Jannis Leifeld
Principal Software Engineer at shopware AG
Gescher, North Rhine-Westphalia, Germany
Summary
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RockstarJannis Leifeld is a Principal Software Engineer with a decade of experience, currently shaping developer workflows and front-end architecture at Shopware in Germany. He blends hands-on Vue 3 administration UI development with DevOps automation—building Cypress E2E environments, dockerized test scripts, and CI tooling to streamline builds, linting, and schema generation. At Shopware he contributes to a major open commerce platform used worldwide, fixing nuanced component rendering issues while enabling reproducible local and CI test runs. Prior to Shopware he cut his teeth as a web developer at Team Meuter, bringing practical full-stack sensibilities to platform-scale problems. Known for smoothing the transition to modern front-end stacks, he quietly focuses on developer experience improvements that accelerate team delivery.
10 years of coding experience
Github Skills (17)
javascript10
docker10
cypress10
ui-components10
bash10
dockers10
cicd10
front-end-development10
vue10
shopware10
vue-jsx10
npm9
testing8
nodejs7
scs6
Programming languages (12)
Github contributions (5)
shopware/shopware
Feb 2019 - Jan 2023
Shopware 6 is an open commerce platform based on Symfony Framework and Vue and supported by a worldwide community and more than 1.500 community extensions
Role in this project:
Front-end Developer
Front-end DeveloperContributions:144 reviews, 1864 commits, 93 PRs in 4 years
Contributions summary:Jannis's commits primarily focus on front-end development tasks within the Shopware 6 administration interface. The code changes involve fixing bugs and updating the user interface components to be compatible with Vue 3. The user has been working on components, specifically within the context of the Administration UI, and has been tasked with addressing the codebase’s transition to Vue 3. The user is fixing the rendering and behavior of the components.
ecommerceshopwareapifirstshopping-cartvue
shopware/development
Jun 2019 - Apr 2021
Role in this project:DevOps Engineer
DevOps EngineerContributions:11 commits, 10 comments, 2 issues in 1 year 10 months
Contributions summary:Jannis primarily focuses on automating and improving the development workflow through various DevOps practices within the Shopware platform. They have been involved in setting up and configuring the E2E testing environment with Cypress, including the creation of scripts for local and docker-based testing. The user also made changes to scripts for linting, building, and installing dependencies for both the administration and storefront components of the Shopware application. Furthermore, the user has integrated feature flag dumping and entity schema generation into the build and testing processes.
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