Marius Müller

Director Product, Data & AI
Frankfurt am Main

I work where commercial goals meet technology. My job is to make sure both sides mean the same thing, and that a decision comes out at the end.

Get in touch LinkedIn

What I do

Career

  • since November 2025

    Director Product, Data & AI

    Roast Market GmbH, Frankfurt

    Member of the management team. Leading a cross-functional unit covering BI, data science, product data and product management. Co-leading the modernisation of the tech stack together with the Director IT. Responsible for company-wide AI adoption.

  • May 2024 to November 2025

    Head of Commercial Steering and Product

    Roast Market GmbH, Frankfurt

    Commercial steering of the business across pricing, assortment and promotion strategy. Led the product team at the interface of business and technology.

  • June 2023 to March 2024

    VP of Growth

    Les Lunes GmbH, Berlin

    Extended the growth organisation to up to 25 people across digital marketing, e-commerce and marketplaces. Accountable for revenue, return rates and marketing efficiency.

  • January 2022 to June 2023

    Head of Growth

    Les Lunes GmbH, Berlin

    Built a department of up to 17 people. Scaled performance marketing, influencer programmes and retention. Platform expansion to Zalando, About You and Douglas.

  • August 2020 to December 2021

    Country Head DACH

    Les Lunes GmbH, Berlin

    Led DACH marketing. Repositioned influencer marketing into a channel with clear metrics.

  • January 2020 to July 2020

    Freelancing management consultant

    Frankfurt

    Focus on data analysis and reporting.

  • January 2020 to May 2020

    Founder

    Own startup, Frankfurt

    Self-service platform for roundtrip travel. Working MVP ready for go-live, including technology partnership and operational setup. Operations were halted because of Covid-19.

  • May 2016 to January 2020

    Associate Consultant and Consultant

    Simon-Kucher & Partners, Frankfurt

    Pricing, marketing and sales strategy projects across industries and markets, including B2B automotive, manufacturing, B2C, insurance and travel. Built tools in Excel, SQL and VBA to automate reporting and calculation.

  • October 2012 to September 2015

    Dual student, industrial engineering

    BorgWarner Turbo Systems, Kirchheimbolanden

Marius Müller in conversation, black and white photograph

Education

What I stand for

I am an industrial engineer. That shapes how I work. I want to understand how things connect before I change them, and I want to be able to measure afterwards whether it made a difference.

Decisions need a basis

Most organisations are not short of data. They are short of analysis that actually changes a decision. So I am not interested in how many dashboards exist, but in which question they answer. A report nobody uses to decide something can go.

Business and engineering need someone who speaks both languages

Commercial people and developers rarely fail on competence. They fail on language. I have stood between the two for years: I understand contribution margins and unit economics, and I understand why a migration takes three months. Without that translation, investments drain away in misunderstandings.

Recurring manual work is an unsolved problem

If someone copies data for two hours every Monday, that is not a task. It is a task that was never finished. I do not automate for its own sake or to cut jobs, but so that capable people work on the questions they were hired for.

I still build

Consulting taught me to write concepts. Founding a company taught me that a concept without a running prototype says very little. So I keep writing scripts, building automations and data models. You can only lead technology you understand.

What I enjoy most is the point where an organisation switches from gut feeling to evidence and gets faster rather than slower.

MAMU

MAMU is my incubator. It is the umbrella for the ideas I pursue alongside my role as a manager: a travel platform, marketplace analytics, data consulting and today automation.

MAMU is also the legal entity, the company behind me and behind Scriptorix. What started as a collection point for my own projects is now the structure through which consulting and product development run.

The projects build on each other. First the travel platform with AI-supported advice, then marketplace data analysis, then consulting on data and automation. Scriptorix bundles that experience into one offering today.

Projects

Let's talk

Whether it is an exchange about product and data organisations, a specific role or an automation project in a mid-sized company: write to me.

marius@mmueller.online

LinkedIn

For automation and AI projects: Scriptorix