Mario Nebl

Hamburg, Germany

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Summary

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Mario Nebl is a Staff Software Engineer based in Hamburg with 12 years of experience simplifying complex systems and boosting developer productivity across both frontend and full-stack domains. He has held senior technical roles at Atlassian and now Personio, shipping tooling and build-system improvements and driving architecture and developer experience initiatives. An active open-source contributor, Mario has meaningful commits to high-profile projects like styled-components, lerna and commitlint and has improved developer tooling such as bankai, xo and svg-term-cli. He combines deep TypeScript/React expertise with practical systems work—fixing streaming bugs, tightening typings, and optimizing compile-time CSS transforms—while also crafting clear developer-facing documentation and screencasts. Outside code, he balances engineering rigor with a human touch evident in thoughtful error messages, tests, and reusable UI primitives.

12 years of coding experience

11 years of employment as a software developer

No degree History, No degree History at Otto-Friedrich-Universität Bamberg

Stackoverflow

Stats

1reputation

0reached

0answers

0questions

Github Skills (60)

conventional-commits10

git10

javascript10

npm10

package-management10

scripting10

testing10

component-development10

css10

css-in-js10

command-line-interface10

code-standards10

typescript10

build-system10

styled-components10

Programming languages (18)

MDXC++RustGoHTMLTypeScriptShellOCaml

Github contributions (5)

marionebl/svg-term-cli

Nov 2017 - Oct 2018

Share terminal sessions via SVG and CSS

Role in this project:

Full-stack Developer

Contributions:82 commits, 18 PRs, 90 pushes in 10 months

Contributions summary:Mario primarily contributed to the development of the `svg-term-cli` project, implementing core functionality and new features. They established the test environment and wrote tests. They implemented the initial rendering logic, base functionality, and theme support. Additionally, the user added features such as an output file flag and command execution capabilities.

csssvg

meetalva/alva

Nov 2017 - May 2019

Create living prototypes with code components.

Role in this project:

Front-end Developer

Contributions:74 releases, 640 commits, 252 PRs in 1 year 6 months

Contributions summary:Mario primarily focused on developing and refactoring UI components within the React framework. Their contributions included the implementation of React components, addressing linting issues, and the creation of reusable text inputs. They also demonstrated skills in handling event-based interactions and managing styling.

reactprototypesdesigndesign-systemtypescript

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