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Christophe GremmingerCG

Christophe Gremminger

Product & System Designer | BI, SaaS & Management

€660/day
Karlsruhe, DE
3-7 years
System Design
Product Design
Design System
Dashboards
UI/UX

Average response time: 1 hour

Freelancer profile translated to English.
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About Christophe

Complex data-driven productsrarely fail due to a lack of data. What's often missing is a clear structure that meaningfully connects business logic, KPI systems, workflows, and user guidance.

As a freelance **Product & System Designer**, I help companies create precisely this structure.
My focus: digital product systems for analytics, management, and operational control – in BI contexts, SaaS products, and internal tools.

Domain Experience
Automotive Analytics · Maritime Management · Artificial Intelligence · AgriTech · CRM Solutions · Creative Services · Corporate Communication · Venture Capital.
Automotive OEM
Digital and IT Services
IoT (Internet of Things)
Agriculture and Forestry
Software Publishing

  • German

    Native or bilingual

  • English

    Fluent

Can work on-site
Karlsruhe (up to 30km), München (up to 30km), Frankfurt am Main (up to 30km), Berlin (up to 30km), Stuttgart (up to 30km)

Experience

  • Anonymisierter Kunde
    Early-Stage SaaS: System Modeling & UX – Operational B2B Product (NDA)
    INTERNET OF THINGS (IOT)
    March 2024 - December 2024 (9 months)
    Context
    Product with variable states, configurable rules, and complex dependencies.

    Contribution
    • Development of a modular rule and logic model
    • Structuring of state- and role-based dependency logics
    • Conception of configurable control mechanisms
    • Support from discovery to design implementation

    Impact
    • Manageable control of complex state and rule constellations in the operational system
    • Predictable system behavior even with variable configuration
    • Reduced interface fragmentation through component-based structuring
    User Interface Design System Design User Experience Design Product Design
  • Anonymisierter Kunde
    Enterprise (DAX-40): Usability-Driven Modernization of an Internal Analytics Ecosystem (NDA)
    AUTOMOBILE
    July 2023 - March 2026 (2 years and 8 months)
    Context
    Complex internal analytics and decision-making platform with multiple BI solutions, standalone applications, data sources, and organizational dependencies.

    Contribution
    • Structural analysis and visualization of existing data and system landscapes
    • Development of consistent cross-app navigation and interaction principles for the internal app store and multiple product lines
    • Identification and quantification of key user problems through combined surveys, interviews, and operational usage data analysis
    • Cross-functional standardization of visual system components across multiple application groups
    • Coordination with analytics, product, and technology leads

    Impact
    • Higher transparency in system behavior and KPI dependencies
    • Improved decision-making capabilities for operational users
    • Reduced structural inconsistencies
    BI User Experience Design User Interface Design System Design Usability Testing
  • Anonymisierter Kunde
    Early-Stage: MVP Foundation: Corporate Design, Screen System, and Prototypes (NDA)
    TRAVEL AND TOURISM
    October 2021 - February 2022 (4 months)
    München, Germany
    Context
    Early product phase of a digital product offering with a high demand for consistent user guidance, clear offering logic, and a scalable visual system as a foundation for further screens and features.

    Contribution
    • Design of a consistent corporate and UI foundation, including typographical and visual system rules, as well as reusable components and layout principles.
    • Conception and design of several central screens along the customer journey (Discovery → Detail → Purchase), including defined interaction patterns, states, and content hierarchies.
    • Building clickable prototypes for validating flow logic, information architecture, and UI behavior, as well as coordinating the designs as a robust basis for further implementation steps.

    Impact
    • Clear, consistent product and interface foundation that enables early feature and screen expansion without visual fragmentation.
    • Faster alignment and decision-making processes through prototypically tested user flows and comprehensible interaction logic.
    • Reusable components and layout principles as a scalable basis for future releases.
    Corporate Design User Interface Design User Experience Design UI/UX User Flows
Check out Christophe's experience

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Education

  • Interactive Media Systems M.A.
    Technical University of Applied Sciences, Augsburg, Germany
    2019

Skill set

User Testing and Usability Testing
IBCS
System Modeling
UX Architecture
Interaction Models
UX Audits
Power BI
Data Visualization
BI Usability
Design Tokens
End-to-End
Technical Feasibility & Performance (Web)
Big Data
User Experience Design
User Interface Design

Categories