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Harry Twyford

Software Mechanic

harry at harrytwyford dot com

linkedin.com/in/htwyford

Harry Twyford

Professional Experience

Dropbox

Tech Lead, Senior Software Engineer (IC4)
March 2025 – Present
  • Technical Lead of the Previews team at Dropbox, leading ten engineers building file previews across Web and the Dropbox desktop app.
  • Working full-stack to serve millions of previews every day across dropbox.com, Dropbox Dash, and other Dropbox products.
  • Strong focus on improving page performance, leading the team to make shared file pages twice as fast and counting.
Tech Lead, Software Engineer (IC3)
March 2023 – March 2025
Software Engineer (IC3)
March 2022 – March 2023

Mozilla

Senior Software Engineer (IC3)
August 2021 – January 2022
  • Building the Firefox Desktop address bar with a small team of engineers. The address bar is used billions of times every week and accounts for over 85% of Mozilla's revenue. It is highly performant, widely tested, and accessible.
  • Overseeing all changes to Firefox styles as one of three Firefox Theme peers. I was named a peer for my high-quality contributions to the Firefox front-end.
  • Integrating Firefox Desktop with macOS in Objective-C++. Mozilla's macOS team, comprising five engineers, is focused on making Firefox a first-class browser on the Mac.
Software Engineer (IC2)
March 2020 – August 2021
Software Engineer (IC1)
June 2019 – March 2020

JNE Consulting

Project/Quality Support
May 2016 – May 2018

Education

Honours B.A. with High Distinction
Trinity College, University of Toronto, Class of 2019

Majors in Economics and International Relations, Minor in Computer Science

Volunteer Experience

Secretary-General, University of Toronto Model United Nations
April 2018 – April 2019
  • Led an executive of 13 and a staff of 100 to present a conference.
  • Oversaw all aspects of the conference, including conference programming, venue booking, registration, design and branding, and public relations.
Speaker & Prime Minister, Trinity College Literary Institute
March 2017 – April 2019
  • Led team of 30 executive members in running Canada's oldest debating society.

Skills

  • TypeScript/React, Python, web standards
  • Leadership, mentoring, and team management
  • Web performance

Interests