Saas using ReactJS as the front end

We are looking for an experienced Developer / Engineer who will be responsible for building the ‘user-side’ of our web application - the v1 is what we are building now.

We expect you to be a tech-savvy professional, who is curious about new digital technologies and aspires to combine usability with visual design.

Front-end Developer responsibilities are:
Develop user-friendly web pages, using ReactJS
Optimize applications for maximum speed and design (ONLY desktop, mobile is NOT included)
Identifying and troubleshooting Software Design problems.
Help us to achieve code that is clean, highly maintainable and well tested, as necessary develop and unit test the most strategic and complex developments.
If necessary, work together with back-end developers to improve usability and user interaction
Assist back-end developers with coding and troubleshooting

Front-end Developer requirements are:
3+ years' experience of working on a Front-end Developer position
Significant experience with markup languages, ReactJS, Jquery, JavaScript, CSS and jQuery
Good use of branching strategies and git repositories
Knowledge of browser testing and debugging
BSc degree in Computer Science or other relevant area
Ability to work full time on this project (40 hours per week) starting immediately for the next few months