Business Analyst - Inside IR35 - Back Office Migration
Posted Today by Lorien Resourcing Limited
£600 Per day
Inside
Hybrid
The City, City of London (EC4), EC2V 6EE
Summary: The Business Analyst role focuses on supporting a global financial services organization during a major Order Management System (OMS) migration, specifically within back-office and post-trade environments. The position involves collaborating with various departments to define requirements and ensure successful implementation while maintaining operational stability and regulatory compliance. The role requires strong analytical skills and experience in system migrations, particularly in settlements and accounting flows. This is a 12-month contract based in the City of London, with a hybrid working arrangement.
Key Responsibilities:
- 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
Key Skills:
- 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
Salary (Rate): £600 daily
City: City of London
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: inside IR35
Seniority Level: undetermined
Industry: Finance
Business Analyst - OMS Migration (Back Office / Post-Trade)
Location: City of London - 3 days per week into Office
Inside IR35: 600
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.
Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.