A City based Banking institution is seeking a Systems and Application Support Specialist with strong Fidessa trading platform expertise to support trading across UK and US markets. This is a front-office aligned role requiring close interaction with Traders, Sales Traders, Compliance, and Technology teams to ensure high availability, performance, and stability of mission-critical trading systems.Key ResponsibilitiesTrading Systems SupportProvide 1st, 2nd, and 3rd line support for the Fidessa trading platform across cash equities, derivatives, and related workflows.Deliver real-time trading floor support during UK and US market hours, ensuring rapid response to incidents and minimal disruption to trading activity.Monitor system performance, connectivity, market data feeds, and order routing infrastructure to proactively identify and resolve issues.Incident and Problem ManagementOwn production incidents end-to-end, including triage, root cause analysis, escalation, resolution, and post-incident reporting.Coordinate with internal technology teams, Fidessa vendor support, exchanges, brokers, and infrastructure partners as required.Ensure adherence to ITIL processes and operational best practices.System Configuration and EnhancementsConfigure Fidessa modules, workflows, user profiles, permissions, FIX connectivity, and market access parameters.Support releases, upgrades, patches, and testing cycles, including UAT coordination with front-office stakeholders.Deliver enhancements to ..... full job details .....