I've built 75+ websites and set up conversion tracking for agencies and businesses in Germany and abroad.
dataLayer.push({
event: "generate_lead",
form_id: "quote",
ad_storage: "granted",
analytics_storage: "granted",
value: [object Object],
});Built With
Websites, the marketing technology behind them, and the systems that keep both running.
New websites and landing pages, maintenance, migrations, and technical SEO for businesses and agencies.
Tag management, data layers, and Consent Mode V2 that fire once, with consent, and Google Ads can bid on.
I use AI for research, code, and automation every day, with guards on anything that changes something live.
Anonymized case studies from tracking, consent, and conversion projects.
Products and articles published without a deploy
Read case studyNo health data sent to Google, bookings measured
Read case studyThe company's main hiring platform, built in-house
Read case studyFive chat channels in one inbox on every phone
Read case studyI'm Sultan Kautsar, a Founder & Engineer focused on web engineering, marketing technology, and AI-native development.
Most of my work is websites, the servers behind them, and the analytics, tracking, and automation that marketing teams depend on.
I pick tools for the problem in front of me and prefer the simplest setup that will keep working. I use AI every day, for research, writing and debugging code, automation, and system design.
What I've learned from real projects, written down so I can find it again.
Next step
Tell me what you have and what you need. I'll usually reply within one working day with how I'd approach it.