Application Support Engineer
Job DescriptionLocation: London (On-site, 5 days per week)Role OverviewTalan is seeking an experienced Application Support Engineer to join a high-performing global team supporting the eTrading environment for a leading investment banking client.Operating within a Production & Application Support function, this role sits at the heart of front-office trading technology, ensuring the stability, performance, and continuous improvement of critical electronic trading platforms.You will work in a complex, low-latency environment supporting high-volume trading flows, interacting closely with trading desks, development teams, and infrastructure specialists across a global follow-the-sun support model.Key ResponsibilitiesOversee day-to-day production support activities, including monitoring, incident management, and capacity planningAct as a key point of contact for issue resolution, liaising with traders, developers, infrastructure teams, and external vendorsTake ownership of assigned applications and platforms, developing deep technical expertiseSupport and enhance electronic trading systems, including pricing engines, algorithmic trading components, and STP workflowsManage connectivity to external trading venues (e.g. exchanges, ECNs, market data providers)Contribute to system design improvements, focusing on resilience, scalability, and performance optimisationCoordinate release and change management activities, ensuring robust deployment processesParticipate in a shift-based rota (7am–6pm coverage) and on-call support, including occasional weekend workCollaborate with global teams across Europe, North America, and Asia within a follow-the-sun support modelContinuously improve documentation, monitoring, and operational processesRequired Skills & ExperienceStrong experience in Application Support within electronic trading or capital markets environmentsSolid expertise across Linux and Windows server environmentsExperienced within Wintel EngineeringGood understanding of market connectivity, networking, and infrastructure (firewalls, multicast, latency considerations)Ability to analyse system performance across CPU, memory, network, and messaging layersProficiency in scripting and automation (e.g. Python, Shell, PowerShell, SQL)Experience with CI/CD and deployment tools (e.g. Jenkins, Ansible, Artifactory)Familiarity with application stacks involving Java, C++, or .NETStrong stakeholder engagement skills with the ability to operate in a front-office facing roleProven ability to manage incidents and deliver improvements in high-pressure environmentsDesirable SkillsExperience with ION trading platforms or similar vendor systemsKnowledge of multicast messaging and low-latency trading architecturesMonitoring tools such as Geneos or ZabbixExperience with Splunk or similar log analytics platformsOS performance tuning and optimisationAdditional Information#TalanUKSummaryType: Full-timeFunction: ConsultingExperience level: Mid-Senior LevelIndustry: Information Technology And Services