Application Support Engineer (Cash Equities)

Application Support Engineer (AVP) - Cash EquitiesLondon (100% office) 12 months (initial) Competitive (Via Umbrella)OverviewWe are seeking an experienced Application Support Engineer (AVP level) to join a high-performing Application Production Support (APS) team within a leading global investment bank in London.You will play a critical role supporting a low-latency Cash Equities trading platform, working directly alongside front office traders, quants, and developers to ensure stability, performance, and continuous improvement of a mission-critical execution environment.This is an excellent opportunity to gain exposure to high-frequency trading systems, global markets, and cutting-edge real-time technologies in a fast-paced environment.Key ResponsibilitiesProvide hands-on Level 1/2/3 support for the Cash Equities Execution platformSit directly with High Touch and Low Touch trading desks, supporting real-time trading activityMonitor system health, performance, and trading flows across global marketsDevelop and enhance monitoring, alerting, and observability frameworksTroubleshoot incidents, perform root cause analysis, and deliver timely resolutionOwn and manage incident lifecycle, including detailed post-incident reportingCollaborate closely with Front Office developers, quants, and BA teamsSupport production releases and deployments, ensuring minimal disruptionAutomate manual processes using scripting to improve efficiency and reliabilityMaintain and improve operational documentation (runbooks, procedures, tools)Participate in on-call and weekend rotations as part of a global support modelRequired Skills & ExperienceStrong experience supporting trading systems or low-latency platformsSolid expertise in Unix/Linux environments and system-level troubleshootingProficient in at least one scripting/programming language (e.g. Python, Bash, Go)Experience with monitoring & observability tools (e.g. Dynatrace, Prometheus, Grafana)Strong understanding of networking fundamentals (TCP/IP, DNS, latency, etc.)Proven ability to troubleshoot complex, distributed systems under pressureExperience working in production support / SRE / APS environmentsDesirable ExperienceExposure to electronic trading, equities, or financial marketsExperience with log management tools (Splunk, OpenSearch)Knowledge of messaging systems (Kafka, Tibco, Solace)Familiarity with databases (Oracle, PostgreSQL, MySQL, KDB/q)Experience with network monitoring tools (e.g. Corvil)Infrastructure-as-Code exposure (e.g. Ansible)Background in high-availability, high-throughput environmentsPersonal ProfileStrong client focus and ability to interact with front office stakeholdersExcellent problem-solving and analytical mindsetHighly organised and detail-orientedProactive, self-motivated, and able to work under pressureStrong communicator - able to clearly explain technical issuesTeam player with flexibility to adapt in fast-moving environmentsWhy Join?Work directly with front office trading desks and quantsExposure to cutting-edge trading systems and high-frequency environmentsOpportunity to be part of a globally distributed APS/SRE teamGain deep insight into financial markets and execution platformsGuidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.