DBA

Manoj Kumar Ray

Cell phone: (M) +91-907*******

E-mail: ********.*******@*****.***

Prelude

Experienced in Cassandra, Kafka,Spark,Solr,Splunk,Linux,Shell-Scripting with a proven track record of delivering client solutions and solving real world problems under pressure with 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 with Shellscript,Opscenter,Splunk,Nagios Core,solace,oracle golden gate,Centralstation,Espresso.

Professional Experience Details

Currently administrating Big Data solutions using NOSQL technologies such as Apache Cassandra, DSE Cassandra on RHEL/ OEL servers.

Responsible for Monitoring Opscenter, Nagios, monitoring solace routers, deploying and maintaining Cassandra/kafka applications using Unix, Shell scripting, SQL.

Use Ansible to do the installation of Casandra and Kafaka across clusters.

Containerize Kafaka application using Docker.

Monitoring tickets using Service Now.

Proficient on Ansible, Cassandra, Kafka, SOLR, Spark, Splunk, Unix, Shell Script & SQL Server

Coordinating and interacting with 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 with nominal supervision and possess strong problem analysis skills, with ability to follow project standard & procedure.

Handled projects and efficiently delivered the required applications in a very systematic way

Employment History

Currently working as An Associate Operations Manager in Cognizant Technology Solutions,

Worked as a Sr. S/W Engineer in Tech Mahindra LTD Pune from July 2013-Feb 2016

Technical Details

Operating System : Linux 7

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

Languages : Unix, Shell Scripting

Config Management : Ansible

Containerization : Docker

Ticketing Tools : Service Now

Messaging System : Kafka, Solace

Log Analysis : Splunk

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

Project # 1

Name : GNCS-DBA

Organization : Cognizant Technology Solutions.

Team Size : 8

Technology : Apache Cassandra 2*/3*,DSE Cassandra 4*/5*,Linux 7,kafka

Tools : Opscenter 5.2.4/6.1.6, Splunk, Service Now, Eclipse, Spark, Solr, Docker, Ansible

Duration : June 2016 – Till Now

Project Details

GNCS-DBA is platform that provides storage, vending and processing components to deliver an end to end (from origination/system-of-record to the point of consumption) management solution for data .

Roles and Responsibilities

Administered Apache-Cassandra/DSE Cassandra with Solr and Spark, Kafka, Splunk processes in Prod clusters including UAT/QA/STAGE/DEV.

Involved in Apache Cassandra/DSE Cassandra with Solr/Spark setup using Ansible.

Involved in Opscenter Setup.

Involved in CQLSH setup.

Involved in deployments, enhancements of Cassandra in non-prod and prod clusters.

Involved in all CQL operations Add/Delete users, Grant permissions, altering ColumnFamilies, creating keyspaces

Involved in creating Certificates .keystore/.truststore to set up SSL clusters.

Involved in Data Refresh/ Export from one cluster to another cluster.

Monitoring Cassandra nodes using several node tool commands.

Data Refresh done using sstableloader/JMX bulk load/copy from .csv file.

Involved Bootstrapping/Decommissioning/Rebuilding DC/Adding a new node to cluster

Involved Kafka/Zookeeper Setup on Different flavors Including Apache, Hornton works, Cloudera with different versions.

Involved in JMX setup for kafka.

Involved in Producing/Consuming Messages through kafka.

Worked with different App teams on kafka issues.

Involved in Creating/Deleting topics, Altering partitions/Replication Factor/Retention in Prod/UAT/DEV environments

Worked with 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 than Thousand CASSANDRA nodes running on RHEL servers.

Maintaining more than 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 Service Now Incidents, Requests, Tasks.

Work closely with 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.

Project # 2

Name : GRID DATA LAYER

Client : AT&T

Organization : Tech Mahindra Ltd.

Team Size : 12

Technology : Cassandra 2.1,Linux 6.5,SQL server

Tools : Opscenter 5.2,Super PuTTY 1.3.0.11,Solace 7.1,TOAD 9.7.2.5,VisualVM,Remedy,Nagios Core

Duration : July 2013 – Feb 2016

Project Details

Grid Repository (GRID Repository of Information and Data ) is an AT&T platform that provides storage, vending and processing components to deliver an end to end (from origination/system-of-record to the point of consumption) management solution for data . Through GRID there has been fundamental change in the way data and information is managed and utilized at AT&T. GRID receives data from different applications within ATT .

GRID Repository consists of Cassandra, Coherence, Solace and ZooKeeper.

Cassandra

•Architected to provide HA and DR for all components

•Manage software, hardware and Data upgrades with 0 impact to availability

Coherence

•Architected to provide best in class performance for Read and for Writes

•Architected to provide Performance from Clients point of view.

Solace

•Architected to support application evolution.

•Vendor Neutrality

Roles and Responsibilities

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 with 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 with 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 there 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.

Personal Details

Name : Manoj Kumar Ray

Date of Birth : 12th November 1986

Nationality : Indian

Marital Status : Single

Languages Known : English, Hindi and Oriya

Strengths : Confident, hardworking and dynamic team player

Emil Id :********.*******@*****.***

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