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London - EXCELLENT, NEGOTIABLE Contract Posted by: Rothstein Recruitment Ltd Posted: Friday, 23 January 2026
 
 
Applicants must be eligible to work in the specified location

Application Support Analyst (L2/L3) - SQL & Powershell - Banking

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.

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

Desirable

  • 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
London, UK
IT, Finance
Rolling Contract
ASAP (Within reason)
EXCELLENT, NEGOTIABLE
Rothstein Recruitment Ltd
Tom Cove 
JS/MRL/TC/APPSUPP3
23/01/2026 12:00:44
About Rothstein Recruitment Ltd

Rothstein Recruitment Ltd is an Award Winning Recruitment Agency with over 30 years in the IT Industry. We specialise in everything IT – From Development and Infrastructure to RPG and the AS400.


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