Role: Fidessa Engineer (OMS / EMS Specialist)
Location: London - 100% on-site
Contract Duration: 12 months
Rate: up to £800 p/d (via PAYE)
We are looking for an experienced Fidessa Engineer to join a Trading Technology team focused on modernising equities execution platforms. This contract role will play a key part in integrating an in-house OMS with Fidessa EMS and shaping the transition toward a scalable, multi-EMS / headless EMS architecture.
Key Responsibilities
Lead the design, build, and deployment of OMS-Fidessa EMS integrations, covering order entry, execution feedback, and allocations.
Define and implement FIX connectivity, including session management, execution reports, order routing, and drop copy feeds.
Collaborate with Fidessa technical teams to align APIs, feeds, and message schemas with internal OMS standards.
Analyse and optimise end-to-end trade workflows from order creation through execution, booking, and reporting.
Partner with Front Office, Product, and Risk/Compliance teams to ensure robust trading controls and reporting integrity.
Troubleshoot complex OMS-EMS issues related to latency, sequencing, reconciliation, and data consistency.
Contribute to architecture and proof-of-concepts for multi-EMS and headless EMS solutions.
Produce clear technical documentation, interface specifications, and operational runbooks.
Required Skills & Experience
10+ years' experience in equities trading technology within buy-side or sell-side environments.
Strong hands-on experience with Fidessa EMS and OMS platforms (e.g. Bloomberg AIM, FlexTrade, Charles River, or in-house systems).
Deep knowledge of FIX (4.2, 4.4, 5.0), EMS routing rules, Wheel, FDM, and drop copy configurations.
Solid understanding of front-to-back trade lifecycle, market structure, and regulatory requirements (MiFID II, Reg NMS, CAT/TRF).
Experience with message-driven architectures, SQL, and scripting in Java or Python.
Excellent problem-solving skills and the ability to work closely with traders and engineers in fast-paced environments.
Apply today or email your CV to
McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.
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