Leif Singer
Engineering Manager at Ghost
Hanover, Lower Saxony, Germany
Summary
🤩
Rockstar🎓
Top SchoolLeif Singer is a senior engineering manager and researcher with 17+ years building and scaling distributed web teams and systems, currently leading multiple engineering teams at Ghost. He pairs deep hands-on full‑stack experience (TypeScript, JavaScript, Python, PHP, Ruby) and notable open-source contributions to WordPress.com and WooCommerce with an academic background—a PhD in software engineering—and a long track record of applying qualitative research to developer collaboration. Known for converting research insights into practical remote-first rituals, hiring practices, and developer experience metrics, he has shaped async workflows across organizations of diverse geographies. He’s equally comfortable shipping checkout features that touch tens of millions of users and designing studies about the “qualia” of software work, and he speaks German and English fluently.
17 years of coding experience
23 years of employment as a software developer
Ph. D. Software Engineering, Ph. D. Software Engineering at Leibniz Universität Hannover
English, German, French
Github Skills (14)
woocommerce10
localstorage10
e2e-testing10
php10
javascript10
front-end-development10
react10
e2e-test10
s69
wordpress8
redux8
html6
css6
nodejs6
Programming languages (10)
Github contributions (5)
Automattic/wp-calypso
Nov 2015 - Mar 2020
The JavaScript and API powered WordPress.com
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 reviews, 228 commits, 326 PRs in 4 years 4 months
Contributions summary:Leif primarily focused on front-end development tasks within the WordPress.com project, specifically related to the signup, checkout, and plans features. They implemented functionality for auto-applying coupons, extending their validity period, and adding new coupons to the whitelist. The user also addressed accessibility issues, removed autofocus attributes, and added the GDPR banner to the logged-out layout. Their work included modifying React components and integrating with localStorage for coupon management.
apireactwordpressjavascriptes6
woocommerce/woocommerce
Dec 2020 - Jun 2021
A customizable, open-source ecommerce platform built on WordPress. Build any commerce solution you can imagine.
Role in this project:Back-end Developer & QA Engineer/Test Automation Engineer
Back-end Developer & QA Engineer/Test Automation EngineerContributions:5 releases, 324 reviews, 8 commits in 5 months
Contributions summary:Leif primarily contributed to the WooCommerce platform by fixing documented return types in price calculation functions and resolving a merge conflict issue. Furthermore, they developed and integrated end-to-end tests, specifically focusing on checkout processes for registered shoppers. Their contributions involved modifying PHP code and creating new tests and test files using JavaScript and potentially related testing frameworks.
ecommercecommercewordpressautomatticphp
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