Hari Hari

Results-oriented L2 Application Support Engineer with 4.8 years of experience in Banking and Financial Services (BFSI), supporting mission-critical applications in 24x7 production environments. Strong expertise in L2 application/production support, payment transaction monitoring, Oracle SQL and SQL Server query analysis, Linux/Unix, Shell Scripting, application and batch-job monitoring, log analysis, incident management and Root Cause Analysis (RCA). Experienced in troubleshooting transaction failures, validating backend data, managing P1/P2 incidents within SLA, and coordinating with development and infrastructure teams.

Knowledge of UPI, NEFT and RTGS payment-processing concepts and transaction support workflows.

L2 Application Support Engineer - Vertx Solutions Pvt Ltd (Client: Cognizant Technology Solutions) - Chennai

(2022-05 - 2025-11)

• Provided L2 production/application support for critical BFSI applications in a 24x7 environment, ensuring stable business and payment-processing operations.
• Monitored application alerts, production transactions, servers and batch jobs using Dynatrace and Shell Scripts; performed early detection and triage of failures.
• Supported troubleshooting of payment transactions and exceptions, including UPI, NEFT and RTGS-related processing concepts, status validation and transaction failures.
• Executed complex Oracle SQL and SQL Server queries for transaction validation, backend data checks, data inconsistency analysis and production troubleshooting.
• Performed database health checks and data-integrity validation to support accuracy and completeness of financial transactions.
• Conducted Linux/Unix server monitoring and application-log analysis to identify errors, performance bottlenecks and failure points.
• Developed and deployed Shell Scripts for repetitive monitoring, alerting and support activities, improving operational efficiency.
• Managed incident, service-request and change-request lifecycles in ServiceNow, following ITIL processes and agreed SLA timelines.
• Resolved P1/P2 incidents, led incident bridge calls and provided timely technical updates to stakeholders and management.
• Prepared detailed RCA documents for recurring and major production issues, identifying root causes and recommending preventive actions.
• Collaborated with development, infrastructure and business teams for troubleshooting, escalation, production fixes and deployment support.
• Supported backend data fixes and transaction validation to maintain integrity and completeness of high-volume financial transactions.

L2 Application Support Engineer - INS Data Services Pvt Ltd - Chennai

(2020-01 - 2021-03)

• Monitored critical system-health parameters including CPU, memory utilisation and API latency using Splunk and CloudWatch.
• Executed production releases, software deployments and sanity testing during scheduled maintenance windows.
• Created technical runbooks, knowledge-base articles and SOPs to standardize support activities.
• Coordinated between frontline support, L3 engineers and development teams and documented known errors to improve first-call resolution.

M.E. - Power Electronics & Drives - SVCET, Anna University (2020)

B.E. - Electrical & Electronics Engineering - JNNIE, Anna University (2017)