Senior Lead Architect – OneStream

Lead Architect – One Stream

Location: London – Hybrid working

Type: Full-time

Salary: Competitive + Benefits

Our client, a Global One Stream Vendor and leader in digital transformation and enterprise performance management are seeking to expand their services in the UK, they are now keen to bring on board a visionary Lead Architect with deep expertise in One Stream to join their team and shape the future of finance technology.

As Lead Architect, you will bring a deep understanding and implementations experience on One Stream. You’ll collaborate with cross-functional teams, guide technical design, and ensure scalable, high-performance solutions that meet complex business needs. This is a hands‑on leadership role where innovation meets execution.

• Lead the architectural design and delivery of One Stream solutions across enterprise clients
• Define best practices, standards, and governance for One Stream implementations
• Collaborate with finance, IT, and business stakeholders to translate requirements into scalable architecture
• Mentor and guide development teams, ensuring technical excellence and alignment with business goals
• Stay ahead of industry trends and One Stream product updates to drive innovation
• Support pre‑sales activities, including solution design and technical presentations

• Proven experience as a Lead Architect or Senior Consultant in EPM or CPM platforms
• 3+ years of hands‑on experience with One Stream
  , including design, configuration, and deployment
• Strong understanding of financial consolidation, planning, and reporting processes
• Expertise in data integration, performance optimisation, and cloud architecture
• Excellent communication and stakeholder management skills
• Ability to lead and inspire technical teams in a fast‑paced environment
• One Stream certification is a plus

• A collaborative, forward‑thinking culture
• Opportunities to work on global, high‑impact projects
• Professional development and certification support
• Flexible working arrangements
• Competitive compensation and benefits package

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