THENMOZHI K
Chennai
Summary
Dynamic and result-driven Application Support & UNIX System Administrator with over 10 years of experience supporting critical banking and financial applications. Strong expertise in Linux/AIX administration, shell scripting, SQL troubleshooting, production support, and ITIL processes. Proven ability to resolve high-priority issues, ensure system stability, and improve application performance.
Overview
11
11
years of professional experience
1
1
Certification
Work History
Technology Support Analyst
Barclays Global Service Center
11.2023 - Current
- Resolved software bugs through collaboration with end-users, release managers, and development teams.
- Utilized various software and tools to streamline processes and optimize performance.
- Developed comprehensive support documentation, including knowledge base articles for user guidance.
- Provided L2 application support for investment banking systems to ensure seamless operations.
- Monitored production applications daily to promptly address potential issues.
- Rectified P&L, trade reconciliation, data quality issues, and finance reporting application issues efficiently.
- Facilitated end-of-month and quarter financial closings by ensuring operational continuity.
- Conducted root cause analysis and worked with developers on bug fixes and system enhancements.
- Worked on DCR events and critical application migration activities.
- Handling ITIL methodologies, such as Change, Incidents, Problem Record, and Service Management.
- Collaborated with development teams to ensure system stability, upgrades, and enhancements.
- Created user guides and delivered training on system functionalities to product controllers.
- Monitored system performance to identify areas for improvement.
- Communicated effectively with users to understand technical needs and challenges.
- Assisted in development of disaster recovery plans in case of system outages or data loss scenarios.
- Analyzed logs generated by servers or applications to identify any potential issues or errors.
- Monitored server performance and disk space usage to ensure optimal operation of all services.
Analyst Developer
Barclays Global Service Center
Chennai
11.2021 - 11.2023
- Conducted patch management for Linux/AIX servers and applications, including Java and DB.
- Identified and mitigated vulnerabilities within server environments.
- Coordinated cross-team efforts to address JAVA/Embedded Java and CVE vulnerabilities.
- Decommissioned outdated physical servers, virtual servers, and DB instances efficiently.
- Restarted Firco components during transaction failures to maintain operational integrity.
- Developed shell scripts to automate Tomcat service restarts.
- Raised change requests and incidents in Service First to streamline issue resolution.
- Executed MQ V9 build, deployment, testing, and migration processes.
- Collaborated with cross-functional teams to improve operational efficiency.
- Analyzed data trends to support decision-making processes.
- Developed dashboards to visualize key performance indicators for stakeholders.
Infrastructure Analyst
Barclays GSC
Chennai
04.2019 - 11.2021
- Handled server operations for Linux infrastructure across RHEL 5.x, 6.x, and 7.x.
- Managed all resources and services configured in VERITAS Cluster Service (VCS).
- Executed immediate break-fix actions for P1 and P2 issues, joining recovery calls with cross-functional teams.
- Oversaw access management to Unix hosts utilizing Vastola and Power Broker.
- Conducted proactive file system management, monitoring, and housekeeping activities.
- Performed regular automated and manual patching on more than 12,000 servers, addressing failures within SLA.
- Collaborated in Change Management meetings to implement necessary changes effectively.
- Prepared Root Cause Analysis reports for high-severity incidents for management review.
- Monitored network security protocols to protect sensitive information.
- Supported troubleshooting efforts for hardware and software issues.
- Trained junior staff on infrastructure policies and best practices.
Tech Lead
Cognizant Technology Solutions
Chennai
03.2015 - 05.2019
- Managed patching of various servers on Linux, AIX, and VERITAS upgrades.
- Executed package installations in Linux using RPM and YUM.
- Configured NFS and YUM servers on Red Hat Linux to enhance functionality.
- Automated day-to-day activities to improve operational efficiency.
- Elevated cases to Red Hat, VMware, and IBM to identify and resolve root causes.
- Migrated LPARS between frames, applying OS and TL patches on AIX servers.
- Maintained VERITAS clusters, administering service groups and verifying configurations.
- Performed storage migrations from Hitachi to EMC across Linux and AIX systems.
- Resolved technical issues related to software design and implementation.
- Provided technical support for end users when required.
Education
B.E. - Computer Science Engineering
Karpaga Vinayaga College of Engineering & Technology (Anna University)
Chennai01.2014
Skills
- Application support and incident management
- Root cause analysis
- Linux and AIX administration
- Virtualization technologies
- Windows operating systems
- Container orchestration with OpenShift
- SQL database management
- Oracle database administration
- Shell scripting and automation
- ServiceNow ticketing system
- JIRA project management
- BMC Remedy support
- Docker containerization
- Kubernetes deployment and management
- Version control with Git and Bitbucket
- Netcool monitoring solutions
- Autosys job scheduling
- Vulnerability mitigation
- Systems monitoring
- Effective communication
- Process automation
Certification
- RHCSA
- RHCE (Red Hat)
- RedHat OpenShift Admin (DO280)
- ITIL Foundation Certification
Timeline
Technology Support Analyst
Barclays Global Service Center
11.2023 - Current
Analyst Developer
Barclays Global Service Center
11.2021 - 11.2023
Infrastructure Analyst
Barclays GSC
04.2019 - 11.2021
Tech Lead
Cognizant Technology Solutions
03.2015 - 05.2019
B.E. - Computer Science Engineering
Karpaga Vinayaga College of Engineering & Technology (Anna University)