
Hello
Hi, my name is Mairianne Stewart. I am a portfolio CFO and I provide strategic and commercial financial leadership to SMEs on a part-time or project basis.
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With over 20-years’ experience with FTSE-100 companies, working in a number of senior finance roles, I partnered with a number of successful C-Suite execs during this time. I developed into a true business partner that provided financial and operational commercial and strategic support to ambitious leaders.
Utilising this experience, I have been supporting a variety of SME CEOs / Founders on their growth journeys since 2021. Not only do I love this work, and find it truly fulfilling, but I have been able to add a lot of value to the businesses I have supported!

OVER 20 YEARS
EXPERIENCE
TAILORED
SOLUTIONS
STRATEGIC
FOCUS
C-SUITE
EXPERIENCE
Our Services
I work with ambitious businesses who need help navigating the more complex challenges – designing, implementing and managing the systems, processes and reporting required to support their growth.
Financial Leadership
Manage Finance Team
Evaluate Commercial Initiatives
Stakeholder Engagement
Strategic Planning
Facilitate Strategy Sessions
Strategic Financial Planning
Develop KPIs & Scorecards
Governance
Board Management & Reporting
Compliance & Risk Management
Operational Excellence
Operational Finance
Ongoing Financial Monitoring
Cash Flow Management
System Implementation
Why choose
Plug-In Finance?
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Over 20 years’ experience supporting FTSE-100 C-suite executives
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Fractional CFO, expertise across financial, risk and operational monitoring & reporting
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Skilled at translating financial and operational data into actionable insights that accelerate growth
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Financial leadership to guide you through your business journey
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Practical support to help you navigate complex financial situations with confidence
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Your trusted business partner, with you at every step along the way

