Available from December 2026

Marco Praetorius — Websites & CRO · Basel

B2B websites that convert, built faster than you'd expect.

I lead web teams or build the site myself: concept, design and headless build. Conversion optimisation since 2013, analytics since 2008. Since 2025, my AI-assisted process has cut production effort by 45–80 %.

Experience at

Axisbits · IU International University · Finanzcheck · maxdome / ProSiebenSat.1

Portrait of Marco Praetorius

By the numbers

What my AI-assisted process changed

Since 2025 I produce websites with a standardised, AI-assisted process. Effort figures compare these projects with similar ones delivered before. The process keeps getting faster: I built this site in two to three days.

45–80 %

less production effort on comparable websites

6–12 weeks

from kickoff to launch for custom B2B websites, including client feedback rounds

9

website and branding projects launched, 4 more in progress

6 years

of team leadership, at IU Group and Axisbits

Approach

Strategy, design and delivery in one hand

That way nothing gets lost between the concept and the launch.

01

Strategy & concept

Sitemap and section logic are defined before anything is designed. Every page follows a reasoned argument rather than a template.

Proof

Built on SORTED, a CRO framework I developed myself, with ICE prioritisation

02

Delivery & team leadership

Reusable building blocks, clear sign-off steps and a distributed design and development team that knows what is decided and what is still open.

Proof

Production effort cut by 45–80 %, 6–12 weeks from kickoff to launch

03

Platform choice

Choosing between headless, WordPress and HubSpot CMS on cost, benefit and risk, so the site fits your team after launch, not just on day one.

Proof

Led the business evaluation of a headless stack (Astro, Sanity, Vercel)

How I work

Strategy before design.Process before pages.Data before opinions.

Selected work

Projects I led since 2025

Four projects in detail, with my role in each. Below: further website projects I led.

Experience

Agency, corporate, university, freelance

Four perspectives on one question: why do people act on a website — or not?

Employed

Axisbits, Zürich
Head of Website Solutions · since March 2025
IU International University
Product Owner CRO & Personalisation · team of up to 12 · 4.5 years
adzLocal
Head of CRO & UX · 7 months
Finanzcheck
UX Research, Design & Conversion Optimisation · 2 years
oncampus
Student assistant

Freelance

onlineconversion
Own CRO & UX consultancy, DE / CH · 2014–2017 and 2024–2025
maxdome / ProSiebenSat.1
Conversion optimisation · 11 months full-time, via onlineconversion
winet · Acceleraid
Landing page · UI optimisation for a personalisation tool
VWO · AB Tasty
Invited speaker: webinar and live presentation
oncampus
EU-funded university project · before onlineconversion

Talks & writing

Expertise you can check in public

Invited by two of the major testing platforms, plus writing on the topics most often underestimated in projects.

Guide · Forms

Forms people actually complete

Three-part series on form optimisation, written in German: number of fields, error messages, button labels and what really triggers drop-offs.

Framework · Concept

SORTED: six questions every page has to answer

Scent, Offer, Reason, Trust, Ease, Drive: the CRO framework I developed myself for audits, page concepts and test priorities, with evidence ratings and ICE.

Talks & certification

VWO

Webinar · experimentation

AB Tasty

Talk · experimentation

CXL

Certified Optimizer, 05/2023 · 90+ hours in conversion, UX and analytics

Contentsquare

Certified, 01/2023

Fraunhofer

Certified Usability Engineer, Fraunhofer Institute FIT, 01/2017

Fair questions

What clients usually ask before we start

Who owns the website?

You do. Code, CMS and hosting run in your own accounts, so you are never locked in. If you prefer, I take care of everything for you.

Is it built from a template?

No. Structure, design and content are made for your audience and your offer. The speed comes from the process and reusable building blocks, not from cutting corners on quality or flexibility.

Does AI do the work?

AI speeds up production. Strategy, page logic and conversion decisions are mine, based on CRO practice since 2013.

How do you make sure it converts?

Most B2B websites have too little traffic for reliable A/B tests. So every page is built on proven conversion patterns and SORTED, the framework I developed for conversion audits, page concepts and test priorities.

What does it cost?

A conversion-focused one-page website starts at CHF 3,000. Larger websites built to generate leads usually cost up to CHF 9,000, depending on scope. You get a quote after a short call.

How long does it take, and how much of my time?

Usually 6 to 12 weeks from kickoff to launch, depending on scope and how quickly feedback comes back. You are involved at a few clear sign-off steps, not in every detail.

Can my team edit the content?

Yes. Your team edits texts, images and pages in the CMS without touching code.

What happens after launch?

Your team can maintain the site, or any developer can take over, because it runs on a standard stack in your own accounts. If you want support from me, I offer packages of hours.

Will we lose our Google rankings?

I set up the redirects myself and make sure existing rankings are kept or improved. Short-term fluctuations after a relaunch are normal until Google has recrawled and re-evaluated the site.

Contact

Email is the fastest way.

For conversations about a role, a project or a talk. I usually reply within one working day.

2 project slots open from December 2026Also open to the right permanent role.