OneStream Senior Developer/Architect

SystemsAccountants; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

SystemsAccountants is assisting a large international organisation in London to hire a OneStream Senior Developer/Architect. The role offers ownership of the finance system and end-to-end evolution of the platform, with 4 days in the office.

You will lead architecture, deliver rules, workflows, dashboards, and integrations, while mentoring the team and aligning with senior stakeholders. You will work across technical and functional domains, focusing on consolidation, planning and reporting, and

Qualifications

• Hands-on OneStream experience with solid EPM architecture knowledge.
• Understanding of consolidation, planning and reporting processes.
• Proven delivery of rules, workflows and integrations in finance transformations.
• Comfort working across technical and functional topics; scalable solutions.
• Strong problem-solving, ownership mindset and mentoring ability.
• Consulting background is a plus.

Responsibilities

• Lead the architecture and development of the OneStream platform.
• Design and deliver rules, workflows, dashboards, and integrations.
• Own solutions from design through delivery and continuous improvement.
• Collaborate with finance and technical stakeholders to translate requirements into scalable solutions.
• Drive best practices and continuous improvement across the platform.
• Mentor and support team members, contributing to growth and knowledge sharing.
• Work closely with internal stakeholders and external experts.

Skills

OneStream

EPM architecture

Finance transformation

Mentoring

Ownership mindset

Stakeholder collaboration

Job description

Our client is a large international organisation operating across multiple regions, currently investing heavily in its finance systems landscape, with OneStream at the core of its EPM strategy.

As part of their continued growth and transformation, they are looking to hire a OneStream Senior Developer/Architect to lead enhancements and drive the evolution of their global finance system.

This role is ideal for an expert who enjoys working hands-on and is looking for greater ownership of the system, as well as the opportunity to see solutions evolve end-to-end.

The role is based in London, with 4 days in the office as part of their internal policy.

What will I be doing?

As a OneStream Senior Developer/Architect, you will play a key role in shaping and delivering finance system improvements. Your responsibilities will be:

• Leading the architecture and development of the OneStream platform;
• Designing and delivering rules, workflows, dashboards, and integrations;
• Taking ownership of solutions from design through to delivery and continuous improvement;
• Collaborating with finance and technical stakeholders to translate requirements into scalable solutions;
• Driving best practices and continuous improvement across the platform;
• Mentoring and supporting team members, contributing to team growth and knowledge sharing;
• Working closely with internal stakeholders and external experts, …

What kind of skills and background will I need to have?

• Ideally, you bring strong hands-on experience with OneStream and a solid understanding of EPM architecture and development.
• You have a good understanding of financial processes such as consolidation, planning, and reporting.
• You have proven experience delivering solutions, including rules, workflows, and integrations, within finance transformation environments.
• You are comfortable working across both technical and functional topics, and able to design scalable solutions.
• You are recognised for your problem-solving skills, ownership mindset, and ability to mentor others.
• A consulting background is a plus.

Why should I apply for this role?

This is a great opportunity if you are looking to join a large international organisation, work at the heart of a strategic finance transformation, and gain full visibility on the evolution of the OneStream platform while working closely with senior leadership!