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Senior Application Support

Posted: 06/03/26
Recruiter:City Elite Transaction Services Ltd
Reference:3080056094
Type:Permanent
Disciplines: Applications Specialist
Salary:£100,000 - £150,000 Annual
Location:London
Description:

Senior Application Support

About the Role

We are looking for a Level 2 (L2) Application Support Engineer to join a global trading operations team. The role focuses on supporting electronic trading platforms and financial applications in a high-pressure production environment. You will also participate in IT Service Management processes, including Incident, Problem, and Change Management, and contribute to operational governance.

Key Responsibilities:

  • Troubleshoot and resolve live production issues quickly, escalating when necessary.
  • Prioritise incidents based on business impact and urgency.
  • Monitor system components and improve monitoring workflows.
  • Support and maintain both production and testing environments.
  • Communicate effectively with internal teams and end users.
  • Document systems, processes, and operational enhancements.
  • Collaborate with development teams to ensure smooth release handovers.
  • Provide clear updates on outages and incidents.
  • Support compliance and regulatory reporting requirements.
  • Identify operational risks and implement mitigation.
  • Mentor and train team members as needed.

Skills & Experience Required:

  • Bachelor's or Master's degree in Computer Science or related field, with 5+ years of relevant experience.
  • Strong interest in learning new technologies and tools.
  • Experience with financial trading systems, messaging protocols, or electronic transaction platforms.
  • Understanding of FIX protocol and low-latency system operations.
  • Familiarity with messaging systems (e.g., JMS) and production system workflows.
  • Knowledge of straight-through processing (STP) trade flows is desirable.
  • Networking expertise with ability to analyse packet captures.
  • Advanced Unix/Linux skills (TCP tuning, CPU affinity).
  • Scripting experience in one or more languages (Python, Bash, etc.).
  • Experience with system connectivity to trading platforms or exchanges is a plus.
  • Excellent communication skills and strong customer-service mindset.

Recruiting now