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

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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

#J-18808-Ljbffr”, “datePosted”: “2026-04-11”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Rothstein Recruitment”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__402736076__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=33” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }
Company: Rothstein Recruitment
Apply for the Application Support Analyst (L2/L3) – SQL & Powershell – Banking
Location: London
Job Description:

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

#J-18808-Ljbffr…

Posted: April 11th, 2026