Ollie Haydon-mulligan
Software Engineer
Bristol, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolOllie Haydon-Mulligan is a seasoned full-stack Ruby on Rails engineer with a decade of experience building web apps and APIs, and a background in organising national and local election campaigns. After graduating from Makers Academy he progressed from backend roles at Simpleweb to Senior Web Developer and Lead Engineer at Cookpad, where he drove cross-team initiatives like accountless subscriptions, collaborative Cookbooks, and a Hotwire migration while mentoring multiple engineers. He combines product-focused craftsmanship with operational rigor—debugging complex issues like lock wait timeouts and deadlocks and maintaining multi-gateway payment flows. Known for clear communication and team facilitation, he also co-organises the South West Ruby Meetup and co-chairs Cookpad’s Rails SIG. Based in Bristol, he brings a rare mix of campaign-level strategic planning and hands-on engineering to reduce user friction and ship reliable features.
10 years of coding experience
6 years of employment as a software developer
MST121, Mathematics, MST121, Mathematics at The Open UniversityRemote Full-Stack Software Development Bootcamp, Computer Software Engineering, Remote Full-Stack Software Development Bootcamp, Computer Software Engineering at MakersBachelor of Arts (B.A.), Social and Political Sciences, 2.1, Bachelor of Arts (B.A.), Social and Political Sciences, 2.1 at University of Cambridge
Stackoverflow
485reputation
43kreached
13answers
12questions
Github Skills (159)
python10
mvc10
ruby10
activerecord10
ruby-on-rails10
single-page10
html10
kubernetes10
crashlytics10
rails10
rails-app10
push-notifications9
rebuild9
turbo9
obsolete9
Programming languages (7)
Github contributions (5)
ollieh-m/my-father
Jul 2018 - Jun 2023
Contributions:78 PRs, 130 pushes, 58 branches in 4 years 11 months
ollieh-m/blog
Dec 2019 - Aug 2022
Contributions:4 PRs, 33 pushes, 5 branches in 2 years 8 months
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