Mani Sarkar is a passionate Java/JVM developer currently living and working in London, UK, an LJC Associate, and an LJC Advocate to the @adoptopenjdk & @adoptajsr programs, JCP Member, OpenJDK contributor (submitted a number of patches), active member of a number of developer communities, speaker, blogger, and tweets interesting topics. Contributor to the Adopt OpenJDK and sister projects like Betterrev. He sees himself working in the areas of core Java, JVM, JDK, Hotspot, Nashorn and Performance Tuning. In his free time he also works on open-source projects one of them being in relation to RESTful APIs, others can be found on his personal github and bitbucket accounts. He is also an advocate of software craftsmanship principles like BDD and TDD, practices like pair-programming & collaborations – fervent user of SonarQube, analysing code quality on a regular basis. A regular attendee and presenter at many talks, conferences and hands-on-workshops in and around the UK and other parts of Europe.