Fernando Fleury
Staff Software Engineer at SumUp
London, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolFernando Fleury is a Staff Software Engineer based in London with 11 years of experience building scalable web applications, bridging frontend craftsmanship and systems design. He has a strong track record at SumUp—rising from Senior Frontend Developer to Frontend Lead and now Staff—where he built and led the Frontend Infrastructure team, helped scale a merchant dashboard serving millions, and contributed to the popular open-source Circuit UI design system. Comfortable across stacks (React, Elixir/Phoenix, Kubernetes/Docker) he pairs hands-on implementation with cross-team coaching, technical onboarding, and architectural guidance. Known for pragmatism and collaboration, he focuses on long-term, maintainable results rather than quick wins. Off the clock he jokes about “writing useless code since 2009,” hinting at a playful curiosity that fuels continuous experimentation.
11 years of coding experience
7 years of employment as a software developer
Technical Degree, Computer Science, Technical Degree, Computer Science at Mater Amabilis
English, Portuguese
Stackoverflow
71reputation
2kreached
2answers
5questions
Github Skills (18)
react-components10
carbon-design-system10
system-design10
react-component10
system10
component-library10
sys10
react10
javascript9
circuit9
css8
storybook8
html6
internet-explorer6
nodejs6
Programming languages (12)
Github contributions (5)
sumup-oss/circuit-ui
May 2018 - Aug 2020
SumUp's design system for the web
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 releases, 5 reviews, 109 commits in 2 years 4 months
Contributions summary:Fernando primarily contributed to the development of the `circuit-ui` design system, focusing on implementing and refining various UI components. They added a Grid context, including the configuration, and prototype, and wrote specs, examples and stories for it. They also updated existing components and their behavior. This work improved the design system's functionality and usability.
reactsumupcircuit-uidesign-systemreact-components
fernandofleury/blog
Jun 2018 - May 2020
Contributions:8 commits, 41 pushes, 7 branches in 1 year 11 months
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