"Jonathan is seasoned expert, not only on front-end technical stacks that he knows in details but he is also mastering the team process and product lifecycle using Agile methodology. I had the please to work with him at Privowny where he brought a lot of expertise and also human skills to help use move forward the right way. I can recommend him to all companies that are willing to push things ahead on their front products by having on of the best senior guy in this area."
