Micha Mailänder

Founder & Open-Source Developer

Etesie · since Dec 2024 Convex Champion

I help people become creators.

My goal is to empower others to build confidently — whether its a product, a business, or simply the next step toward their own ideas.
Right now, I'm doing that through Etesie and the Convex ecosystem — building self-hosted auth, billing, and design tools that teams can truly own.

Open Source

164+

GitHub Stars

4,046+

Weekly Downloads

231

Figma Hearts

6,200+

Figma Users

My Story

I've always been driven by one simple idea: helping people become creators so they can solve real problems — for themselves, their friends, and their communities.

In 2019 we founded Dechea, a practice management app for dentists. Our first feature was a calendar — and we failed. Coming from backend development, we didn't know CSS well enough to make even a basic layout. Hiring frontend developers didn't fix it either; without knowing the craft, we couldn't recognize good design work.

So we learned — painfully. We tried UI libraries like Material, Chakra, Mantine… powerful, but they always looked like someone else's product — never truly ours. In the end, we built our own design system. It took months — but it finally gave us visual consistency and confidence.

Then came auth. We needed multi-organization support, privacy, and self-hosting — so we explored everything from Keycloak to Clerk. Some were too complex, others too restrictive or expensive. Most didn't feel like our brand. And handing off user data to third parties felt wrong.

That's when I realized we need an auth and design foundation that teams can truly own — something that's self-hosted, beautiful, and ready in minutes.

That's why I started Etesie: to give developers and designers full control over their auth and UI, without vendor lock-in — so they can focus on what really matters: creating products that help people thrive.

In January 2026 I became a Convex Champion — and today I maintain five open-source packages that form the foundation of the Svelte + Convex ecosystem: from auth adapters and billing to the Svelte client itself.

Experience

Founder
Etesie

Building the open-source foundation for Svelte + Convex: self-owned auth widgets, billing integration, and the Svelte client. Complemented by a design system with theme tooling and Figma kits (6,200+ users). Convex Champion since January 2026.

Product vision and strategy, open-source ecosystem development, architecture decisions, design system strategy, community engagement

Dec 2024 - Present

Founder
Plancreator

Plancreator transforms the classic business plan into a living masterplan for companies. Instead of static PDFs, it creates an always up-to-date, consistent picture of strategy, target audiences, costs, revenue models, risks, and decision-making foundations — as a shared language for founders, investors, and partners.

Overall responsibility for vision and product, conception of model and methodology, software development, architecture and technical implementation

May 2024 - Present

CEO & Co-Founder
Dechea

Medical software enabling dentists to plan treatments in less than two minutes.

Responsibility for product strategy, software architecture and toolchain, technical leadership, mentoring and development of the engineering team

Aug 2020 - May 2024

Project Lead
BMW

Connected Drive – BMW's infotainment system. Billing & Payment team (via doubleSlash).

Leading and steering an agile team of 15 people, ensuring product quality, responsibility for budget and project success (€2.5M annually)

Jan 2019 - Jul 2020

Project Lead Assistant
BMW

Connected Drive – BMW's infotainment system. Billing & Payment team (via doubleSlash).

Supporting team leadership and coaching of a 15-person team, responsibility for quality assurance and operational execution

Apr 2017 - Dec 2018

Software Developer
doubleSlash

Internal and customer-specific software solutions.

Development of a continuous delivery toolchain, building automated tests, creating training documentation, implementing customer-specific requirements

Sep 2016 - Mar 2017

IT Specialist Apprenticeship
doubleSlash

Vocational training in software development.

Development and maintenance of applications, fundamentals of software architecture, collaboration on customer and internal projects

Sep 2013 - Aug 2016

Secondary School
Graf-Soden-Realschule Friedrichshafen

Secondary education with intermediate school certificate.

Until Jul 2013

Let's connect

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