Senior OneStream Implementation Consultant (Hybrid - London/Keele, UK)

ZipRecruiter; Keele; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

Join a leading finance transformation firm as a Senior OneStream Implementation Consultant. You will play a key role in delivering impactful projects, enabling clients to maximize their investment in OneStream while mentoring junior consultants. This hybrid position allows you to work closely with clients and colleagues, ensuring effective finance solutions and transformation.

Benefits

Competitive salary and benefits based on experience

25 days holiday plus public holidays

Flexible hybrid working model

Private medical insurance

Company pension scheme

Structured training and mentoring

Qualifications

• 3+ years in OneStream implementation projects.
• Strong proficiency in VB.NET/C#.
• Experience in leading workshops and UAT.

Responsibilities

• Leading OneStream implementation projects from start to finish.
• Collaborating with Finance and IT stakeholders.
• Providing post-go-live support and training.

Skills

OneStream business rule development

Data integration

Finance process understanding

SQL Server knowledge

Problem-solving

Communication skills

Education

Degree in Finance, Accounting, Computer Science, or related field

Job description

Job Description

Company Description

Concentric Solutions is a trusted and long-standing OneStream Platinum Partner in finance transformation. Our mission is to help finance teams spend less time making sense of corporate data and more time making business decisions that drive value.

As a recognised OneStream Platinum Partner, we deliver specialist corporate performance management solutions across financial consolidation, planning, forecasting, ESG reporting, lease accounting, and more. We are experts in transforming complexity into clarity, empowering organisations to unlock the full value of their data and analytics.

With over 18 years of experience supporting the Office of the CFO both locally and globally, as well as wider organisations and C-level executives, we serve clients across diverse industry sectors and verticals. Our collaborative, people-first culture is built on mentorship, innovation, and a commitment to professional growth and . At Concentric, you’ll join a supportive team that values your development and encourages you to bring your best ideas to the table.

Role Description

As a Senior OneStream Implementation Consultant, you’ll play a central role in delivering high-impact finance transformation projects for our clients. This is a hands-on, client-facing position covering the full project lifecycle, from requirements and design through build, deployment, post-go-live enablement, and ongoing optimisation. You’ll work directly with Finance, IT, and C-level stakeholders, mentor colleagues, contribute to pre-sales, and help drive continuous improvement for our clients and our team.

Key responsibilities include:

• Leading full lifecycle OneStream implementations, from requirements gathering and solution design to deployment and post-go-live support.
• Building and maintaining business rules, calculations, and automation using VB.NET/C# and the OneStream platform.
• Designing, developing, and troubleshooting data integrations from source systems (ERPs, APIs, flat files) into OneStream.
• Facilitating workshops and collaborating with Finance and IT stakeholders to translate business requirements into technical solutions.
• Delivering best-practice system configuration, workflow design, metadata management, and security setup.
• Supporting UAT, cutover, and go-live activities, including troubleshooting, performance tuning, and root cause analysis.
• Providing post-go-live enablement, admin training, documentation, and knowledge transfer to ensure clients maximise value from their OneStream investment.
• Assisting with pre-sales activities including demonstrations, proof-of-concept builds, and RFP support.
• Identifying opportunities to enhance client solutions or expand services, collaborating with commercial and delivery teams.
• Mentoring junior consultants and contributing to internal best practices and knowledge sharing.

This is a hybrid role, with some days spent in our offices (London/Keele) and/or at client sites. We believe in-person time is essential for building client relationships, effective collaboration, and your professional development.

What You Will Work On

You’ll work on a variety of impactful projects, supporting clients at every step of their OneStream journey:

• Delivering innovative OneStream solutions for financial close, consolidation, planning, forecasting, ESG, lease accounting, and reporting.
• Helping clients achieve faster close cycles, agile planning, improved ESG and regulatory reporting, and actionable business insights.
• Optimising business rules, workflows, and integrations for greater efficiency and value.
• Supporting smooth transitions for clients through UAT, go-live, and initial production.
• Resolving complex issues around system performance, data integrity, and calculation logic.
• Enabling client teams to fully leverage their OneStream platform through tailored training, documentation, and ongoing optimisation.
• Participating in pre-sales workshops to showcase Concentrics’s solution capabilities and vision.

Key Requirements

To excel in this role, you’ll need a blend of technical mastery, consulting expertise, and business process understanding:

• 3+ years of hands-on OneStream implementation experience (full project lifecycle).
• Strong proficiency in OneStream business rule development (VB.NET/C#) and data integration.
• Deep understanding of finance processes (close, consolidation, planning, forecasting, reporting).
• Good working knowledge of relational and multidimensional databases (e.g., SQL Server).
• Strong attention to detail with a methodical, solution-oriented approach.
• Proven track record leading workshops, facilitating requirements gathering, and presenting to both business and technical audiences.
• Experience with UAT support, troubleshooting, and post-go-live client enablement.
• Excellent communication and documentation skills.
• Degree in Finance, Accounting, Computer Science, Information Systems, or a related field.
• OneStream certification(s) strongly , project management certifications desirable.

Ideal Candidate

You are a solution-driven consultant with a passion for delivering measurable client value. You thrive on leading projects and building strong client relationships, combining your knowledge of finance processes with deep technical OneStream expertise. You enjoy mentoring others and working across the entire project lifecycle, from pre-sales to go-live and beyond. If you value teamwork, innovation, personal development, and making a real impact on organisations, you’ll find a great fit with our collaborative and growth-focused team.

Why It Matters

Finance teams today need more than just reports. They need unified, intelligent platforms that drive action and deliver value. In this role, you will help clients transform their finance functions with OneStream. Your work will enable faster close cycles, agile planning, streamlined ESG and regulatory reporting, and powerful insights. Join us at the forefront of finance transformation and help shape the future of financial intelligence.

What We Offer

You’ll join a collaborative, expert team dedicated to long-term client success and professional growth. We offer:

• Competitive salary and benefits, based on experience.
• 25 days holiday plus public holidays.
• Flexible hybrid working model (some days in-office).
• Private medical insurance.
• Company pension scheme.
• Structured training, mentoring, and support for OneStream and related certifications.
• A supportive, innovative environment focused on quality, knowledge sharing, and continuous improvement.

Eligibility

Applicants must have the existing right to work in the UK, as we are unable to offer visa sponsorship at this time.

STRICTLY NO AGENCIES