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Marvin DeutzMD

Marvin Deutz

Frontend Developer & Creative Technologist

€480/day
Berlin, DE
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marvin

A good website can't just be measured by loading time, conversion, or clean code. It has to feel right: understandable, precise, and fitting for the company it represents.

I develop individual websites and Shopify stores with a special focus on interaction, motion, and user guidance. I don't use animations as a decorative effect, but rather derive interactions from the respective business model, content, and goals of the website.

As a Creative Developer, I work at the intersection of design and technology. I translate visual concepts into performant, responsive, and maintainable frontends, and also assist with technical conception, information architecture, prototyping, and CMS integration where needed.

Projects where design should not only be implemented but also technically re-imagined are a particularly good fit.
  • German

    Native or bilingual

  • English

    Fluent

Can work on-site
Berlin (up to 50km), Aachen (up to 50km)

Experience

  • Deutz & Krüger
    Creative Developer & Web Developer
    DIGITAL AND IT
    March 2026 - Today (4 months)
    Berlin, Germany
    Conception and technical implementation of individual marketing websites and Shopify stores for companies and brands. My focus is on interaction-rich frontends, animations, clear user guidance, and clean, maintainable technical implementation.

    My responsibilities include technical conception, prototyping, development of responsive frontends, integration of headless CMS and e-commerce systems, and the implementation of complex interactions and visual states. I work closely with design, translating visual concepts into performant, accessible, and long-term maintainable websites.

    Depending on the project, I also assist with information architecture, content structure, technical consulting, deployment, and further development.
    Headless CMS Typescript Interaction Design Frontend Development Shopify
  • BL thermodynamics
    Frontend Development & Technical Conception
    MECHANICAL ENGINEERING
    May 2025 - September 2025 (4 months)
    Aachen, Germany
    Conception and technical implementation of a new corporate presence for BL thermodynamics. The goal was to convey complex technical content in an understandable, visually concise, and modern way.

    My focus was on frontend development, technical prototyping, and the implementation of interactive elements. This included an interactive key visual to represent technical heat exchanger systems, as well as the development of animations, state changes, and user interactions.

    The website was implemented with a modern frontend and headless CMS. Additionally, I was involved in information architecture, user guidance, and the technical structuring of content.
    Frontend Development Headless CMS Interaction Design Technical Conception Next.js
  • KamikuraTCG
    Shopify Development & E-Commerce Conception
    E-COMMERCE
    March 2026 - May 2026 (2 months)
    Graz, Austria
    Conception and technical implementation of a Shopify store for an international retailer of trading cards and accessories. The focus was on clear information architecture, a scalable product structure, and intuitive navigation across different franchises, product types, and target groups.

    My responsibilities included developing the product data model with Shopify metafields, conceiving categories, collections, and merchandising structures, as well as the technical implementation and customization of the theme. Additionally, I developed processes for cleaning and migrating existing product data from WooCommerce to Shopify.

    In close coordination with the client, I also worked on user guidance, shop structure, visual presentation, and the technical requirements for international sales.
    Shopify E-Commerce Shopify Themes Data Migration Information Architecture

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Education

  • Fullstack Web Developer
    Digital Career Institute
    2024

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