// Hello, I'm

Dr. Usman
Kayani

I build

Senior Data Engineer at Quantexa R&D  ·  PhD Applied Maths & Theoretical Physics  ·  MSci Integrable Quantum Spin Chains  ·  King's College London

Apache Spark Python Scala Quantum Gravity Spin Chains Supergravity GCP Airflow AI/ML
About Me View CV Blog
15+
Years Coding
5
Publications
PhD
Maths & Physics
Dr. Usman Kayani
Physics animation
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Expertise

What I Do

Bridging the worlds of big data engineering and theoretical physics.

Data Engineering & AI Pipelines
Senior Data Engineer at Quantexa R&D, architecting AI-powered entity resolution pipelines for financial crime detection. Built dynamic Airflow DAG generators, Spark ETL frameworks, and self-service batch ops platforms across GCP and on-premise. 97% in Quantexa Academy; 480+ tickets, 380+ PRs.
Apache Spark Airflow Python Scala GCP Elasticsearch
Quantum Physics & Computing
MSci dissertation on integrable quantum spin chains (Heisenberg model) — a direct foundation for quantum information processing and quantum computing. PhD proved supersymmetry enhancement theorems for black hole horizons across type IIA, massive IIA, D=5, D=6 supergravity — part of the string/M-theory landscape (D=11 → IIA, heterotic, Calabi-Yau compactifications). Developed py_integrability_sugra, an open-source Cadabra2 engine verifying KSE integrability across D=4–11. STFC Scholar; 5 publications.
Quantum Spin Chains Supergravity String Theory Lie Algebras Cadabra / Python
Data Science & ML / AI
At ONS: led the least-cost grocery index project, built PriceIndexCalc (PyPI), achieved 100× speed-up with Pandas UDFs via Apache Arrow, and founded the ONS Data Science Network. Freelance ML: classified household appliance usage from power consumption time series.
TensorFlow / PyTorch Scikit-learn PySpark R Tableau / Power BI

Writing

Recent Posts

All posts
November 14, 2024
Quantum Computing Fundamentals for Data Engineers
An introductory guide to quantum computing concepts, focusing on how it might revolutionize data engineering practices.
Read more
December 30, 2023
Introduction to Pyscript and WebGL
PyScript is a HTML framework to create Python apps in the browser
Read more
September 17, 2022
Primer to Markov Chains
A quick overview of discrete-time Markov Chains
Read more

Tools & Technologies

Tech Stack

  Python   Apache Spark   Scala   GCP   Airflow   Elasticsearch   Docker   BigQuery   TensorFlow / PyTorch   Pandas / NumPy   SQL   Git / Jenkins   Scikit-learn / XGBoost   Java   R / Tableau / Power BI   Hadoop / Kubernetes   Azure / Cloudera / AWS   Mathematica / Maple   Cadabra / LaTeX   Arduino / Raspberry Pi

Research

Publications

Full CV
Symmetry enhancement of Killing horizons in D = 6 supergravity
U. Kayani (Sole Author)  ·  ArXiv Preprint, 2019  ·  arXiv:1912.04249
Symmetry enhancement of extremal horizons in D = 5 supergravity
U. Kayani (Sole Author)  ·  Classical and Quantum Gravity, 2018  ·  10.1088/1361-6382/aac30c
Dynamical symmetry enhancement near massive IIA horizons
J. Gutowski, U. Gran, G. Papadopoulos, U. Kayani  ·  Classical and Quantum Gravity, 2015  ·  10.1088/0264-9381/32/23/235004
Dynamical symmetry enhancement near IIA horizons
J. Gutowski, U. Gran, G. Papadopoulos, U. Kayani  ·  Journal of High Energy Physics, 2015  ·  JHEP06(2015)139
Dynamical Supersymmetry Enhancement of Black Hole Horizons (PhD Thesis)
U. Kayani (Sole Author)  ·  King's College London, 2019  ·  arXiv:1910.01080