Solutions Architect - OneStream

OneStream Senior Developer

London - Hybrid working

Salary: Competitive Salary - Senior level banding

Full-time - Permanent

Our client are looking for an experienced OneStream Developer to join their permanent team and help them enhance and evolve their OneStream v9 platform. Your work will play a key role in strengthening their Group Finance consolidation and planning processes, bringing meaningful improvements to reporting, analytics, and overall performance. You'll be involved in every stage-from understanding requirements to designing, building, testing, releasing, and supporting their global teams.

This is a great fit for someone who values ownership and wants to see their solutions genuinely adopted, not simply handed over and forgotten

Key Responsibilities

• The successful candidate will own the full lifecycle, from scoping and design to build, test, release, and enabling users on OneStream.
• Lead the development of advanced OneStream v9 solutions across Consolidation, Planning, Workflow, Dashboards, and Reporting.
• Design and enhance Cube Views, Forms, Dashboards, BR/Calc Scripts, Extender rules, and complex transformation logic.
• Own metadata architecture, dimensional design, optimisation, and best practice governance.
• Create new models and enhancements using Analytic Blend, PFx, Task Manager, Application Control Manager, and other v9 capabilities
• Collaborate closely with Group Finance and FP&A to translate functional requirements into scalable technical solutions.
• Lead workshops, technical design sessions, and solution walkthroughs.
• Provide expert recommendations on process improvement, modelling, and architecture.

Core Experience Requirements

• Extensive hands on experience developing OneStream solutions (v8/v9) within complex, multi currency, multi entity group environments.
• Strong technical capability across BR/Calc Scripts, Vb.net, Extender Rules, Dashboards, Cube Views, Data Management, and Workflow.
• Solid understanding of consolidation models, including FX, intercompany, eliminations, and minority interest.
• Experience building planning models such as driver based planning, forecasting, and allocation frameworks.
• Demonstrable ability to design scalable metadata structures and optimise cube performance.
• Robust integration experience
• Excellent communication skills with the confidence to partner effectively with Finance stakeholders.

Desirable Experience

• Familiarity with Analytic Blend, Task Manager, PFx, and Application Control Manager.
• Understanding of end to end finance processes (close, consolidation, reporting, planning).
• Background in consulting or large scale EPM/CPM implementations.

Qualifications

• Degree in Finance, Accounting, Computer Science, or a related field.
• Professional accounting qualification (ACCA/CIMA/ACA/FCCA) is advantageous but not essential.
• OneStream certifications or formal training are highly valued.