John Sandall
London, England, United Kingdom
Summary
👤
SeniorJohn Sandall is a London-based data scientist and entrepreneur with a decade of experience turning data into practical, scalable solutions across marketing, engineering, and public-interest projects. As Co-Founder of Day30 and CEO of Coefficient, he leads data-driven performance marketing for subscription apps and delivers data science, engineering, and training services to a diverse client base. His work spans building scalable data architectures, automating analytics workflows for firms like Kingston Smith and Franchise Partners, and advancing open-data election methodologies through SixFifty. He co-founded Knodium and is a Residential Fellow at Newspeak House, reflecting a sustained interest in how technology, education, and politics intersect. An Imperial College London MSci Mathematics graduate, he combines rigorous quantitative thinking with hands-on software delivery to ship reliable systems at scale.
11 years of coding experience
Stackoverflow
449reputation
28kreached
4answers
1question
Github Skills (200)
python10
scrapy10
maven10
crawler10
locking10
genetic10
validation10
guidelines10
crawling10
scraper10
packaging10
parsing10
web-scraping10
pandas9
inspection9
Programming languages (13)
Github contributions (5)
john-sandall/coffee-tracker
Mar 2016 - Feb 2019
Tiny Django app to help me track methods for making coffee + predictive models (eventually) to help make the perfect brew.
Contributions:1 PR, 2 pushes, 1 branch in 2 years 10 months
brewpythoncoffeedjangotiny
john-sandall/homebrew-fonts
Apr 2015 - Aug 2017
Contributions:2 PRs, 1 push, 3 branches in 2 years 4 months
homebrew-caskfontcaskscaskhomebrew
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