Brownian motion with drift · x(t) = μt + σW(t) · μ = 1.5, σ = 0.8The mean grows linearly in t and the standard deviation as √t, so at long times the drift dominates the fluctuations.

Experience

Professional experience and voluntary work

Machine-learning, research and consulting roles in physics and mathematics, most of them on remote or freelance contracts.

  • WorkDown Small

    Scientific Writer and Editor

    Space Magazine

    Apr 2025 – Present

    Remote

    Astronomy section: sky charts prepared from scientific data with astronomy software, and the accompanying texts.

    AI Training and Subject Matter Expert

    Mercor

    May 2023 – Present

    Remote

    Subject-matter expert in physics, mathematics and Arabic: difficult problems in these fields, written to train and evaluate large AI models for leading AI companies.

    Scientific Advisor and Proofreader

    Photomath

    Feb 2024 – Apr 2025

    Remote

    Proofreading and review of mathematical content.

    AI Training and Subject Matter Expert

    Outlier AI

    Oct 2022 – Jan 2025

    Remote

    Subject-matter expert in physics, mathematics and Arabic: difficult problems in these fields, written to train and evaluate large AI models for leading AI companies.

    Mathematics Curriculum Developer

    J. J. Educational Bootcamp

    Jun 2023 – Oct 2024

    Remote

    Design of mathematics and science curricula.

    May 2023 – Jul 2024

    Remote

    Graduate-level physics and mathematics problems designed to expose model failures, used in AI safety and alignment research.

    Physicist and Scientific Advisor

    Engineering Director Inc.

    May 2023 – Sep 2023

    Remote

    Mathematical model of soil corrosion for the simulation of impressed current cathodic protection of buried pipelines.

  • Machine Learning WorkDown Small

    Machine Learning Engineer

    Mar 2024 – May 2025

    Algiers, Algeria

    System for the automatic detection of tuberculosis, pneumonia and other lung abnormalities in chest X-ray images.

    Machine Learning Researcher

    Jan 2024 – Apr 2025

    Remote

    Design of cost and loss functions for machine-learning models trained on large datasets.

    Machine Learning Engineer

    Agro Tech

    Sep 2021 – Jun 2023

    Constantine, Algeria

    Machine-learning pipeline combining satellite imagery, local weather data and farmer inputs to predict wheat and olive yields and to detect early signs of plant disease.

  • VolunteeringDown Small

    Jan 2025 – Present

    Algiers, Algeria

    Public lectures on physics.

    Machine Learning Engineer

    Biochemistry and Genetics Laboratory, Badji Mokhtar University Annaba

    Feb 2023 – Jun 2024

    Annaba, Algeria

    Development and fine-tuning of a machine-learning model for the analysis of biochemical and genetic data.

    Physics & Mathematics Teacher

    Sep 2020 – Jun 2024

    Annaba, Algeria

    Voluntary teaching of physics and mathematics to students from disadvantaged backgrounds.

    Teacher of Philosophy of Physics

    Frères Mentouri University Constantine 1

    Sep 2018 – May 2019

    Constantine, Algeria

    Course on the philosophy of quantum mechanics.