
Zeyad Ezzat
@zeyadezzat
Machine Learning Engineer at Mozn who redesigned production AI search and improved Recall@10 by 10 points.
What I'm looking for
At Mozn, I led the redesign of a production AI search platform, simplifying multi-index orchestration and making it faster to integrate retrieval capabilities across products. I also improved Recall@10 by 10 percentage points through document chunking, segmentation, and preprocessing, and increased retrieval throughput by up to 10x by optimizing inference.
At Applied Innovation Center - MCIT, I continued pretraining transformer language models on Arabic tokens and managed distributed training workflows for models ranging from millions to 70B parameters. My work spans information retrieval, RAG, and Arabic NLP; I’ve published four peer-reviewed papers in Arabic NLP.
Experience
Work history, roles, and key accomplishments
Data Scientist III
Mozn
Feb 2025 - Present (1 year 8 months)
- Search Platform Architecture: Led the redesign of a production AI search platform, simplifying multi-index orchestration and enabling rapid integration of retrieval capabilities across multiple products.
- Retrieval Optimization: Designed advanced document chunking, segmentation, and preprocessing strategies that increased Recall@10 by 10 percentage points while maximizing downstream LLM context
Research And Development Engineer
Applied Innovation Center - MCIT
Sep 2023 - Feb 2025 (1 year 5 months)
- Language Models: Continued pretraining transformer language models on billions of Arabic tokens to improve semantic representations for downstream NLP applications.
- Distributed Training: Managed distributed training workflows for transformer models ranging from millions to 70B parameters.
- Efficient Deployment: Reduced inference cost using PEFT, LoRA, BitsAndBytes, and AWQ while maintaining m
Research And Development Associate
Applied Innovation Center - MCIT
Sep 2022 - Sep 2023 (1 year)
- Distributed Training: Built scalable transformer training pipelines across multi-GPU and multi-node environments using DeepSpeed, Slurm, and Kubernetes.
- Training Optimization: Improved GPU utilization through DeepSpeed ZeRO optimization, optimizer offloading, and mixed precision training.
- Dataset Engineering: Developed preprocessing pipelines for structured and unstructured datasets supporti
Teaching Assistant
Nile University
Nov 2020 - Aug 2022 (1 year 9 months)
Teaching Assistant in the School of Information Technology and Computer Science.
- Delivered tutorials and lab sessions, both online and in person, for undergraduate courses including Machine Learning, Computer Vision, Image Processing, Natural Language Processing, and Data Mining.
- Designed lab exercises and programming assignments, and mentored students through hands-on implementation tasks.
-
Research Assistant
Alexandria University
Nov 2020 - Jul 2022 (1 year 8 months)
- Tokenizer Development: Designed custom Byte-Pair Encoding (BPE) tokenizers and pretrained masked language models from scratch for Arabic NLP.
- Semantic Representations: Evaluated classical and neural text representations, including TF-IDF, word embeddings, and transformer encoders for downstream NLP tasks.
Undergraduate Research Assistant
Faculty of Engineering, Alexandria University, Egypt
May 2020 - Aug 2020 (3 months)
Arabic NLP research on dialect identification for the NADI 2020 shared task (Nuanced Arabic Dialect Identification).
- Ranked 5th in the NADI 2020 shared task.
- Built and compared classical machine learning baselines and deep learning models, including fine-tuned BERT.
- Ran and analyzed experiments to systematically improve the team's leaderboard score.
- Published "Arabic Dialect Identification
Education
Degrees, certifications, and relevant coursework
Nile University
Master's degree, Informatics
2021 - 2025
Course work:
Image Processing and Computer Graphics:A+
Cloud Computing: A
System Engineering: A
Machine Learning and Data Analysis: A-
Advanced Big Data: A-
Computer Vision: A-
Deep Learning: A-
Intro to Big Data: B
Project Management : B
Alexandria University
Bachelor's degree, Computer and Communication Engineering
2015 - 2020
Coursera
Practical Reinforcement Learning
Sep 2020
Coursera
Natural Language Processing
Oct 2020
Coursera
Introduction to Deep Learning
Jul 2020
Coursera
How to Win a Data Science Competition: Learn from Top Kagglers
Jun 2020
Udacity
Nanodegree, Deep Learning
2019 - 2019
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Salary expectations
Social media
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