SUMMARY

• Experienced in Cassandra, Kafka,Spark,Solr,Splunk,Linux,Shell - Scripting wif a proven track record of delivering client solutions and solving real world problems under pressure wif an unparalleled degree of customer satisfaction. I administer business critical solutions utilizing a variety of platforms including Cassandra, kafka,Spark,Solr, Linux and the SQL Server. I have experience wif Shellscript,Opscenter,Splunk,Nagios Core,solace,oracle gloden gate,Centralstation,Espresso.
• Currently administrating Big Data solutions using NOSQL technologies such as Apache Cassandra,DSE cassandra on RHEL servers. Responsible for
• Monitoring Opscenter, Nagios, monitoring solace routers, deploying and maintaining applications using Unix, Shell scripting,SQL.
• Monitoring tickets using Centralstation,Espresso.
• Proficient on CASSANDRA,KAFKA,SOLR,SPARK,SPLUNK,UNIX COMMANDS,SHELLSCRIPT & SQL sever
• Coordinating and interacting wif team members and client support team
• Resolving various user queries coming through several Medias.
• Providing production support to applications and maintaining the S.L.A
• Ability to achieve development tasks wif nominal supervision and possess strong problem analysis skills, wif ability to follow project standard & procedure.
• Handled projects and efficiently delivered the required applications in a very systematic way

TECHNICAL SKILLS

Operating System: Linux 7

Database: Apache Cassandra 2*,3*/DSE Cassandra 4*,5*

Languages: Unix, Shell Scripting

Ticketing Tools: CentralStation,Espresso

Messaging System: Kafka, Solace

Search Processing Language: Splunk

Tools: Opscenter 5.2.4/6.1,Nagios Core,Super PuTTY 1.3.0.11,TOAD 9.7.2.5,VisualVM,Splunk,Eclipse

PROFESSIONAL EXPERIENCE

Sr. S/W Engineer

Confidentialies

Responsibilities:

• Administered Apache - Cassandra/DSE Cassandra wif Solr and Spark, Kafka,Splunk processes in Prod clusters including UAT/QA/STAGE/DEV.
• Involved in deployments, enhancements made in Cassandra Prod Clusters well as in UAT/DEV servers.
• Involved in Apache Cassandra/DSE Cassandra wif Solr/Spark setup.
• Involved in Opscenter Setup.
• Involved in CQLSH setup.
• Involved in all cql operations Add/Delete users, Grant permissions, altering ColumnFamilies,creating keyspaces
• Involved in creating Certificates .keystore/.truststore for SSL enabled.
• Involved in Data Refresh/Exoprt from one cluster to another cluster.
• Monitoring Cassandra nodes using several nodetool commands.
• Data Refresh done using sstableloader/JMX bulkload/copy from .csv file.
• Involved Bootstarpping/Decommissioning/Rebuilding DC/Adding a new node to cluster
• Involved Kafka/Zookeeper Setup on Different Flavours Including Apache,Horntonworks,Cloudera wif different versions.
• Involved in JMX setup for kafka.
• Involved in Producing/Consuming Messages through kafka.
• Worked wif different App teams on kafka issues.
• Involved in Creating/Deleting topics, Altering partitions/Replication Factor/Retention in Prod/UAT/DEV environments
• Woked wif Different App Team on fixing Cassandra/Solr/Spark/Kafka Issues.
• Primary Member to work on P1/P0 Incidents.
• Involved in Creating/Implementing/Executing several critical CRs.
• Involved in OEL patching for kernel Upgrade on Linux Servers.
• Maintaining more TEMPthan Thousand CASSANDRA nodes running on RHEL servers.
• Maintaining more TEMPthan Thousand KAFKA/ZOOKEEPER hosts.
• Worked on OpsCentre to monitor the Cassandra clusters in production/UAT/DEV environments.
• Worked on Splunk search for monitoring & handling log Services.
• Regularly attend & resolve the issues such as application outage, Issue impacting multiple users, Revenue impacting key function issues in the Crisis call.
• Escalate the issue & give necessary information to the development team to fix the bug.
• Resolving CentralStation Incidents,Requests,Tasks.
• Work closely wif the Business and Technology partners to drive immediate and long term resolution to production issues.
• To manage the data feeding through various upstream and check the filters while through checking code logics.
• Maintaining data flow of source to destination servers, server management and proactive monitoring of alerts,server processes administration .
• Involved in automation using shell script.
• Worked on Eclipse.
• Involved in daily health check-ups, maintained constant daily statistics reports,report card made to the client on daily basis.
• Maintained daily cron jobs running for several processes involved in UPSTREAM data flow to DOWNSTREAM.
• Involved in deployments and enhancement.
• Analyzed data mismatches between different Source files,daily flat files,trail files and our repository.
• Daily status meeting to meet the business goals and client expectations.

Confidential .

Architected to support application evolution

Responsibilies

• Administered Apache Cassandra 2.1 and Oracle Coherence 3.4/3.6.1 for providing GRID solutions in terms of data - cache management at cache level, to improve overall experience of end-clients by cutting down end-to-end transaction times.
• Involved in deployments, enhancements made in Cassandra clusters as well as in production servers
• Maintaining 70 CASSANDRA nodes & 300 production RHEL servers along wif QC and sandbox servers.
• Worked on OpsCentre to monitor the Cassandra clusters in production environments.
• Worked on Nagios core for monitoring & handling Hosts,Services.
• Regularly attend & resolve the issues such as application outage, Issue impacting multiple users, Revenue impacting key function issues in the Crisis call.
• Escalate the issue & give necessary information to the development team to fix the bug
• Worked extensively on Solace routers, to transmit data in terms of messages to multiple datacenters simultaneously.
• Resolving QC defects, providing solution to data mismatch.
• Give the status report of tickets to Manager of our department.
• Work closely wif the Business and Technology partners to drive immediate and long term resolution to production issues.
• To manage the data feeding through various upstream and check the filters while through checking code logics.
• Maintaining data flow of source to destination servers, server management and proactive monitoring of alerts,server processes administration .
• Administered loaders/listeners that move data eventually to L2 (Coherence), L3 (Cassandra) systems where data would be stored as per their cache-names .
• Involved in automation using shell script.
• Monitored Nagios alerts constantly to avoid inconsistencies and maintained effectiveness in 300 RHEL servers and Cassandra nodes.
• Worked on Visual VM and Eclipse.
• Involved in daily health check-ups, maintained constant daily statistics reports,report card made to the client on daily basis.
• Maintained daily cron jobs running for several processes involved in UPSTREAM data flow to DOWNSTREAM.
• Involved in deployments and enhancement made for GRID.
• Analyzed data mismatches between different Source files,daily flat files,trail files and our repository.
• Monitored Extracts,lags,trail file transactions using ORACLE GOLDENGATE.
• Daily status meeting to meet the business goals and client expectations.