We have an existing Java/Spring/SpringSocial/MySQL/Apache/Tomcat/JQuery-web-based system that is in pre-production mode. The application logic requires implementation of requests/invites/messaging via social network channel. Due to VK API constraints (web-based app vs IFrame-based app) looking to create an IFrame layer for the VK-based users of the system. Bugdet is flexible. Looking for highly reliable developer. High potential for the future. We speak both English and Russian.