Harrington Starr
Application Support Engineer
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Application Support Engineer
Application Support Analyst – Trading & Post-Trade Platforms £90,000 London (Hybrid)
We’re hiring a high-calibre Application Support Analyst to join a global team supporting business-critical trading and post-trade platforms. This is a hands-on role at the centre of a fast-moving financial environment, ensuring the stability, performance, and integrity of systems spanning trading, clearing, settlement, and risk. You’ll work closely with front-office users, technology teams, and external vendors to resolve issues, improve platform reliability, and support the ongoing evolution of core systems.
The Role Own 2nd/3rd line support across trading and back-office platforms, ensuring high availability and rapid issue resolution Take full lifecycle ownership of incidents and outages, driving root cause analysis and permanent fixes Partner with development, infrastructure, and business teams to deliver seamless, end-to-end support Manage vendor relationships, exchange connectivity, upgrades, and technical client onboarding Support system enhancements, releases, and change initiatives across the platform landscape Deliver operational reporting including compliance, exchange reporting, and platform performance metrics Continuously improve support processes, tooling, and operational best practices
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What We’re Looking For Strong technical foundation across Linux/Unix and Windows environments, with solid database skills (SQL, PostgreSQL, MongoDB, Oracle) Scripting capability in Python or PowerShell for automation and operational tooling Good understanding of trading lifecycle processes (trading, clearing, settlement, post-trade flows) Experience supporting exchange connectivity, market data, and FIX protocols Familiarity with ITIL-based support environments, including incident, problem, and change management Confident communicator with the ability to work directly with traders, vendors, and senior stakeholders Calm, proactive, and solutions-focused under pressure
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Why Join This is an opportunity to operate at the core of trading technology in a globally connected environment, with real ownership, exposure to front-office workflows, and the chance to drive meaningful improvements across critical systems.
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