OneStream Developer

TRIA; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

TRIA is seeking an experienced OneStream Technology Lead / Developer to lead the design and support of OneStream solutions in London. This hands-on role requires expertise in OneStream XF development, with responsibilities including designing applications, developing custom calculations, and ensuring data integrity. The ideal candidate will have strong SQL skills and experience in financial data models, acting as a technical lead to bridge finance and IT teams. The role requires onsite commitment for 2-3 days a week.

Qualifications

• Strong hands-on experience developing in OneStream XF.
• Proven expertise in business rules, scripting, cube configuration, and reporting.
• Solid SQL skills and experience working with financial data models.
• Experience supporting data integrations and ETL processes.
• Background acting as a technical lead or senior OneStream developer.
• Strong communication skills with the ability to bridge finance and technology teams.

Responsibilities

• Lead the design, build, and support of OneStream applications.
• Translate business requirements into robust technical designs.
• Develop business rules, XF scripts, and complex custom calculations.
• Design and optimise OneStream cubes, dimensions, workflows, and security models.
• Build and enhance reports, dashboards, and analytic views.
• Support and maintain data integrations, APIs, and connectors.
• Ensure data integrity, performance optimisation, and governance.
• Provide code reviews, documentation, and mentoring.
• Support production environments and month-end cycles.

Skills

OneStream XF development

SQL skills

Technical leadership

Business analysis

Data integration

Job description

London - 2-3 days a week - Rate Negotiable

Contract - Rate Negotiable - Initially 6 months with a strong chance of extension

We are seeking an experienced OneStream Technology Lead / Developer to take ownership of the design, development, and ongoing support of OneStream solutions across planning, consolidation, reporting, and analytics. This is a hands‑on technical leadership role, working closely with Finance and IT to deliver scalable, well‑governed financial solutions.

What you’ll do

• Lead the design, build, and support of OneStream applications across budgeting, forecasting, consolidation, and reporting
• Translate business requirements into robust technical designs and solution architecture
• Develop business rules, XF scripts, and complex custom calculations
• Design and optimise OneStream cubes, dimensions, workflows, and security models
• Build and enhance reports, dashboards, and analytic views
• Support and maintain data integrations, APIs, and connectors
• Ensure data integrity, performance optimisation, and adherence to best‑practice governance
• Act as a technical lead, providing code reviews, documentation, and mentoring to other developers
• Support production environments, month‑end cycles, and ad‑hoc analysis

What you’ll bring

• Strong hands‑on experience developing in OneStream XF
• Proven expertise in business rules, scripting, cube configuration, and reporting
• Solid SQL skills and experience working with financial data models
• Experience supporting data integrations and ETL processes
• Background acting as a technical lead or senior OneStream developer
• Strong communication skills with the ability to bridge finance and technology teams

Please only apply for the role if you have demonstrable, technical ability with OneStream and are happy to commit to 2-3 days a week onsite in the London office.

If you would like to be considered then please apply today!