Stephen Muller
Senior Software Development Engineer at Mastercard
Sydney, New South Wales, Australia
Summary
👤
Senior🎓
Top SchoolStephen Muller is a meticulous Senior Software Development Engineer with nine years’ experience building reliable Java and SQL-based systems and managing complex Unix environments and release processes. He has driven stability and efficiency across financial services—reducing deploy friction, cutting database load by hundreds of thousands of calls per day, and shepherding DR failovers and critical hotfixes at HSBC and Metro Bank. At Mastercard he focuses on defect sleuthing in Continuous Engineering while also mentoring teammates and improving developer onboarding through clear, practical documentation. A quality-first engineer who prefers long-term, resilient solutions, he balances technical rigor with a creative side as the author and illustrator of Squid and Whimsy, where he hones concise, engaging guides that make complex topics approachable.
9 years of coding experience
6 years of employment as a software developer
Bachelor of Science with Honours (BSc Hons), Computing And Information Systems, First Class Honours (1:1) - 80.75%, Bachelor of Science with Honours (BSc Hons), Computing And Information Systems, First Class Honours (1:1) - 80.75% at Anglia Ruskin UniversityAll Saints Sixth Form College
English
Github Skills (15)
azure7
microsoft-azure6
microsoft6
nodejs4
python4
npm3
windows3
graphql-subscriptions2
rest2
graphql1
machine-learning1
build-tools1
science1
node-gyp1
data-science1
Programming languages (5)
Github contributions (5)
c42-arun/angular-course-project
Jul 2017 - Jan 2018
Contributions:4 PRs, 27 pushes, 7 branches in 5 months
angular-2angular
c42-arun/dynamics365-plugins
Mar 2020 - May 2020
Contributions:8 commits, 13 pushes, 1 branch in 2 months
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