Application Support Analyst (L2/L3) - London

Overview

We are seeking a technically strong Application Support Analyst to join a production support team responsible for business-critical financial systems. This is a hands-on L2/L3 role focused on data investigation, SQL troubleshooting, scripting and automation , and resolving complex production issues at root-cause level.

This is not a monitoring or ticket-routing role. You will be expected to analyse problems, write scripts, fix data and processes, and improve system reliability.

Key Responsibilities

Provide L2/L3 production support for core applications and data flows
Investigate data and processing issues using advanced SQL (T-SQL / PL-SQL)
Perform data fixes, validation, reconciliations and performance analysis
Debug batch and real-time processes across Linux and Windows environments
Develop and maintain automation and tooling using PowerShell, Bash and/or Python
Investigate failed or delayed batch jobs and end-to-end processing chains
Work with developers and infrastructure teams on root cause and permanent fixes
Support releases, deployments and controlled changes into production
Participate in incident, problem and DR processes, including RCA

Essential Skills and Experience

Strong, hands-on SQL experience (complex queries, joins, stored procedures, data investigation)
Strong scripting skills in PowerShell, Bash, Python or similar
Experience supporting production financial systems in an L2/L3 capacity
Comfortable working directly on servers (Linux/Windows) to diagnose issues
Experience with batch processing and scheduled workloads (Control-M, Tidal, Autosys or similar is a plus)
Experience troubleshooting data pipelines, interfaces and downstream impacts
Proven ability to work independently and own issues through to resolution
Experience in asset management, custody, banking or trading environments
Exposure to data warehouses, regulatory reporting or valuation processing
Experience with monitoring tools (Splunk, Geneos, Dynatrace, etc.)
Understanding of MQ or message-based integrations