I build high-performance Next.js websites for Swiss SMEs and German mid-market. Direct line to the developer, no account manager, 90+ Lighthouse scores guaranteed.
// Results, not promises
Lighthouse Performance on a live project
faster load times vs. competitors
from inquiry to project kickoff
focus: Stuttgart, Heilbronn, Switzerland
What I Stand For
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
+ Design + Development + Engineering
// Problem → Solution
„I don't have a website yet"
Spark package: online in 2 weeks. Webflow or Next.js, mobile-optimized, GDPR-ready.
„My site is too slow or looks like 2014"
Relaunch with Next.js + Vercel. 90+ Lighthouse, modern design, migration included.
„I want to sell online"
E-commerce with Stripe, Shopify or TWINT. From product to checkout optimization.
„I need a web app or internal tool"
Full-stack build: Next.js + Supabase. Auth, roles, dashboards, realtime data.
„Nobody finds me on Google"
SEO audit, technical optimization and content structure. Visibility, not invisibility.
„Hours of manual processes eat our time"
Automation and internal tools, from CSV imports to AI integration. See below.
// What I master
Mainly Next.js / TypeScript, headless CMS (Contentful/TinaCMS), Supabase backends. Hosted on Vercel's global edge network, GDPR-compliant, 90+ Lighthouse. Stack is a means to an end, not dogma.
Headless CMS or WordPress/Webflow. E-commerce with Stripe, Shopify or Swiss payments (TWINT/PostFinance). Shipped in weeks, no vendor lock-in.
From wireframe to animated interface. Framer Motion, responsive, accessibility-ready. Working with your designers or my own design.
Lighthouse audits, Core Web Vitals, conversion structure, GDPR-compliant analytics. Measurable, not gut feeling.
// How I work
30-min call (English/Deutsch). I listen, ask questions, understand your business. Not just your desired design.
You get a written quote with fixed scope, timeline and transparent flat-rate pricing. No hidden costs.
Development with weekly updates. You see progress on a staging URL, not only at the end.
Go-live incl. SEO, analytics and CMS onboarding. Optional maintenance plan for updates and changes.
Pick your industry. Each cell is a working day. The lit ones are lost to a single recurring task a tool could take over.
Still maintaining listings one by one in Mobile.de, AutoScout and your CRM? Every morning, by hand.
lost to »Inventory upkeep«, done by hand. That's 968 hours a year.
Bound staff time. Your number, not marketing. Against a one-time setup instead of daily manual work.
I build tools like this per industry. See yourself in one? Then let's talk about your process.
Present your processSZN Capital® Platform
David as JokerSZN, CEO SZN Capital®
Transformed financial platform vision into a Next.js powerhouse. Mentored designer in web-first principles while achieving 98/100 Lighthouse score and 40% faster load times than competitors.
"QEM helped our designer level up while delivering exceptional quality!"
SaaS Plattform JRNL.system 823
Dragos, Founder
Co-created minimalist SaaS platform featuring role-based dashboards and real-time analytics. Bridged design-dev gap through interactive prototype sync and weekly alignment sessions.
"Shipped our MVP in 3 weeks with perfect design-code alignment!"
Fixed packages, transparent anchors. The final quote depends on scope.
Fixed quote in € or CHF, based on scope and location.
Essential CMS website for quick online presence
Price based on scope
10-14 days delivery
Custom Next.js solutions for growing businesses
Price based on scope
2-4 weeks delivery
Complex web apps & ongoing collaboration
Price based on scope
4+ weeks delivery
"I am very happy with the results of the website! The design was implemented exactly as I wanted, the work was quick and reliable, and even after completion I continue to receive great support of Qem. Clear Recommendation!"
David as JokerSZN
Engineer - Trader - CEO, SZN Capital
Here are some of the most common questions I receive from my clients