FIX Onboarding/Trade Support Consultant
Customer Onboarding (FIX) Change Consultant
6-Month Contract | Up to £500/day | Inside IR35
Hybrid London (2-3 days per week)
Overview
A leading electronic trading organisation is delivering a structured connectivity and infrastructure change programme impacting institutional FIX clients.
As part of this programme, the business is transitioning client connectivity within a live, regulated trading environment. The team requires an experienced consultant to support onboarding, migration activity and controlled connectivity changes.
This is a hands-on technical change delivery role - not a pure change management or PM position. You will be responsible for executing structured FIX onboarding and migration workstreams while operating within a broader change framework.
Role Responsibilities
- Lead Customer Onboarding (FIX) session setup for migrating and new connections
- Manage end-to-end connectivity testing, certification and validation
- Execute structured migration and onboarding workpacks
- Coordinate controlled customer cutovers and transition planning
- Identify and resolve onboarding or connectivity issues proactively
- Draft, update and maintain onboarding documentation, process guides and operating procedures
- Enhance migration templates and strengthen repeatable onboarding standards
- Manage multiple concurrent onboarding initiatives
- Engage and align stakeholders across US, EU and APAC time zones
- Provide structured updates into programme governance forums
The Successful Person Will Have
- Strong understanding of FIX Protocol (sessions, connectivity, message structures)
- Experience delivering Customer Onboarding (FIX) or connectivity change within trading environments
- Exposure to infrastructure or data centre migration programmes
- Excellent stakeholder management skills across both technical and commercial audiences
- Demonstrable problem-solving ability within live, time-sensitive environments
- Strong documentation and process-writing capability
- The ability to work independently in a hands-on, delivery-focused role
- Comfort operating within regulated trading environments