Application Support Engineer; AVP – Cash Equities

London (100% office)

12 months (initial)

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.

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

• Strong experience supporting trading systems or low-latency platforms
• Solid expertise in Unix/Linux environments and system-level troubleshooting
• Proficient 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 pressure
• Experience working in production support / SRE / APS environments
• Exposure to electronic trading, equities, or financial markets
• Experience with log management tools (Splunk, Open Search)
• Knowledge of messaging systems (Kafka, Tibco, Solace)
• Familiarity with databases (Oracle, PostgreSQL, MySQL, KDB/q)
• Experience with network monitoring tools (e.g. Corvil)
• Background in high‑availability, high‑throughput environments

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

• Work directly with front office trading desks and quants
• Exposure to cutting‑edge trading systems and high‑frequency environments
• Opportunity to be part of a globally distributed APS/SRE team
• Gain deep insight into financial markets and execution platforms