Teja Adusumalli

E-mail: acd8tk@r.postjobfree.com

Mobile: 415-***-****

OBJECTIVE

Looking for a challenging role that allows me to leverage my technical skills, deliver on my job responsibilities and further enhance my skills to achieve a fast-paced career growth.

HIGHLIGHTS

● A highly motivated and skilled professional with over 6 years of experience in building and managing highly complex technical solutions, with interest towards solving challenging problems and exploring new technologies.

● Certified Apache Hadoop Administrator with 2 years of working experience on Hadoop.

● Extensive Experience working as a Hadoop Administrator

● Good working knowledge on planning, Implementing, patching, upgrading and supporting Hadoop, Hive and good understanding of other components like HBase, HCatalog, Pig, Oozie and Sqoop in Hadoop eco system.

● Good understanding of system, network and storage architectures, distributed computing, high availability, security, performance tuning, disaster recovery and business continuity planning with Focus on automation and process improvements.

● Expertise in code profiling, thread dump and deadlock analysis, heap usage analysis and identify bottlenecks at various levels ranging from application, OS and network level.

● Good Experience working as J2EE Systems Administrator handling different applications servers like Jetty and Tomcat.

● Worked on Handling Application servers on Virtual Environments like VMWare.

● Experience working with Applications deployed across large-scale clustered servers.

● Deployed and monitored J2EE applications in a Tomcat, Mule ESB and Gemfire Environments.

● Works closely with Engineering team to fix/ tune the bad MR jobs for better performance.

● Installation and testing of OS upgrades, patches.

● Involved in system design and Capacity planning.

● Involved in 24X7 On-Call Production support.

● Working Experience with Onshore and Offshore teams

● Desire to learn new technologies and flexible to work

TECHNICAL SKILLS

Softwares : Hadoop 1.x, 2.x, Hue, Hive, Storm, Kafka, Oozie, Zookeeper, Java, SalesForce, SQL, Force.com, Tomcat, Jetty, Spring, Mule ESB, Gemfire, RabbitMQ, Tomcat, JDBC, JUnit

Database : MySQL, Oracle, PostgreSQL

Web : HTML, CSS, JavaScript, XML, REST

Tools : Git, Puppet, Eclipse, VSphere, Nagios, Ganglia, MS Office, and & Shell Scripting.

OS : Windows, Mac, Linux.

PROFESSIONAL EXPERIENCE

Hadoop Platform Engineer, Excel Big Data Jan 2013 - Till Date

Accomplishments/Contribution:

● Collaborated with Systems and Networks in Installing, configuring and maintaining Apache Hadoop to hundreds of nodes on Open Compute compliant hardware.

● Support and maintain 4PB, 120 node Hadoop cluster based on Hortonworks HDP 1.3.3 and 2.0.

● Active participation in discussions sizing the cluster based on the business needs.

● Participated in sizing discussions (Disks/Memory/CPU/NICs) of various servers for Hadoop daemons with Infrastructure teams.

● Used Hortonworks Ambari to install, configure and maintain Hadoop cluster with manual intervention wherever necessary.

● Worked with Engineering teams to find the needs and roll out new features/ products .

● Works closely with Engineering team to fix/tune the bad MR jobs for better performance.

● Collaborated with Hortonworks consultants to Benchmark and tune cluster for better performance.

● Proficiency in configuring FAIR Scheduler for scheduling Jobs.

● Configured Hadoop Clusters with Rack Awareness.

● Working on developing tools to collect metrics for MR resource utilization .

● Worked on documentation of end-to-end Hadoop Infrastructure setup.

● Worked on preparing Hadoop Operations Guide that aid Operations Team support day-to-day activities timely and efficiently.

● Working on documenting the design docs and build procedure for hadoop clusters.

● Take care of 24x7 on-call support by handling all Production issues along with regular project work.

● Continuously works on Automating day-to-day tasks

Environment: HDFS, Map Reduce, Hue, Ambari, Storm, Kafka, Hive, Oozie, Cent OS, Java, MySQL, .

Sr Java/J2EE Administrator, Citigroup Oct 2010 - Dec 2012

Accomplishments/Contribution:

● Collaborated with various Infrastructure teams to build Clustered environment for high availability, scalability and tune it for performance.

● Provided 24X7 production support by partnering with offshore team, for complex business processing and persistence layers in Mule ESB using Java, Spring, Gemfire, RabbitMQ and JDBC API, interacting a number of boundary systems with onsite-offshore model.

● Worked on Deploying and Tuning the Integrations, Gemfire Functions and environment for performance

● Installation and testing of all upgrades, patches, and maintenance updates at the Operating System level.

● Dealt with troubleshooting issues like Out of Memory (OOM), High CPU Utilization, Server Hang.

● Analyzing the various performance bottlenecks in Java code, Identifying memory leaks, detect deadlocks and race conditions.

● Secured the environment with two way ssl cert pinning.

● Partnered with various teams in resolving production issues

● Regular Capacity Planning and grooming using monitored metrics.

● Followed agile methodology and collaborated extensively with enterprise architecture groups, business teams.

● Configured and deployed applications in various work environments like System Test, Pre Production and Production.

● Managed virtual machines on VMWare ESXi platform using VSphere client, configured DRS affinity rules, VMotion and performed OS patching

● Generated graphs and reports for Dashboard and Reporting modules.

Environment: J2EE, Mule ESB, Gemfire,eclipse, Spring, Hibernate, RabbitMQ, Oracle R12, Log4J, JUnit, JMeter, FTP.

Java Developer, Bharti AXA May 2008 - Sep 2010

Accomplishments/Contribution:

● UI development of Getting Started page and driver page using JSP, JavaScript, CSS, XML and Struts.

● Designed spring components using MVC architecture.

● Developed DAO's(Data Access Objects) in the persistence layer.

● Developed JUnit Test Cases for Unit Testing.

● Test cases preparation and mapping them with the requirements

● Test Execution, validation and Documentation.

● Deployed the project on jetty application server

● Responsible for fixing application bugs and maintenance builds.

● Coordinated release with release engineers and project manager.

● Involved in troubleshooting performance issues.

● Provided post production support for the system and implemented bug fixes during post implementation.

Environment: Core Java, JSP, Servlets, Spring, Java Script, SQL, Oracle, TOAD, HTML, Eclipse, Clearcase, Jetty, Windows, Linux, MySQL 4.1, JDK1.5, Apache Tomcat5.

EDUCATION

Bachelors of Technology in Computer Science JNTU, AP, India

(Teja Adusumalli)

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