Brian O’Halloran, Ph.D.



I am seeking a senior/lead data scientist role, in which I can continue to leverage and expand upon the quantitative, analytical and management skills that I have gained in over a decade of working in the field of astronomy, and more recently, in a commercial environment.


Technical Proficiency and Expertise

Languages: Python, R, and SQL

Deep Learning: Keras, Tensorflow, gensim

Google Stack: BigQuery, Compute Engine, ML Engine, Google NLP API

Visualisation: Tableau, Shiny, Plotly, ggplot, matplotlib/seaborn

I possess a strong familiarity with a variety of machine learning/statistical predictive analysis techniques:

  • Classification: SVM, logistic regression, random forests
  • Natural Language Processing (NLP): text classification, recommendation engines, topic modeling, entity extraction
  • Unsupervised Learning: clustering, t-SNE, PCA
  • Time-Series Analysis: ARIMA, exponential smoothing
  • Regression

I work extensively with deep learning frameworks for NLP (convolutional neural networks in Keras, Tensorflow)

I work in an agile data science framework (JIRA, Kanban, standups), and I am an advocate of reproducible research (GitHub, Markdown, Jupyter notebooks, Shiny).


Employment History

Data Scientist, Telegraph Media Group, London (2017-present)

  • Leading NLP focused projects for classifying Telegraph content, and for providing article recommendations for the Editorial team.
  • Delivered probabilistic seat model for 2017 UK General Election, as part of the Telegraph General Election coverage.

Lead Data Science Instructor, General Assembly, London (2016-present)

  • Instructor for the ‘Introduction To Data Science’ course.

Data Scientist, eFinancialCareers, London (2015-2017)

  • First data science hire within the company, led data science team.
  • Developed NLP classification algorithms for user content.

Astrophysics Group, Physics Department, Imperial College London (2008-2013, Visiting Researcher, 2013-2014)

  • Post-doctoral scholar, worked on studies of the interstellar medium. Worked on the European Space Agency Herschel Space Telescope project, as part of the SPIRE instrument team.

George Mason University, Fairfax, VA, USA (2004-2008)

  • Post-doctoral scholar.

Dunsink Observatory, Dublin, Ireland (2002-2004)

  • Post-doctoral scholar.



 University College Dublin, Ireland

  • Ph.D. in Experimental Physics, 2003

NUI Maynooth, Ireland

  • B.Sc. (Hons) in Experimental Physics and Mathematics: grade 2.2, 1998.


Special Information

 I am an Irish/EU citizen. References are available on request.