Application Support (FIX Specialist)- London

We are seeking an Application Support Analyst to join a team responsible for the complete front-office application support function for Equities Trading. The role will focus on supporting OMS/EMS platforms, managing trade flow issues, onboarding FIX clients, and providing technical support to trading desks, business users, and external clients. This is initially a 12 month contract with the potential to extend and will be a Fully office based role that will be based in London.

This is a hands-on support role requiring strong FIX Protocol knowledge, experience supporting electronic trading applications, and the ability to troubleshoot across multiple technologies in a fast-paced trading environment. Responsibilities:

• Provide front-office application support for equities trading platforms and related applications.
• Support and troubleshoot OMS/EMS systems, ensuring smooth order and trade flow processing.
• Manage FIX connectivity issues, client onboarding, certification, and production support activities.
• Investigate and resolve application, trade, and market connectivity incidents.
• Work closely with traders, sales traders, operations teams, technology teams, and external clients.
• Perform root cause analysis and drive improvements to system stability and performance.
• Monitor production systems and proactively identify potential issues.
• Support release deployments and participate in change management activities.
• Create and maintain operational runbooks, support documentation, and procedures.

• Strong knowledge of FIX Protocol, including FIX session management, troubleshooting, and client onboarding.
• Experience supporting Cash Equities Trading environments.
• Experience supporting OMS (Order Management Systems) and EMS (Execution Management Systems).
• Strong SQL skills for data analysis, troubleshooting, and investigation.
• Experience working in Unix/Linux environments, including command-line administration and shell scripting.
• Understanding of front-office trading workflows and the lifecycle of equity orders and trades.
• Experience working within a production support or application support function.
• Strong analytical and problem-solving skills with the ability to work under pressure in a business-critical environment.

Pulled from the full job description

• Annual leave
• Company pension

FDM is an award-winning global leader in tech and business talent solutions, backed by more than 35 years of industry experience. We have centres across Europe, North America, and Asia-Pacific, and a global workforce of over 2500 employees. FDM has shown exponential growth throughout the years, firmly establishing itself as an award-winning employer, currently listed on the FTSE4Good Index and as a 2026 Financial Times UK ‘Best Employer’.

Diversity and Inclusion FDM Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, national origin, age, disability, veteran status or any other status protected by federal, provincial or local laws.

Why join us

• Career coaching, mentoring and access to upskilling throughout your entire FDM career
• Assignments with global companies and opportunities to work abroad
• Opportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your field
• Annual leave and work-place pension

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