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Jon Calder's work experience includes the following roles:

- Automation Engineer at Libryo, starting in February 2018.

- Member at R Weekly since April 2017.

- Track Maintainer at Exercism since March 2017, responsible for maintaining and mentoring the R language track.

- Conference Organizer at SatRdays since February 2017, involved in organizing satRdays conferences in Cape Town and Johannesburg.

- Data Scientist at Derivco from August 2017 to January 2018.

- Data Analyst at Derivco from September 2016 to July 2017, performing tasks such as assisting with product and feature design, documenting products, and conducting industry research.

- Data Analyst at RightShift from November 2011 to August 2016, responsible for creating and maintaining reports, measuring application data, and tracking application performance.

- Statistics Tutor at University of Cape Town from 2008 to 2011.

- Actuarial Internship at Momentum in November and December 2007.

Jon Calder completed their education at the University of Cape Town. From 2005 to 2007, they obtained a Bachelor of Science degree with a major in Statistics, Actuarial Science, Mathematics, and Finance. Jon then went on to earn a Bachelor of Science Honors degree in Statistics and Operations Research in 2008. Later, from 2009 to 2013, they pursued a Master of Science degree with distinction in Operations Research, focusing on Multi-Criteria Decision Analysis and Statistics. In addition to their academic qualifications, Jon Calder also obtained several certifications through Coursera. These include R Programming, The Data Scientist's Toolbox, Functional Programming Principles in Scala, An Introduction to Interactive Programming in Python, A Beginner's Guide to Irrational Behavior, Gamification, Social and Economic Networks: Models and Analysis, Data Analysis, Machine Learning, and Computing for Data Analysis.