Hanen Ben Salem

Experience

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  ZNet-IT

  Jul 2021 - Aug 2021

  Student Intern

  Development of a mobile meal delivery application :- Designed attractive user interfaces with Flutter, guaranteeing a 100% responsive experience.- Improved delivery provider selection for a Saudi client’s app, utilizing Git and increasing efficiency by 20%.

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  Digital Research Center of Sfax

  Feb 2022 - May 2022

  Student Intern

  Performance of AI models for hate speech detection in Arabic:- Collected and cleaned two sets of data, one with 6,024 Arabic text samples, demonstrating skill in preparing data.- Analyzed six hate speech detection approaches using Weka and Google Colab, comparing models and achieving accuracies between 72% and 83%.- Improve the best model by adding more methods and standard embeddings to make it work even better.

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  Anavid

  Aug 2022 - Sept 2023

  Responsible for Anavid's project to stop shoplifting in big stores, among other projects:- Organized the daily cycle of data preprocessing, model training, and analysis to provide valuable insights to projects.Supervised data preparation and pre-processing, supported 5 freelancers and increased efficiency by 30% in 3 months.- Optimized and enhanced Python scripts, and bash scripts, leading to a remarkable 95% reduction in processing time.- Conducted technical demonstrations, elevating client satisfaction and project adoption significantly by 20%.- Boosted data protection in Anavid's projects by nearly 86% through advanced obfuscation in Python projects. Show less

  • Data scientist

    Oct 2022 - Sept 2023

  • Summer Internship

    Aug 2022 - Sept 2022
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  BePrimeTech

  Oct 2023 - Dec 2024

  - Researched relevant KPIs to provide valuable insights and analytics to key stakeholders in the travel sector.- Managed a MongoDB database of tourist data and leveraged Power BI to create 11 interactive dashboards for the Project Booking Engine implementation.- Integrated Power BI dashboards into an Angular application, enabling seamless access without Power BI authentication. Work on the BePrimeTravel project focused on the tourism industry:- Developed a user-friendly interface for BePrimeTravel with Angular Material 16, resuting in nearly identical replication of the previous design with a 96% fidelity.- Created a validation system to connect BePrimeTravel to different travel providers.- Ensured all supplier information for mapping, using Dozer and MongoDB for streamlined data management.

  • Data Analyst

    Mar 2024 - Dec 2024

  • Full Stack Java/ Angular

    Oct 2023 - Feb 2024
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  Institut International de Technologie

  Mar 2024 - Jun 2024

  Student Intern

  Facial emotion recognition during a job interview:- Balanced RAF-DB dataset across 7 classes, improving model performance and achieving a balanced training set.- Created a CNN model from scratch achieving 92.53% training accuracy and 80.03% test accuracy by combining SMOTE and data augmentation.- Implemented face detection functionality in a Django application, enabling real-time emotion analysis on uploaded images and videos.- Develop a Docker image that includes the application and its emotion analysis feature for easy deployment and scalability. Show less

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  CognoRise InfoTech

  Apr 2024 - May 2024

  Data Scientist Intern

  - Developed credit card fraud detection model with logistic regression, achieving 99% accuracy.- Implemented XGBoost for Titanic survival prediction, achieving high accuracy and 20% robustness improvement.- Resolved car price prediction using linear regression, with mean absolute error of 1611.12 and R-squared of 0.85.