Front-end Developer a successful technological start-up offering a unique solution that helps online publishers maximize their advertising revenues is looking for a strong front-end developer, for building amazing client-facing user interfaces. The ideal candidate will have: •3+ years of relevant experience •Relevant academic degree or equivalent experience (e.g. 8200 alumni) •Proven experience in developing large scale client facing UI, along with UX aspects •Hands-on knowledge of modern UI prototyping and implementation tools, both on the client (JS) and server side. •Knowledge of React.js and/or full-stack schemas is a plus. •Past experience in the ad industry is a plus. •Basic knowledge in using graphic design tools (e.g. Photoshop, professional grade CSS) is a plus.