Job Description

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The Senior Application Support Engineer (L3) is responsible for providing advanced production support for critical enterprise applications built on the .NET platform with Oracle databases. This role requires strong hands‑on development expertise, deep troubleshooting skills, and the ability to independently investigate, diagnose, and resolve complex production issues. The engineer will act as a subject‑matter expert, ensuring application stability, performance, and reliability in a high‑availability environment.

Provide Level 3 production support for mission‑critical .NET applications, including 24x7 on‑call support as required.
Independently analyze, troubleshoot, and resolve complex production incidents, including performance issues, data discrepancies, and system failures.
Perform deep root cause analysis (RCA) for recurring issues and document findings with corrective and preventive actions.
Collaborate with L1/L2 support teams to guide issue triage, escalation, and resolution.
Act as a strong hands‑on .NET developer, capable of debugging application code, identifying defects, and implementing fixes.
Analyze application logs, stack traces, memory dumps, and thread dumps to diagnose issues.
Develop and deploy code fixes, patches, and enhancements with minimal production impact.
Ensure adherence to coding standards, secure coding practices, and performance best practices.
Write and analyze complex Oracle SQL queries to investigate data issues, validate business logic, and troubleshoot production defects.
Perform data analysis and reconciliation to resolve data integrity and processing issues.
Identify and tune inefficient SQL queries and database interactions impacting application performance.
Work closely with DBAs on indexing strategies, execution plans, and database‑related incidents.

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