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Principal OneStream Consultant

SystemsAccountants

london, england, United-Kingdom Full-time June 29, 2026
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Vacancy Description

Permanent - open to candidates with right to work in the UK

SystemsAccountants is partnering with a leading finance transformation consultancy to hire an experienced Senior / Principal OneStream Consultant. This hands‑on, client‑facing role delivers full‑lifecycle OneStream projects across consolidation, planning, forecasting, ESG, lease accounting and wider EPM use cases.

You’ll work directly with Finance, IT and C‑suite stakeholders, shaping solution design, leading workshops, building complex business rules, developing integrations, and guiding clients through deployment, go‑live and ongoing optimisation. This role suits someone who thrives across the full project lifecycle and enjoys combining technical depth with strong consulting and finance process expertise.

What You’ll Do

  • Lead end‑to‑end OneStream implementations from requirements and design through build, deployment and post‑go‑live support
  • Develop business rules, calcul...

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