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Hadjer K. has a diverse work experience. Hadjer started working at Mercy Corps in 2016 as an Intern in Project Management, where they learned about the tools and techniques used to identify and plan projects to solve community issues. In 2016, they also joined ATM Mobilis as an Intern in Computer Science for their Graduation Project.

In 2017, they joined Trustiser as a Front-end Developer, where they worked on a multi-sided platform that manages a community of members and focuses on trust and reputation management. Hadjer used technologies like Angular, Ionic, Cordova plugins, Neo4J, ElasticSearch, Grapheaware, and Kibana for this role.

In 2019, Hadjer K. joined Geotrend as a Data Science Intern. Their main goal was to improve the accuracy of the relation extraction system using pattern matching and machine learning techniques. Hadjer worked with technologies like Python, spaCy, NLTK, sklearn, TensorFlow, RNN, and CNN. Additionally, they specialized in Artificial Intelligence, Natural Language Processing, Information Extraction, Relation Extraction, Machine Learning, Neural Networks, and Dataset Construction.

Hadjer continued their journey at Geotrend as an NLP Data Scientist and also pursued a CIFRE PhD thesis on the same subject. The details of their work as an NLP Data Scientist are not provided.

Overall, Hadjer K. has gained experience in project management, computer science, front-end development, and data science, with a focus on natural language processing and machine learning.

Hadjer K. began their education at Lycée Saad Dahleb in Algiers, where they completed their Baccalauréat in Experimental Sciences from 2009 to 2012. Hadjer then pursued higher education at the Ecole nationale Superieure d'Informatique (ESI) from 2012 to 2017, where they earned an Engineer degree along with a Master's degree in Computer Science Engineering, specializing in Information Systems.

In 2016, Hadjer K. had the opportunity to study at Portland State University as an MEPI Student Leader, focusing on Civic Engagement. Following this experience, they enrolled at Université Paul Sabatier Toulouse III in 2018 and completed their Master's degree in Data & Knowledge Management the following year.

Continuing their academic journey, Hadjer K. pursued a Doctor of Philosophy (PhD) degree at Université Paul Sabatier Toulouse III from 2019 to 2022, focusing on Natural Language Processing and Information Extraction in the MELODI team.

Based on the given information, it can be concluded that Hadjer K. has a strong background in computer science and data management, with a growing specialization in Natural Language Processing and Information Extraction.