About us
K-I-Soft, an independent Swiss software practice
K-I-Soft IT&Holding GmbH is an independent Swiss software practice. We build and run customer portals and SaaS foundations: documents, status and invoices behind a login, attached to the site you already have, and the same foundation later carries internal workflows and automation. Built serverless on AWS, and the data sits in Switzerland.
How we work
You work directly with the senior architect who also builds, from the first call to handover. For larger projects we bring in vetted specialists; responsibility and the senior lead stay in one hand. A few engagements at a time, weekly updates, a direct line via Threema, Teams or Slack.
What we build with
We build serverless on AWS, as the default. Infrastructure as code so everything stays reproducible, and the data sits in Switzerland (AWS Zurich, eu-central-2). Typical stack: Lambda for the backend, DynamoDB for data, Cognito for login, CloudFront in front of a static frontend, delivery via GitHub Actions. The same foundation carries a website just as well as a customer portal or a full SaaS.
Selected work
- Regiowerber.ch, self-service local advertising: small businesses book individual screens by the day, built by us, live since September 2026.
- SCMC.ch, a production Swiss cybersecurity SaaS, built end-to-end, live in AWS Zurich since November 2025.
- Quartiero, our own product: touch screens in stairwells, device software and a serverless backend, live since July 2026.
- VendoSwiss, a bilingual product site with a product catalogue and a serverless contact backend, live since June 2026.
- Stahlpartner.ch, a bilingual site for contract metal manufacturing, with a serverless request backend, live since July 2026.
- Kitti Kovacs Garden Design, a rebuild of a garden designer's site in Surrey, England, off WordPress and onto Astro, live since October 2026.
- Rentaside, a neighbourhood rental marketplace with iOS and Android apps.
What matters to us
What a portal costs is fixed before you sign, and the sketch is yours, even if you build elsewhere afterwards. After handover, code, infrastructure and documentation belong to you. Senior-led from day one, without the agency overhead.
Leadership
I've been writing software for over 30 years, from early enterprise systems to modern serverless SaaS on AWS. Four countries, dozens of projects, one constant: I build the things I design.
I built SCMC.ch end-to-end, a production Swiss SaaS platform running in AWS eu-central-2 since November 2025. Since July 2026 Quartiero has been live, our own product: touch screens in stairwells, from the device software to the serverless backend. AWS infrastructure as code, Lambda backend (Quarkus Native on GraalVM), DynamoDB, Cognito, Vue 3 frontend, GitHub Actions delivery. Both are live, they work, and they are proof of what K-I-Soft can deliver on AWS.
On the side I keep a personal notebook, nothing technical, just private thoughts on money, family and photography: notes.kappelmayer.ch.