Independent software practice · Switzerland
Often all three. The root cause is the same: the wrong architecture. I build the other kind. on AWS, with proof you can see on a live dashboard. Founded and led by Istvan Kappelmayer, 30+ years in software.
Available for new engagements, remote or on-site across Switzerland.
Consent banners block GA until users click Accept. Most don't. Privacy plugins reject automatically. Safari and Firefox block by default. AI crawlers like ChatGPT and Claude never appear in GA at all.
Server-side logs, no consent needed.
CloudFront logs every request, before any JavaScript runs. No cookies, no banner, no plugin to block. AI crawlers, mobile users, privacy-conscious buyers: all visible on a live dashboard.
Plugin vulnerabilities. Admin logins brute-forced. Themes out of date. A hack means SEO penalty, FADP reporting duty for customer data, days of recovery, real reputation damage for a Treuhänder or law firm.
Nothing to hack, because nothing is running.
Static HTML at the edge. No server to patch, no plugins to exploit, no admin login to brute-force. CloudFront in front, DDoS-protected by default.
See the evidence: BACS, Patchstack, Wordfence →Fixed hosting fees. Plugin licenses. Maintenance contracts. And when traffic actually spikes, like a PR mention or a tender phase, the site slows down or falls over.
Pay per request. Cents when quiet, more when busy.
Serverless on AWS. A typical KMU site costs a few francs a month, often less. Zero traffic costs zero. A traffic spike scales automatically without falling over.
Same root cause, same fix. Here is what you can actually build on that foundation.
Most clients start with the visibility offering, which proves the architecture works for their case. From there, the same system grows into a customer portal, a SaaS product, or full back-office automation. One supplier, one architecture, growing with you.
I build, host, and continuously optimize your website to be found, in Google search and across AI engines like ChatGPT, Claude, Perplexity, and Gemini. You see exactly how each one interacts with the site on a live dashboard, available 24/7. Bot-hits from GPTBot, ClaudeBot, PerplexityBot, Bingbot, Googlebot, broken down by page, with deltas over time. I do not promise specific rankings or citations. Nobody honestly can. I promise visibility, transparency, and ongoing work.
When your clients keep asking you for things they should be able to see themselves, you have outgrown email. Documents, status, invoices, history, all in one place, behind a proper login. Built on the same serverless foundation as the website. If you already have a visibility site with me, the portal extends it.
A custom SaaS foundation, fixed price, fixed timeline. Login, billing, multi-tenant data, customer portal, observability, CI/CD. Where the product calls for it, AI components like document understanding, RAG-based search, or agent workflows are part of the build. Eight weeks to your first paying customer. Built on AWS, no idle costs.
Routine business work, automated and operated by us. AI-powered document intake, offer generation, customer support triage, RAG-based internal knowledge bases. We design it, build it, and run it for you on a monthly retainer. You get the outcome without managing a tool.
Live · since November 2025
A FADP-compliant Swiss cybersecurity SaaS, designed and shipped end-to-end by K-I-Soft. Live in AWS Zurich since November 2025. Five months in production, zero auth-session bugs.
scmc.ch →Live · 2026
A senior-friendly site for local IT service in Bern and surroundings. Designed, built, and shipped by K-I-Soft. Computer help, Digital Signage, and device maintenance. Also K-I-Soft's go-to partner for hands-on local IT.
tec-support.ch →Archived · shipped 2024
A neighborhood rental marketplace shipped end-to-end in 2024: iOS and Android apps, AWS serverless backend, Apple Pay and Google Pay. Technically complete, no users. The cold-start lesson is on the blog.
Read the lesson →The tools and AWS services I use to design, build, and ship. Battle-tested in production, picked for longevity not hype.
AWS & Infrastructure
Backend
Frontend
Delivery & AI
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. Not a consultant who talks about architecture. An architect who ships it.
Most recently, I built SCMC.ch end-to-end, a production Swiss SaaS platform running in AWS eu-central-2 since November 2025. AWS infrastructure as code, Lambda backend (Quarkus Native on GraalVM), DynamoDB, Cognito, Vue 3 frontend, GitHub Actions delivery. It's live, it works, and it's proof of what K-I-Soft can deliver on AWS.
I work independently through K-I-Soft. I take on a limited number of engagements at a time, because I don't do half measures. No large teams, no account managers, no handoffs. You work directly with me. Fluent in German and English.
No large teams, no account managers, no handoffs. You work directly with me.
30 minutes. You tell me what you're building or where you're stuck. I tell you honestly if I can help.
A clear, written scope of work. Fixed deliverables, timeline, and price. No surprises.
I design, build, and review, depending on the engagement. Weekly updates. Direct Threema, Teams, or Slack access.
Clean documentation, knowledge transfer to your team. You own everything. No lock-in.
For retainer offers. We keep it operating: monthly improvements, on-call response, observability. You stop maintaining it, we do.
If yours isn't here, just ask on the call.
Depends what you start with.
Visibility-with-proof website: Setup CHF 2'500 to CHF 15'000 depending on size, retainer CHF 600 to CHF 1'200 per month.
Customer portal: Setup from CHF 12'000, retainer from CHF 1'500 per month.
SaaS in 8 weeks: CHF 35'000 fixed.
Back-office on autopilot: Build + Run retainer, quoted per case.
AWS Health Check (standalone): CHF 12'000 fixed, two weeks.
Day rates between CHF 1'200 and CHF 1'600 for architecture work outside these packages.
Exact quote after the discovery call.
Yes. I take on subcontracts for AWS partner consultancies that need a senior architect on a specific mandate. K-I-Soft invoices your company; your client never sees the hand-off. I've worked this model before.
Switzerland, focus on DACH. Personal collaboration matters to me, so regular on-site exchange and a direct view of the running project are part of how I work. Remote where the project allows.
SCMC.ch is live and publicly accessible, my most recent end-to-end build. Full career history is on my LinkedIn profile. Happy to discuss specifics on a call.
German and English, fluently, both written and verbal. I've worked with teams across Switzerland, Germany, the US, and Hungary.
Yes, Claude and GitHub Copilot in daily work. But I review, understand, and own every line. 30 years of engineering instinct is what catches the mistakes AI still makes. That's what you're paying for, not the typing.
Yes, as a standalone two-week audit, fixed price, separate from the build-then-retain solutions above. Architecture review against the Well-Architected pillars (cost, security, reliability, operational excellence, performance), written report, prioritized findings, 90-day roadmap. Often pays for itself in the first month from cost savings. CHF 12'000 fixed. Ask on the call if this fits.
I take on a limited number of engagements at a time. If you have a project worth building, book a 30-minute call and I'll tell you honestly if I can help.
info@k-i-soft.ch · +41 77 955 55 73 · LinkedIn
I respond within 24 hours on business days.