Business Analyst – OMS Migration (Back Office / Post‑Trade)
Location: City of London - 3 days per week into Office
Inside IR35: 600-650
Duration: 12-months
We’re supporting a global financial services organisation on a major OMS migration programme, impacting core back‑office settlements and accounting platforms.
This role sits within a wider transformation focused on modernising post‑trade systems and ensuring operational stability, financial accuracy, and regulatory compliance throughout the migration lifecycle.
You’ll play a key role in delivering the OMS migration, working across Operations, Finance, Risk and Technology to define requirements and ensure successful implementation.
Key responsibilities include:
* Eliciting and documenting business requirements, process flows and data mappings across settlement and accounting systems
* Analysing as‑is and to‑be processes, including trade settlement, netting, cash and securities movements, booking models and accounting flows
* Supporting system migration activities such as functional design, data migration, reconciliations and legacy decommissioning
* Driving UAT planning and execution, including test scenario definition, coordination and defect triage
* Supporting parallel run and post‑implementation validation to ensure data accuracy and operational control
* Ensuring all changes align with governance, risk and regulatory requirements
Experience Required
* Proven experience as a Business Analyst within back office / post‑trade environments
* Strong understanding of settlements, accounting flows and financial reconciliations
* Experience supporting OMS or large‑scale system migrations / change programmes
* Strong process mapping, data analysis and documentation skills
* Confident stakeholder management across Operations, Finance, Risk and Technology
Desirable:
* Experience with settlement or accounting platforms / post‑trade vendor systems
* Knowledge of booking models, net settlement and control frameworks
* Exposure to regulatory or audit‑driven change in financial services
This is an opportunity to join a high‑impact OMS transformation programme, working across a complex financial services environment and contributing to the modernisation of critical post‑trade systems.
If you’re interested in working on large‑scale trading system migrations, please get in touch to discuss further.