Yaraslau Kurmyza
Staff Software Engineer at Mozilla
Berlin Metropolitan Area Germany
Summary
🤩
Rockstar🎓
Top SchoolYaraslau Kurmyza is a Staff Software Engineer based in Berlin with 11 years of hands-on experience building scalable, cloud-native platforms and rich front-end experiences. He specializes in Node.js, TypeScript, WebRTC and test automation, and has driven CI/CD and UI reliability improvements for Mozilla’s Taskcluster and Firefox CI. His background spans system architecture, Kubernetes orchestration, and microservices across fintech, mobility, and security-focused startups, where he led teams and delivered ISO27001-aligned systems. He is pragmatic about observability and resilience, having managed Helm charts, Prometheus/Grafana stacks and GitLab/GitHub integrations at scale. An active contributor to Taskcluster’s front-end testing migration (Karma → Jest, Cypress) he emphasizes component-level and E2E coverage to reduce regressions. Colleagues know him for combining deep technical craft with product-minded design and a knack for turning legacy test suites into robust, modern pipelines.
11 years of coding experience
22 years of employment as a software developer
14Bachelor of Applied Maths, Mathematics, Computers, Physics, Applied math, Bachelor of Applied Maths, Mathematics, Computers, Physics, Applied math at Grodnenski Dzjaržauny Universitet imja Janki Kupaly
English, Russian, German, Polish, Russian
Stackoverflow
408reputation
345kreached
7answers
2questions
Github Skills (22)
uitest10
javascript10
cypress10
component-testing10
jestjs10
snapshot-testing10
ui-testing10
react10
test-automation10
ui-design9
front-end-development9
uid9
babeljs6
nginx6
encryption6
Programming languages (14)
Github contributions (5)
taskcluster/taskcluster
Feb 2022 - Jan 2023
CI at Scale
Role in this project:
Front-end Developer & Test Automation Engineer
Front-end Developer & Test Automation EngineerContributions:1 release, 1170 reviews, 299 commits in 11 months
Contributions summary:Yaraslau primarily focused on improving the UI of the taskcluster project, particularly by migrating UI test runners from Karma to Jest, which allowed for component integration and snapshot testing. They introduced and integrated Cypress for end-to-end testing, improving the project's testing capabilities and usability. Additionally, the user added snapshot tests to verify UI component rendering, improving test coverage.
engineersci-frameworkcontinuous-integrationcitaskcluster
lotas/contentful-graph
Jun 2017 - May 2022
Visual representation of contentful content models in form of graphs
Contributions:3 reviews, 51 commits, 23 PRs in 5 years
contentfulrepresentationpdfvisual-representationsvg
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