At Emarsys i gained experience with parallel processing on large web server farms with load balancing and high availability systems and strong knowledge of big database instances (+1M tables). Involved in designing, implementing and testing large enterprise applications. Initiated memcache at emarsys, to manage the daily load on their database instances. Analyzed existing job scheduler, standardized and built a new one, who distributed the work by depending on the load of each node. Provided trainings to the customer service. Worked on the back-end of the existing application, using PHP Profiling to make performance improvements as well as fixing bugs and implementing new features like behavior targeting and social media integration.