Hank De Lang
Senior Software Engineer at Mullvad VPN
Gothenburg, Sweden
Summary
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Rockstar🎓
Top SchoolHank De Lang is a Senior Software Engineer based in Gothenburg with 13 years of experience building full-stack web applications and reliable test automation across startups and enterprise teams. He combines an M.Sc. in Electrical Engineering and a BBA with hands-on expertise in TypeScript, React/SvelteKit/Vue, Docker, and extensive frontend testing using Playwright and Cypress—recently contributing robust e2e tests and visual diffing to the widely used Mullvad VPN client. Known for shipping pragmatic solutions, Hank has architected and maintained customer-facing systems at Volvo and Jeppesen, led full-stack projects at Annotell and Recorded Future, and contributed to and created multiple open-source projects. Outside of code he’s a practiced photographer and designer, bringing a keen eye for UX and visual detail that shows up in both interfaces and automated UI tests.
13 years of coding experience
16 years of employment as a software developer
Master of Science (M.Sc.), Electrical Engineering Technologies/Technicians, Master of Science (M.Sc.), Electrical Engineering Technologies/Technicians at Chalmers tekniska högskolaBachelor, Business Administration, Bachelor, Business Administration at University of GothenburgExchange student Graduate level, Computer Science, Exchange student Graduate level, Computer Science at University of Waterloo
English, German, Swedish, värmländska, sarcasm
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (9)
uitest10
playwright10
ui-testing10
testing10
javascript9
nodejs8
electron8
vpn7
react7
Programming languages (16)
Github contributions (5)
mullvad/mullvadvpn-app
Aug 2022 - Nov 2022
The Mullvad VPN client app for desktop and mobile
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:119 reviews, 148 commits, 42 PRs in 2 months
Contributions summary:Hank primarily focused on implementing and refining end-to-end (e2e) tests for the Mullvad VPN client app. They added a Playwright configuration file and developed comprehensive tests to validate the different tunnel states, including disconnected, connecting, connected, disconnecting, and error scenarios. The user also introduced screenshot diffing and disabled animations during tests, indicating a focus on test reliability and accuracy. They also added additional tests for connect and settings functionalities.
vpn-clientclient-appelectronrustmullvad
hankolsen/advent-of-code-1
Nov 2021 - Dec 2024
My 2020 Advent of Code Solutions
Contributions:100 pushes in 3 years 1 month
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