DAVID HEMPSTON

Python developer & data scientist

Introduction

An enthusiastic data scientist and python developer with a passion for building complete products out of the hidden patterns often found in big data. My preferred language is Python were I have extensive knowledge (Pandas, sklearn, NumPy, Matplotlib, Django and building REST api's with json+requests) but I also have some familiarity with R. I have experience with regression models (linear, non-linear and logistic) and random forests. I am also competent with C++, HTML/CSS and Javascript, with some exposure to C#. I am looking to take my skills and apply them to new and novel technologies and challenges.

Skills

Specialisations: numpy, scipy, matplotlib, openMPI, git, phasor

Experience

PHD RESEARCHER
July 2013 to present
Optomechanical sensors for detecting spin (both electrical and magnetic), gravitation effects, dark matter and dark energy. By using data analysis techniques such as mathematically modelling and large scale data acquisitionare it was possible to detect the effect on the particle of just 10s of electrons. The system was modelled mathematically and numerically in Python using NumPy, SciPy, and matplotlib, giving me extensive knowledge of these packages. Complex analysis sometimes involved the use of the University of Southampton's computational cluster (Iridis) with PyMPI.
COMMITTEE MEMBER
Southampton QLM summer school
July 2014 to May 2015
Member and organiser of the QLM summer school 2015, held in Totland Bay, Isle of Wight for 50 students and speakers. I was responsible for finance and travel, while being jointly responsible for maintaining the website. This allowed me to develop my teamwork and diplomacy skills as well as management and financial planning.
CNC PROGRAMMER
Sept 2004 to July 2008
Responsible for the production of orders of 10,000+ with sizes from 42 mm to 0.3 mm diameter, all to within 50 micrometers. Generally working with Citizen CNC Sliding Head Machining Centres. This taught me early in my career that precion is key in everything I do, and even though I have moved away from mechanical engineering I still remind myself of this.

Education

MPHYS – FIRST CLASS (HONS)
University of Southampton
Sept 2008 to June 2013
  • Python and computational modelling
  • Multivariable vector Calculus
  • Advanced Quantum Mechanics
  • Special relativity: Lorentz boots and the Klein-Gorden equation
  • Electromagnetism
  • Applied Nuclear Physics (Theoretical and case studies)
  • Final year was pure experimental research with the project title "Lambda levels in Graphene"

Awards

DEAN'S AWARD
July 2016
“For exceptional contribution to the Faculty of Physical Sciences and Engineering at the University of Southampton.”

Publications

Hempston, D., Vovrosh, J., Toroš, M., Rashid, M., and Ulbricht, H. "Force sensing with an optically levitated charged nanoparticle", arXiv, 2017

Vovrosh, J., Rashid, M., Hempston D., Bateman J., Paternostro, M., Ulbricht, H. "Parametric feedback cooling of levitated optomechanics in a parabolic mirror trap", Journal of the Optical Society of America B, Vol. 34, Issue 7, 2017

Rashidm M., Tufarelli T., Bateman J., Vovrosh J., Hempston D., Kim M. S., Ulbricht H. "Experimental Realization of a Thermal Squeezed State of Levitated Optomechanics", Phys. Rev. Lett. 117, 273601, 2016