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Florian B.FB

Florian B.

Lead Data Scientist & ML Engineer

€1,250/day
Zürich, CH
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Florian

I help companies make their marketing and sales decisions data-driven and impact-oriented – with solutions that not only sound good on paper but deliver real added value in everyday life.

What sets me apart: I combine technical depth with entrepreneurial thinking. As a Data Science Leader, I develop analysis and machine learning models that are directly integrated into operational processes – and address the exact points where decisions are made.

Whether it's attribution, customer segmentation, conversion forecasting, or causal impact analyses – I don't deliver models in a sandbox, but end-to-end solutions: from data preparation and modeling to dashboards or functional prototypes with Streamlit or React.

I work closely with marketing, product, and management – my goal: less gut feeling, more impact per invested euro.

Some examples from my work:

🎯 Custom Attribution Framework with direct integration to Google Ads → +20% ROAS on SEA budget
📊 Causal Inference Model for objective campaign evaluation → targeted budget reallocation with measurable effect
🧠 Conversion Value Scoring in Vertex AI (GCP) + Integration into Google Ads Bidding
👥 Customer segmentations for strategic market development incl. visualization & marketing personas
🖥️ Interactive Data Apps & PoCs with Streamlit & React – from analysis to click interface

If you are looking for someone who doesn't just deliver PowerPoints but working solutions, let's talk.
  • German

    Native or bilingual

  • English

    Fluent

  • Albanian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Hotelplan Group
    Head of Data & Analytics
    January 2025 - Today (1 year and 5 months)
    Leading central analytics across a multi-brand, multinational travel group undergoing corporate transfor mation.
    • Lead a cross-functional Data & Analytics team delivering AI/ML, data engineering, and business intelligence services across multiple brands.
    • Drive the roadmap and execution of strategic ML initiatives (e.g., conversion modeling, customer journey attribution), deployed to production and generating multi-million CHF in revenue uplift.
    • Shape and execute data strategy during a complex corporate divestment, ensuring technical carve outs align with long-term business architecture.
    • Partner closely with Marketing, Product, and Sales to optimize high-impact levers such as perfor mance marketing spend and retail branch performance.
    • Mentor data scientists, analysts and engineers fostering a culture of experimentation, ownership, and measurable business value.
    Data Science AI and Advanced Analytics Machine learning
  • Hotelplan Group
    Senior Data Scientist
    December 2022 - December 2023 (1 year)
    Built ML solutions at scale to optimize performance marketing and customer journey performance.
    • Built an automated ML model on Vertex AI (Google Cloud Platform) to predict session conversion and value using GA4 data, directly integrated with Google Ads to optimize non-brand bidding—re sulting in ~20% ROI increase on a multi-million euro budget.
    • Developed a custom attribution framework in Python combining SAP and GA4 data, enabling flexible model selection and direct Google Ads integration for SEA optimization.
    • Partnered with the Head of Data & Analytics on team structure, data architecture, business cases, budgeting, and HR planning.
  • Hotelplan Group
    Data Scientist
    November 2022 - November 2023 (1 year)
    Delivered high-impact analyses and causal ML solutions to support strategic decisions across brands.
    • Conducted deep statistical analysis to identify off-season travel personas, triggering a strategic shift that increased occupancy in low-demand periods.
    • Built a counterfactual, tree-based Causal ML model (Python, Kubernetes) with automated HTML reporting via Quarto, enabling targeted campaign evaluation and budget reallocation.
    Stretch Assignments:
    • Represented Hotelplan at HackZurich in collaboration with Migros Group; developed a GraphQL based sustainability travel chatbot.
    • Designed and facilitated a 2-day AI & ML workshop for all Group Directors, showcasing live, reve nue-driving production use cases.

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Education

  • MSc in Data Science
    Goldsmiths, University of London
    MSc in Data Science
  • BSc. in Engineering and Management
    ZHAW School of Engineering
    BSc. in Engineering and Management

Skill set

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