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Aayush SaxenaAS

Aayush Saxena

Astrophysicist, AI/ML, Data Science, Visualization

€405/day
London, GB
8-15 years

Average response time: 1 hour

About Aayush

Astrophysics researcher at Oxford with 10+ years experience with data analysis, statistical models, building ML pipelines and scalable computational tools for high-dimensional, multimodal time-series, imaging and hyperspectral data from large telescopes and simulations. Proven ability to extract meaningful patterns from complex, noisy data using Bayesian methods, deep learning and generative models. Highly experienced at applying theoretical and mathematical insight to a range of challenges with fast feedback loops and rich data visualisation. Excited to bring analytical rigour, creative problem solving, deep learning knowledge and coding excellence to AI/ML research roles in collaborative and fast-paced environments.
  • English

    Native or bilingual

  • Hindi

    Native or bilingual

  • Italian

    Basic

Can work on-site
London (up to 15km)

Experience

  • UNIVERSITY OF OXFORD
    POSTDOCTORAL RESEARCHER
    RESEARCH
    September 2022 - Today (3 years and 9 months)
    Oxford, United Kingdom
    • Developed a deep unsupervised learning model to classify spectroscopic/time-series data from James Webb Space Telescope, implementing a Variational Autoencoder (VAE) architecture achieving 98% reconstruction accuracy over varying noise properties. Performed clustering in the latent space to identify inputs with similar properties, discover edge cases and outliers, and generate realistic synthetic datasets from the embeddings. Accepted in NeurIPS Workshop 2025.
    • Side project implementing autoencoder+GAN (TimeGAN) architecture to generate realistic synthetic US Treasury Bond yield curves for risk modelling. Project available on private GitHub repo upon request.
    • Developed optimisation workflows leveraging Genetic Algorithms and parallel computing to extract signals from noisy spectroscopic/time-series data, achieving >20x speedup in optimisation tasks.
    • Released production-grade Python APIs for data sanitisation, masking, and robust model fitting in multi dimensional hyperspectral imaging datasets, being used by 100+ members of my international team.
    • Completed advanced training in CUDA programming, developing custom GPU kernels for tasks in both astrophysics and quantitative finance (e.g., finite difference schemes).
    Python Deep Learning Time Series Analysis and Forecasting Data science AI and Advanced Analytics
  • STATISTICS WITHOUT BORDERS
    PROJECT & CLIENT MANAGER (PRO-BONO)
    ENERGY AND UTILITIES
    April 2024 - Today (2 years and 2 months)
    London, United Kingdom
    • Led a team of five data scientists and researchers to model energy systems and assess decarbonisation strategies for European markets using Python and open-source datasets for an Italian climate think tank.
    • Responsible for project scoping, volunteer recruitment, stakeholder coordination, and final delivery, including documentation and knowledge transfer.
    Python Model Training and Evaluation AI and Advanced Analytics Project Management Team management
  • UNIVERSITY COLLEGE LONDON
    POSTDOCTORAL RESEARCHER
    RESEARCH
    March 2020 - August 2022 (2 years and 5 months)
    London, United Kingdom
    • Built pipelines for analysing time-series and image datasets from the Very Large Telescope, including noise modelling, source detection, model fitting and computer vision for image identification/classification.
    • Employed Bayesian modelling and MCMC for parameter inference and uncertainty estimation in astrophysical models to interpret observed, multimodal spectroscopic/time-series data.
    Machine learning Data science Python Predictive Modeling Time Series Analysis and Forecasting

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Education

  • PHD IN ASTROPHYSICS
    LEIDEN UNIVERSITY
    2019
    PHD IN ASTROPHYSICS
  • MSc Astrophysics
    University College London
    2014

Skill set

Categories