Application Support Engineer (eTrading) - Contract - London - Inside IR35

A leading global investment bank is seeking an experienced Application Support Engineer (eTrading) to join its Front Office-aligned electronic trading support team.

This role sits within a global production support function responsible for supporting mission-critical Rates and Credit electronic trading systems. You'll work closely with traders, developers, infrastructure teams and external market venues to ensure the stability, performance and availability of a highly complex trading environment.

The team supports a large-scale global infrastructure estate across Europe, North America and Asia, covering pricing platforms, algorithmic trading systems, market connectivity and straight-through processing solutions.

Responsibilities

• Day-to-day support of production trading environments
• Monitoring platform health, capacity and performance
• Incident management, troubleshooting and root cause analysis
• Managing production changes, releases and upgrades
• Supporting connectivity to exchanges, ECNs, brokers and market data providers
• Working closely with development and infrastructure teams to improve resilience, availability and performance
• Coordinating production activities with internal stakeholders and external vendors
• Taking ownership of key applications and becoming the go-to technical expert for supported systems
• Maintaining and improving operational documentation and support procedures

Required Experience

• Strong Linux and Windows administration skills
• Experience supporting front-office or electronic trading applications
• Strong troubleshooting skills across CPU, memory, networking and system performance issues
• Scripting experience using one or more of:
  • Python
  • Shell
  • PowerShell
  • SQL
• Experience with Jenkins, Ansible or other CI/CD and automation tools
• Good understanding of servers, networking and firewall infrastructure
• Experience supporting Java, C++ or .NET applications
• Excellent incident management and problem-solving skills

Desirable Skills

• Experience supporting low-latency trading platforms
• Knowledge of electronic trading workflows
• Monitoring tools such as Geneos, Splunk or Zabbix
• Multicast messaging experience
• Experience with fixed income, rates or credit trading environments
• Exposure to vendor trading platforms and exchange connectivity

About You

• Self-motivated with a strong sense of ownership
• Able to work effectively under pressure in a production environment
• Strong analytical and troubleshooting capabilities
• Excellent communication and stakeholder management skills
• Team-oriented with a proactive approach to problem solving
• Comfortable operating in a global support model and collaborating across regions

Why Apply?

• Front-office facing role supporting business-critical trading platforms
• Exposure to complex, low-latency electronic trading environments
• Opportunity to work with global teams across multiple regions
• High visibility position with close interaction across trading and technology functions
• Long-term contract potential within a leading financial markets environment