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.

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