ReactJS, expert: Strong understanding of React and its ecosystem. Helped maintain numerous open source React components and libraries (i.e, Fluxible React library).
HTML and CSS, expert: Detailed understanding of responsive design, accessibility, semantic markup, SEO and CSS animations. Extensive experience working with designers to build complex interactive web apps.
Operations, learning: Some experience with AWS, Heroku, Jenkins, Docker, and others.
PHP, fading: Built many previous sites and frameworks with LAMP stack, but have not done so in many years.