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Piyush Sham PatilData & AI Engineer
Professional Experience

ML Research - Battery Diagnostics

Clarios VARTA GmbH
May 2025 – Present | Hannover, Germany
  • •Refactored and modularized legacy ML codebase into a scalable, clean architecture for predicting battery cranking ability.
  • •Integrated a cranking curve preprocessing module with first order signal gradients, boosting prediction accuracy by 10%.
  • •Utilizing Azure DevOps for version control, task tracking, and CI/CD pipeline integration.
  • •Testing and validating the new pipeline on real-world battery data in Snowflake, enabling scalable model evaluation.

    • Conversational AI Engineer

    Cognizant Mobility GmbH
    Jun 2024 – Jan 2025 | Munich, Germany
  • •Developed an intent recognition system with Azure OpenAI and custom taxonomies for conversational AI.
  • •Used LLMs, RAG, embeddings, and a vector database with LangChain for intent-based query reformulation.
  • •Improved user engagement by 20% with personalized, context-aware AI responses using intent-based insights.
  • •Exposed intent recognition and reformulation services via REST APIs for seamless integration across microservices and clients.

    • Data Scientist - Vehicle Dynamics

    Forvia HELLA GmbH
    Mar 2024 – May 2024 | Lippstadt, Germany
  • •Improved passenger comfort in autonomous vehicles by predicting motion sickness using time series data.
  • •Analyzed time-series sensor data using Scikit-learn and visualized results with Palantir Foundry to support BI reporting.
  • •Developed a ML model in TensorFlow to predict motion sickness, achieving 85% efficiency.
  • •Conducted unsupervised learning using K-means clustering to assess driver profile consistency.

    • ML Student Assistant - Multisensor Analytics

    University of Siegen
    May 2023 – Oct 2023 | Siegen, Germany
  • •Developed a machine learning model to classify structural static load conditions, enhancing predictive analysis.
  • •Processed datasets from multiple sensors and applied various algorithms for optimal performance.
  • •Visualized model performance and results using Matplotlib.
  • •Achieved 95% accuracy and robustness in detecting 24 diverse load conditions, enhancing data-driven insights.

    • Application Development Associate

    Accenture ATCI
    Jan 2021 – Aug 2021 | Pune, India
  • •Managed and interacted with enterprise-level databases using SQL for data retrieval, storage, and updates.
  • •Utilized Siebel CRM tools for manipulating business data objects and supporting data integrity.
  • •Created analytics documentation to standardize BI processes and support stakeholder collaboration.
    • Projects

    AugMix for Enhanced Image Classification

    May 2023 – Jun 2023
  • •Trained ResNet-18 and ConvNeXt-T on CIFAR-10 using PyTorch with dual optimizers and adaptive learning rates.
  • •Evaluated and visualized model performance on CIFAR-10-C and CIFAR-10-P datasets using TensorBoard.
  • •Conclusion: Achieved 11.04% test error and 0.034 mFR with ResNet-18 using optimizers, outperforming ConvNeXt-T.

    • Deep Learning-Based Anomaly detection using Auto-encoders

    Jan 2023 – Feb 2023
  • •Designed a convolutional AutoEncoder model for early anomaly detection on the Capsule image dataset.
  • •Trained the model to capture latent space features and performed latent space analysis to identify anomalies.
  • •Conclusion: Achieved 92% anomaly detection accuracy and reduced false positives by 18% through latent space analysis.
    • Education

    MSc. Mechatronics

    University of Siegen
    Oct 2021 – Mar 2025 | Siegen, Germany

    Bachelor of Engineering in Mechanical

    University of Pune
    Aug 2016 – Dec 2020 | Pune, India
    Technical Skills
    Programming: Python, SQL, HTML, MATLAB/Simulink
    Data Visualisation: Matplotlib, TensorBoard, MS Excel, Tableau
    ML Frameworks: NumPy, Pandas, TensorFlow, PyTorch, Scikit-learn, LangChain
    Generative AI: Prompt Engineering, Natural Language Processing, GPT
    Cloud & MLOps: Azure ML, Snowflake
    Soft Skills: Problem-Solving, Collaboration, Critical Thinking
    Certificates
    Languages
    German: B2English: C1
    Interests
    SwimmingGymCricket