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Julien HaefelinJH

Julien Haefelin

Data Scientist & BizDevOps Engineer

EUR 400/Tag
Genève, CH
3-7 Jahre

Durchschnittliche Reaktionszeit: 1h

Über Julien

With a strong foundation in physics and mathematics, I have transitioned into the field of data science, where I excel at transforming complex datasets into innovative solutions. As a BizDevOps Engineer at SBB CFF FFS, I lead product development for database management applications, optimizing data products to enhance decision-making and operational efficiency. My expertise lies in machine learning and statistical analysis, demonstrated through projects such as time-series forecasting for electricity markets and the development of deep learning models.

I hold multiple certifications, including the IBM Data Science Professional and Azure Data Engineer, which bolster my technical skills in Python, R, and data visualization tools like Power BI. My diverse experience spans roles at PostFinance, Rolex, and volunteer work as a firefighter, showcasing my ability to adapt and thrive in various environments.

Passionate about leveraging technology for impactful results, I continuously seek new challenges and opportunities to apply my skills in data science and engineering to drive innovation and improve customer experiences.
  • Französisch

    Muttersprachlich oder zweisprachig

  • Deutsch

    Verhandlungssicher

  • Spanisch

    Konversationssicher

  • Englisch

    Verhandlungssicher

Nur remote
Führt Projekte hauptsächlich remote aus

Projekt- und Berufserfahrung

  • SBB CFF FFS (CH)
    BizDevOps Engineer
    TRANSPORTWESEN
    Februar 2024 - Heute (2 Jahre und 4 Monate)
    Bern, Switzerland
    Software developer for a database management application in order to develop data products.
    • Defined product in collaboration with stakeholders.
    • Optimized Power BI Dashboard for construction planning.
    • ETL & ELT as well as CI/CD
    Kotlin MSSQL ETL ELT Python
  • SBB CFF FFS (CH)
    Career Starter Data Science
    TRANSPORTWESEN
    September 2022 - Februar 2024 (1 Jahr und 5 Monate)
    Bern, Switzerland
    Three internships within different teams in the company
    • 1. Implementation of an optimizer for the rolling stock.
    • 2. Developed a deep learning model for time-series forecasting of electricity markets, offering insights into our hydroelectric power pricing.
    • 3. Developed PoCs and MVP to gain insights into customer experience using KPIs and Power BI dashboards.
    Machine learning JavaScript Time Series Forecasting Analyse de données Python
  • Rolex
    Internship: Data Science Methodology
    LUXUSGÜTER
    März 2022 - August 2022 (5 Monate)
    Geneva, Switzerland
    Developped GDPR-compliant methodologies for monitoring
    and analyzing public data related to customer satisfaction.
    • Implemented a web scraper in Python for an e‐commerce platform.
    • Presented process and results to management enhancing decision-making.
    Web Scraping Python Analyse de données Microsoft Powerpoint NLP

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Ausbildung und Abschlüsse

  • Licence de physique
    Licence de physique

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