostgreSQL frontend.
freelance2025 – 2026completedRead the client reference →
Telix / Lightpoint Surgical
Image processing pipeline for long-running tasks on Step Functions and ECS, plus a CLI that streams CloudWatch logs for async job invocations.
freelancecompleted
Klotter
Greenfield project management software for the internal manufacturing process, with ERP data integration and SSO via Cognito + Microsoft Entra ID.
freelance2025completedRead the client reference →
Michelberger Digital
Lambda and infrastructure cost optimization, a high-scale SQS + Lambda event system with multi-tenant architecture, CDK Sandbox for per-dev deploys, and custom Shopify app development.
freelancecompleted
Project 33
Built Signal Tool — an internal product giving customers insights into their LinkedIn leads.
freelancecompleted
ADS Steuerberatung
Web application for consulting clients of a German tax consultancy, including a relationship system for financial planning clients.
freelance2021completed
Side Projects & Indie Hacking
My own products, apps, and experiments11 projects
Virtual try-on Shopify app for apparel stores. Shoppers upload a photo and see the clothing on themselves. Made and hosted in Germany.
pluginongoingShopify app helping merchants combine and merge orders to reduce shipping costs. Automatically identifies mergeable orders.
pluginongoingShopify fraud detection app helping 150+ customers fight fraud and chargebacks with custom rules to automatically block suspicious orders.
pluginongoingBook, full web application in CDK and Terraform, and 6+ hours of video content about CloudWatch. Teaches all CloudWatch features.
bookongoingEbook & infographics teaching the essential AWS services with many real-world examples. A go-to resource for AWS learning.
bookongoingAnalytics solution for GitHub Actions. Understand which actions and repositories are most expensive. Exited due to time constraints.
SaaSexitedFigma plugin to add cloud icons from Azure, AWS, and GCP to your designs. Exited because no intention of monetization.
pluginexitedSubscriber analytics for the newsletter platform Kit (former ConvertKit). Understand your audience and grow your business.
SaaSstoppedDeveloper tool for asynchronous processing of tasks with a simple HTTP API. No need for complicated message queue setups.
SaaSstoppedSearch and reminder tool for Twitter/X Audio Spaces. Stopped because there was no payment intent for a tool like this.
SaaSstoppedMobile app for iOS and Android to understand your investments. Available in the German market with over 2,000 users. Stopped due to lack of financial traction in B2C.
appstopped
