ION Support Engineer

Job title: ION Support Engineer

Client: Investment Bank

Rate: Up to £550 p/d (inside IR35)

Duration: 6 month rolling

Location: London/Hybrid

Contract Role: Trading Application Support Engineer (6 months, Inside IR35 - £550/day)

I'm working with a leading global investment bank to hire an experienced Trading Application Support Engineer for a 6-month contract (Inside IR35) paying £550/day. This role sits within their Core Markets technology function, providing crucial support across Fixed Income, Equity, and Derivatives trading.

Key Responsibilities

• Provide second- and third-line support across a range of trading systems for equities, credit, Fixed Income, and derivative products (including bonds, CDS, IRS, and currency swaps).
• Cover support shifts between 7am-7pm (early, normal, and late patterns), with occasional weekend or out-of-hours work.
• Drive improvements in system efficiency, resilience, performance, and accuracy; deliver small-scale enhancements and fixes.
• Co-ordinate and manage software releases into UAT and Production environments, ensuring full documentation and handover into support.
• Define and maintain support requirements for new development releases (alerting, error logging, thresholds, monitoring, etc).
• Ensure all changes follow established change control processes and are properly tracked in version control tools.
• Liaise with external vendors to manage fixes, and co-ordinate UAT/regression testing with business stakeholders.
• Create, update, and maintain documentation across business, support, and maintenance procedures.

Required Skills & Experience

• Degree educated or equivalent professional experience.
• 5+ years supporting trading platforms in a Front Office or high-pressure financial markets environment.
• Strong product knowledge across Fixed Income, Equities, and Derivatives, including IRS, CDS, ETFs, futures, options, and convertible bonds.
• Excellent technical investigation, analysis, and problem-solving capabilities.

Experience supporting or working with:

• Bloomberg TOMS
• Markitwire
• ION (Cash & Swaps)
• Bond pricing tools
• D2D/D2C venues and end-to-end STP flows within FI
• Familiarity with CRM support and client-facing internal tools.
• Effective communicator with the ability to work under pressure and collaborate across technology, trading, and business teams.

If you are interested in the Engineer role, please apply directly or email (see below)