Shiva Achari has over 8 years of extensive industry experience and is currently working as a Big Data architect in Teradata. Over the years, he has architected, designed, and developed multiple innovative and high-performing large-scale solutions such as distributed systems, data center, Big Data management, SaaS cloud applications, Internet applications, and data analytics solutions.

He is currently writing a book on Hadoop essentials, which is based on Hadoop, its ecosystem components, and how we can leverage the components in different phases of the Hadoop project life cycle.

Achari has experience in designing Big Data and analytics applications, ingestion, cleansing, transformation, correlating different sources, data mining, and user experience using Hadoop, Cassandra, Solr, Storm, R, and Tableau.

He specializes in developing solutions for the Big Data domain and possesses a sound hands-on experience on projects migrating to the Hadoop world, new development, product consulting, and POC. He also has hands-on expertise on technologies such as Hadoop, Yarn, Sqoop, Hive, Pig, Flume, Solr, Lucene, Elasticsearch, Zookeeper, Storm, Redis, Cassandra, HBase, MongoDB, Talend, R, Mahout, Tableau, Java, and J2EE.

Shiva has expertise in requirement analysis, estimations, technology evaluation, and system architecture, with domain experience of telecom, Internet applications, document management, healthcare, and media.

Currently, he supports presales activities such as writing technical proposals (RFP), providing technical consultation to customers, and managing deliveries of Big Data practice group in Teradata.

He is active on LinkedIn at http://in.linkedin.com/in/shivaachari/.

Pavan Kumar Polineni is working as Analytics Manager at Fantain Sports. He has experience in the fields of information retrieval and recommendation engines. He is a Cloudera certified Hadoop administrator. His is interested in machine learning, data mining, and visualization.

He has a Bachelor's degree in Computer Science from Koneru Lakshmaiah College of Engineering and is about to complete his Master's degree in Software Systems from BITS, Pilani. He has worked at organizations such as IBM and Ctrls Datacenter. He can be found on Twitter as @polinenipavan.

Uchit Vyas is an open source specialist and a hands-on lead DevOps of Clogeny Technologies. He is responsible for the delivery of solutions, services, and product development. He explores new enterprise open source and defining architecture, roadmaps, and best practices. He has consulted and provided training on various open source technologies, including cloud computing (AWS Cloud, Rackspace, Azure, CloudStack, Openstack, and Eucalyptus), Mule ESB, Chef, Puppet and Liferay Portal, Alfresco ECM, and JBoss, to corporations around the world.

He has a degree in Engineering in Computer Science from the Gujarat University. He worked in the education and research team of Infosys Limited as senior associate, during which time he worked on SaaS, private clouds, virtualization, and now, cloud system automation.

He has also published book on Mule ESB, and is writing various books on open source technologies and AWS.

He hosts a blog named Cloud Magic World, cloudbyuchit.blogspot.com, where he posts tips and phenomena about open source technologies, mostly cloud technologies. He can also be found on Twitter as @uchit_vyas.

Yohan Wadia is a client-focused virtualization and cloud expert with 5 years of experience in the IT industry.

He has been involved in conceptualizing, designing, and implementing large-scale solutions for a variety of enterprise customers based on VMware vCloud, Amazon Web Services, and Eucalyptus Private Cloud.

His community-focused involvement enables him to share his passion for virtualization and cloud technologies with peers through social media engagements, public speaking at industry events, and through his personal blog at yoyoclouds.com.

He is currently working with Virtela Technology Services, an NTT communications company, as a cloud solutions engineer, and is involved in managing the company's in-house cloud platform. He works on various open source and enterprise-level cloud solutions for internal as well as external customers. He is also a VMware Certified Professional and vExpert (2012, 2013).