I design and ship small, focused apps that run on your own device. Most of them work fully offline; the AI features are optional and use a key you bring yourself. No accounts, no telemetry, no backend collecting your data.
I'm a full-stack engineer who builds end-to-end: mobile and desktop apps, web platforms, on-device and bring-your-own-key AI, and the self-hosted infrastructure behind them. I care about software that respects the people using it — local-first, transparent about what leaves the device, and pleasant to use.
Before focusing on my own apps I spent years building Web3 and AI systems for companies and teams — smart contracts, backends, devops and AI integration. That background still shows up in the apps.
Alongside the apps I offer generative-AI consulting and implementation through Leinss Consulting — helping German Mittelstand and service companies put LLMs to work: customer-service chatbots, knowledge-base assistants, and process automation. If that's a fit, let's talk.
Lead Dev., UI (Farcaster Frames), backend (telegram bot, AI for extraction, summarization and generation, data pipelines), software architect, devOps eng.
Among others:
match making
Implementation of a match making mechanism for event participants, e.g. for conferences or meetups based on their public social media presences. Profiling participants through data & AI pipelines and matching similar participants with algorithms.
DevOps Eng. in the Ethereum & Cosmos ecosystem. Automation tools in Golang & Rust.
reporting tool
Implementation of a financial reporting tool of all past transactions in a certain episode for the Ethereum & Cosmos ecosystem written in Rust.
automation tooling
Implementation of a restaking, governance and balance & stake alerting system for the Cosmos ecosystem written in Golang.
Questions about an app, an invite to a beta, or a consulting project? Reach out by email or find me on the networks below.