Janina Grauel

Janina grauel

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location of Janina GrauelBerlin, Berlin, Germany
Followers of Janina Grauel416 followers
  • Timeline

  • About me

    Data Science Mentor | Helping Aspiring Analysts Build Real-World Skills in Python, SQL & ML | Applied Analytics | Data Storytelling Advocate

  • Education

    • Intro to decolonial sustainability

      2024 - 2024
      Possible futures decolonial collective

      Activities and Societies: A collaborative learning journey exploring decolonial thinking — identifying and unlearning harmful patterns and power structures within sustainability and beyond.

    • From passive to active sustainability

      2023 - 2023
      4-week online course lavinia muth

      Activities and Societies: An exploration of sustainability in the fashion industry as a shared, activist, and reflective practice.

    • University of applied science berlin

      2005 - 2009
      Diploma of education fashion/apparel design 1,0 summa cum laude
    • Code academy berlin

      2024 - 2025
      Data science & machine learning

      Activities and Societies: Intensive bootcamp focused on applied data science skills including programming, analytics, and model development. Covered full pipeline from data wrangling to predictive modeling.

  • Experience

    • Cos

      May 2009 - Jun 2011
      Sales advisor

      Delivered customer service on the sales floor, at the till, and in fitting rooms, while supporting daily store operations.Took on additional responsibility as Stockroom Responsible, managing back-of-house logistics and replenishment processes.

    • Cos

      Aug 2011 - May 2024

      Co-created and co-developed COS Full Circle, an award-winning initiative recognized for advancing COS’s circular strategy and setting a new standard for resale and reuse across the H&M Group. The concept was grounded in full value-chain accountability — no garments were exported or handed off to third parties, ensuring transparent, ethical processing. Strategy & Framework• Contributed from early concept through global rollout as part of a dedicated project team• Helped shape the strategic framework for the initiative, ensuring alignment with COS sustainability goals• Designed scalable operational processes for garment takeback, resale, and reintegration into COS’s value chain Measurement & Impact• Led the development of KPIs to monitor sustainability and operational performance• Ensured consistent performance tracking across markets and store formats Implementation & Collaboration• Supported implementation through stakeholder alignment, logistics planning, and training development• Collaborated closely with Sustainability and Operations teams across multiple countries Show less Led global store operations development for 250+ locations across 48 markets as part of the Global Sales Team, with a focus on performance, sustainability, and team enablement.Data & Strategy• Developed dashboards, KPI systems, and planning tools for operational monitoring• Created scalable best practices for stockroom layout, replenishment, stock management, and garment care• Led the Lead Time Accuracy Project, improving delivery accuracy in the test market Italy from 56% to 98%, later rollout to further markets within the whole H&M GroupSustainability• Designed sustainable Back-of-House environments, introducing plastic-free solutions and in-store recycling• Spearheaded the Packaging Reduction Project, cutting packaging volume by 80% across the supply chain• Collaborated with logistics, architecture, sustainability, and design teams to embed eco-principles in operationsPeople & Culture• Created global training materials to support knowledge transfer across diverse, international teams• Acted as Inclusion & Diversity Ambassador, driving initiatives that helped I&D engagement become a top-performing category within the Global Sales Team Show less Supported global store openings on-site, leading logistics operations and back-of-house setup in COS’s highest-turnover, strategically key markets during a period of rapid international expansion. • Planned and executed operational setup for new stores in New York, Los Angeles, London, Paris, Madrid, Berlin, Hong Kong, Shanghai, and other flagship locations• Designed efficient stockroom layouts, coordinated deliveries, and oversaw back-of-house setup during construction phases• Delivered on-site training for store managers and staff on operational routines and COS standards• Provided hands-on support to underperforming stores to optimize logistics, safety, and consistency across regions Show less

      • Circularity Initiative Co-Creator – COS Full Circle (Side Project)

        Sept 2021 - May 2024
      • Global Store Operations Responsible

        Jul 2017 - May 2024
      • Area Store Logistics Responsible

        Aug 2011 - Jun 2017
    • Code academy berlin

      Feb 2025 - now
      Data science mentor

      Part of the instructional team at Code Academy Berlin, mentoring aspiring data professionals in Python, SQL, Tableau, and core data science concepts. Guide students in applying machine learning, data analysis, and data storytelling techniques to real-world projects, with a focus on building compelling, insight-driven narratives. Support learning through one-on-one mentoring, live coding, and collaborative workshops—helping students develop both technical confidence and strong communication skills for data-driven roles. Show less

  • Licenses & Certifications

    • Harvard cs109x: introduction to data science with python

      Harvard university
      May 2025
      View certificate certificate
    • Berlin battle of the bootcamps 2024

      Code institute
      Nov 2024
      View certificate certificate