Application Support Engineer (Cash Equities)

Application Support Engineer (AVP) - Cash Equities

London (100% office) 12 months (initial) Competitive (Via Umbrella)

Overview

We 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 Responsibilities

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• Provide hands-on Level 1/2/3 support for the Cash Equities Execution platform
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• Sit directly with High Touch and Low Touch trading desks, supporting real-time trading activity
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• Monitor system health, performance, and trading flows across global markets
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• Develop and enhance monitoring, alerting, and observability frameworks
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• Troubleshoot incidents, perform root cause analysis, and deliver timely resolution
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• Own and manage incident lifecycle, including detailed post-incident reporting
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• Collaborate closely with Front Office developers, quants, and BA teams
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• Support production releases and deployments, ensuring minimal disruption
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• Automate manual processes using scripting to improve efficiency and reliability
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• Maintain and improve operational documentation (runbooks, procedures, tools)
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• Participate in on-call and weekend rotations as part of a global support model
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Required Skills & Experience

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• Strong experience supporting trading systems or low-latency platforms
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• Solid expertise in Unix/Linux environments and system-level troubleshooting
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• Proficient in at least one scripting/programming language (e.g. Python, Bash, Go)
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• Experience with monitoring & observability tools (e.g. Dynatrace, Prometheus, Grafana)
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• Strong understanding of networking fundamentals (TCP/IP, DNS, latency, etc.)
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• Proven ability to troubleshoot complex, distributed systems under pressure
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• Experience working in production support / SRE / APS environments
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Desirable Experience

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• Exposure to electronic trading, equities, or financial markets
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• Experience with log management tools (Splunk, OpenSearch)
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• Knowledge of messaging systems (Kafka, Tibco, Solace)
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• Familiarity with databases (Oracle, PostgreSQL, MySQL, KDB/q)
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• Experience with network monitoring tools (e.g. Corvil)
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• Infrastructure-as-Code exposure (e.g. Ansible)
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• Background in high-availability, high-throughput environments
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Personal Profile

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• Strong client focus and ability to interact with front office stakeholders
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• Excellent problem-solving and analytical mindset
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• Highly organised and detail-oriented
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• Proactive, self-motivated, and able to work under pressure
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• Strong communicator - able to clearly explain technical issues
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• Team player with flexibility to adapt in fast-moving environments
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Why Join?

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• Work directly with front office trading desks and quants
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• Exposure to cutting-edge trading systems and high-frequency environments
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• Opportunity to be part of a globally distributed APS/SRE team
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• Gain deep insight into financial markets and execution platforms
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Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.