About

Johannes Herrmann - Fullstack developer / AI Engineer / Founder based in Sweden

Hey! I’m Johannes, I help build exceptional products, companies and engineering teams. I founded and am currently at Arro as CTO. I live on the beautiful west coast of Sweden. When I am not coding or building companies, I get nerdy about cooking and how nutrition and lifestyle changes can help us live a long and healthy life without chronic diseases.

You can find me on Twitter, LinkedIn and Github.

Skills and Expertise

I have over a decade experience in building fullstack web applications mostly in B2B SaaS with Typescript, React and Svelte. I have also build large consumer-grade and cross-platform mobile experiences with Flutter. As part of my work in web apps, I have setup DevOps infrastructure with Kubernetes, Docker and IaC solutions such as Pulumi on all major cloud providers AWS, Google Cloud Platform, Azure and Cloudflare.

For the past 2 years I have focused on building out our AI engineering stack at Arro. We have built a multi-layered Agent architecture that uses Large Language Models and communications over an event-based system.

I have had the opportunity to work with amazing startup engineering teams, such as Typelane (acquired by Whippy), Avy and Prototyp.

I have co-founded two startups Airinum (ecommerce health tech) and Arro (B2B SaaS for customer resarch).