Summary
Overview
Work History
Education
Skills
Timeline
Generic

SHERINA GIFTLIN RAJ

Brampton,ON

Summary

Proactive and goal-oriented professional with 12+ years of experience in roles such as Middleware/DevOps/Cloud Engineer. Excellent time management and problem-solving skills. Swift capacity to learn and apply new skills. Committed to leveraging these qualities to drive team success and contribute to organizational growth. Known for collaborative approach and unwavering commitment to excellence.

Overview

13
13
years of professional experience

Work History

Middleware Administrator/DevOps Engineer

Cognizant Technologies Solutions
03.2018 - Current
  • Installed and configured WebSphere Application Server Network Deployment on Linux
  • Worked on WebSphere MQ 6.1 and migrated to WebSphere MQ 7.x
  • Involved in migration of WebSphere 7.1 to WebSphere 8.5 as WAS technical resource and planned timeline activities
  • Created sustainable environments for batch operations by analyzing and debugging the out of memory issues in WAS 8.5 by using heap analyzer and thread analyzer
  • Upgraded IBM HTTP WebServer and Plug-ins from 7.x to 8.5
  • Worked on ikeyman and Java key store to generate digital certificates for SSL communication between servers and applications
  • Worked with Akamai to resolve brute force attack on public facing applications
  • Applied fix packs to resolve security vulnerabilities and out of memory (OOM) issues
  • Configured single sign-on and policies to authenticate and authorize users
  • Created LDAP tree for new application to authenticate users
  • Worked day-to-day activities on servers such as WebSphere, WebSeal, LDAP, Apache, Tomcat on AIX 7.1 and Linux 7.10 operating systems
  • Part of design team responsible for migrating legacy applications and infrastructure to OCP Coud.
  • Created pipelines for Continuous Integration/Continuous deployments (CI/CD) using GIT, Jenkins, Ansible, Docker and Kubernetes.
  • Experience in creating, managing and administering Docker images and containers.
  • Experience in monitoring using Prometheus and Grafana, alerting using a slack channel.
  • Experience with user management and software installation and updates with Ansible on Linux servers
  • Worked on troubleshooting issues with containers, images and CI/CD pipelines.
  • Provided 24/7 production support
  • Maintained up-to-date documentation for all middleware configurations and procedures.
  • Participated in cross-functional projects, providing valuable input on middleware-related matters.
  • Conducted regular system audits from Deloitte, identifying areas for improvement or optimization.
  • Developed custom scripts to automate routine tasks, reducing manual intervention requirements.
  • Established monitoring protocols to proactively identify potential bottlenecks or failures.
  • Provided 24/7 on-call support for critical systems, ensuring high availability and rapid issue resolution.
  • Reduced system downtime for critical applications by implementing robust monitoring and alerting tools.
  • Coordinated disaster recovery planning and execution, ensuring business continuity in emergency situations.

WebSphere/JBoss Administrator

Cognizant Technologies Solutions
05.2017 - 02.2018
  • Installed and configured JBoss Enterprise Web Server and JBoss Enterprise Application Servers and integrated on Linux
  • Deployed enterprise applications in the JBoss and WebSphere environments
  • Worked on the end to end performance related issues
  • Installed and configured AppD and Splunk agents in the SIT and prod
  • Worked on the performance tuning of the SIT and Prod environments
  • Responsible for administering WebSphere Application Servers and IHS Webservers
  • Deployed new builds and recycled the environment
  • Monitored for Application core dumps or forced thread dumps to check for system objects using thread analyzer
  • Enabling SSL on Webservers and App servers to make URLs secure
  • Worked on setting up SSH between the critical servers in the SIT, Dev and prod servers
  • Worked with RedHat on the long ongoing issues with related to JBoss environments
  • Hands on experience on the Tomcat and Apache servers
  • Worked closely with Network, DB, application and other teams for new built projects
  • Troubleshooting of WebSphere application server and application slowness issues

System Engineer (IBM Sterling Connect: Direct)

Cognizant Technologies Solutions
06.2015 - 04.2017
  • Resolved issues and escalated problems with knowledgeable support and quality service.
  • Resolved complex technical issues through effective problem-solving techniques and root cause analysis.
  • Improved system efficiency by implementing and optimizing hardware and software components.
  • Created comprehensive documentation for system configurations, procedures, and best practices to facilitate knowledge sharing among team members.
  • Connect: Direct installation, maintenance and troubleshooting
  • End-to-End File transfer protocol methods
  • Provided 2nd and 3rd level technical support and troubleshooting to internal and external clients.
  • Oversaw development and maintenance of organization computer systems and intranet.

Production Support Analyst

Cognizant Technologies Solutions
11.2011 - 05.2015
  • Installed and configured WebSphere Application Server Network Deployment, Express, 6.0, 6.1, 7.0 on Sun Solaris, Linux and Windows 2003
  • Worked extensively on the data center migrations as Manager, Infrastructure Lead and WAS technical resource on various firm wide critical application
  • Installed and configured IBM Web Server 6.0 and 6.1 on Linux, and UNIX
  • Responsible for administering WebSphere Application Servers and IHS Webservers
  • Implemented horizontal and vertical clustering of application servers for achieving workload management (WLM)
  • Spearheaded the implementation of a robust incident management process, minimizing the impact of issues on business operations.
  • Reduced processing time by analyzing job schedules and implementing appropriate modifications.
  • Implemented regular backup procedures as well as disaster recovery plans ensuring minimal loss during unexpected events.
  • Participated in periodic audits carried out by internal or external parties achieving consistently satisfactory results.
  • Developed comprehensive documentation to support knowledge transfer among team members, reducing reliance on specific individuals.
  • Identified root causes of recurring problems to implement effective solutions.
  • Increased system stability by conducting thorough root cause analysis and implementing preventive measures.
  • Collaborated with cross-functional teams to develop strategies for improving overall production performance.
  • Established strong relationships with vendors to secure timely support services when needed for critical issues resolution.
  • Reduced downtime with proactive monitoring, troubleshooting, and maintenance of production systems.
  • Collaborated with upper management to drive strategy and implement new processes.
  • Enabled SSL over IHS/EWS Webservers to make URLs secure
  • Used scripting tools such as wsadmin and twiddle to get data from application servers
  • Worked as Manager, Infrastructure Lead and Technical resource for WebSphere and portal server projects in data center migration
  • Worked on ikeyman for generating digital certificates for authentication purposes
  • Resolved issues working with cross-departmental teams; customer support, application developers, vendor IT contacts, network and database administrators
  • Monitored and Configured WAS servers diagnosed and resolved WAS issues and failures
  • Worked with Akamai on security concerned issues
  • Configured LDAP Servers and various LDAP tools are used to manage data in LDAP
  • Used SiteMinder for single sign-on, Policy Servers and Web agent servers are configured to authenticate and authorize users
  • Troubleshooting errors both Application & JVM, also analyzed heap/core plus error logs – configured tuned JVM for optimum performance
  • Performed application and JVM performance monitoring using IBM Tivoli Performance monitoring tool
  • Used Log Analyzer to monitor WebSphere Applications and tuned the environment accordingly like changing the JVM Heap, Connection Pool sizes
  • Involved in investigating the problem, troubleshooting and resolving application and configuration issues
  • Installed the fix packs on Application Server to fix OOM and bugs
  • Provided 24/7 production support

Education

MBA - Technology Management

Anna University

The Bachelor of Technology (BTech) - Information Technology

Anna University
06.2011

Skills

  • Middleware - IBM WebSphere Application Server (ND) 8x,7x, IBM WebSphere Portal server 6x, IBM WebSphere MQ 6x, JBoss EAP 51/512, Tomcat 85, Adobe AEM 61 IBM Content Manager
  • Kubernetes, Docker, Jenkins, GIT, Ansible, Red Hat OpenShift
  • Operating Systems - AIX 7x, Red Hat Enterprise Linux 7x,6x
  • Monitoring Tools - Tivoli Performance Viewer, Thread Analyzer, Log Analyzer, AppDynamics, Wily Introscope, Tivoli Identity manager, Tivoli Access Manager
  • Web Servers - IBM HTTP Server, Apache, JBoss Webserver
  • Scripts - Shell
  • Microsoft Tools - PowerPoint, Word, Excel, Access, MS Project, MS Visio
  • Training and mentoring
  • Disaster Recovery Planning
  • Quick Learner
  • Team building
  • Incident Management
  • Vendor coordination
  • Network Troubleshooting

Timeline

Middleware Administrator/DevOps Engineer

Cognizant Technologies Solutions
03.2018 - Current

WebSphere/JBoss Administrator

Cognizant Technologies Solutions
05.2017 - 02.2018

System Engineer (IBM Sterling Connect: Direct)

Cognizant Technologies Solutions
06.2015 - 04.2017

Production Support Analyst

Cognizant Technologies Solutions
11.2011 - 05.2015

MBA - Technology Management

Anna University

The Bachelor of Technology (BTech) - Information Technology

Anna University

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SHERINA GIFTLIN RAJ