Kevin Herklotz
Senior Frontend Engineer (freelance)
Experience
Jan 2022 - Apr 2023
4 months Switzerland
Senior Frontend Engineer (freelance)
Ricardo
- Helping my former employer to deliver new search related features faster
Aug 2022 - Aug 2023
1 year 1 monthSabbatical
Sabbatical in Central America, Asia and Africa
Apr 2021 - Jul 2022
1 year 4 months Switzerland
Senior Frontend Engineer
Ricardo
- Biggest marketplace in Switzerland (~1.2M active users per week)
- My main focus was code quality, user and developer experience. Over the years the cross functional teams I have been working in were successfully delivering features that resolved in conversion and revenue gains.
- The technical side:
- Complete rewrite of the whole website to React
- Migration to TypeScript and Next.js
- Multiple Micro Frontends: Next.js, React, Redux, Babel, Webpack, SCSS
- Component library: Storybook, Material-UI
- Backend-for-Frontend: NodeJS, Express, REST APIs
- Testing tools: Jest, (React) Testing Library, Cypress, ESLint
- Analyzing & monitoring Core Web Vitals to improve page speed and SEO
- Researching and evaluating new tools, libraries and frameworks and creating proof of concepts: Next.js, GraphQL, ESLint, react-query, ts-prune, Playwright, …
- Error monitoring: Sentry, Prometheus
- Other:
- Accessibility improvements
- Mentoring other Frontend developers
- AB tests using LaunchDarkly
- Tools:
- Asana, Notion, VSCode, Github, Launchdarkly, Google Analytics
Oct 2019 - Mar 2021
1 year 6 months Switzerland
Frontend Engineer
Ricardo
- Biggest marketplace in Switzerland (~1.2M active users per week)
- My main focus was code quality, user and developer experience. Over the years the cross functional teams I have been working in were successfully delivering features that resolved in conversion and revenue gains.
- The technical side:
- Complete rewrite of the whole website to React
- Migration to TypeScript and Next.js
- Multiple Micro Frontends: Next.js, React, Redux, Babel, Webpack, SCSS
- Component library: Storybook, Material-UI
- Backend-for-Frontend: NodeJS, Express, REST APIs
- Testing tools: Jest, (React) Testing Library, Cypress, ESLint
- Analyzing & monitoring Core Web Vitals to improve page speed and SEO
- Researching and evaluating new tools, libraries and frameworks and creating proof of concepts: Next.js, GraphQL, ESLint, react-query, ts-prune, Playwright, …
- Error monitoring: Sentry, Prometheus
- Other:
- Accessibility improvements
- Mentoring other Frontend developers
- AB tests using LaunchDarkly
- Tools:
- Asana, Notion, VSCode, Github, Launchdarkly, Google Analytics
Sep 2018 - Sep 2019
1 year 1 month Switzerland
Junior Frontend Engineer
Ricardo
- Biggest marketplace in Switzerland (~1.2M active users per week)
- My main focus was code quality, user and developer experience. Over the years the cross functional teams I have been working in were successfully delivering features that resolved in conversion and revenue gains.
- The technical side:
- Complete rewrite of the whole website to React
- Migration to TypeScript and Next.js
- Multiple Micro Frontends: Next.js, React, Redux, Babel, Webpack, SCSS
- Component library: Storybook, Material-UI
- Backend-for-Frontend: NodeJS, Express, REST APIs
- Testing tools: Jest, (React) Testing Library, Cypress, ESLint
- Analyzing & monitoring Core Web Vitals to improve page speed and SEO
- Researching and evaluating new tools, libraries and frameworks and creating proof of concepts: Next.js, GraphQL, ESLint, react-query, ts-prune, Playwright, …
- Error monitoring: Sentry, Prometheus
- Other:
- Accessibility improvements
- Mentoring other Frontend developers
- AB tests using LaunchDarkly
- Tools:
- Asana, Notion, VSCode, Github, Launchdarkly, Google Analytics
Sep 2016 - Aug 2018
2 years New Zealand
Work and Travel
- I built my own blog with React 16, Webpack 4, Jest, ESLint, Stylelint, SCSS
Dec 2014 - Aug 2016
1 year 9 months Germany
Frontend Developer
move elevator GmbH
- Creating an own framework with ECMAScript 6 and SCSS based on Bootstrap 3 for our client Coca Cola and implementing several Websites using it
Sep 2014 - Nov 2014
3 months Dresden, Germany
Web Developer
Heimrich & Hannot
- Creating websites with Contao, PHP, HTML, LESS and jQuery
Jan 2014 - Aug 2014
8 months Canada
Work and Travel
- Volunteering on farms, for handicraft businesses and families
Jan 2011 - Jan 2014
2 years 1 month Dresden, Germany
IT System Administrator
Fraunhofer research institute IVI
- First contact with web development during creation of an intranet with Joomla
Languages
German
Native
English
Advanced
Education
Oct 2008 - Jun 2012
University of Cooperative Education Dresden
Diploma Engineer · Information technology · Dresden, Germany
Certifications & licenses
Driving license category B (cars)
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