Your partners to financial clarity and operational excellence.
Scalability of contract staffing with the strategic oversight of experienced CFOs and Controllers.
Who We Are
Sisu partners with high-growth companies to deliver services that range from accounting to strategic financial leadership.
With decades of combined experience, Sisu helps companies scale efficiently while maintaining financial clarity.
From fractional CFO services to comprehensive financial operations, we provide the strategic oversight and hands-on expertise your growing business needs to thrive.
Accountability
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Collaboration
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Curiosity
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Integrity
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Reliability
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Accountability • Collaboration • Curiosity • Integrity • Reliability •
What We Do
Comprehensive financial services designed for high-growth companies
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Fractional CFO
Strategic financial leadership tailored to your growth stage and business needs.
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FP&A
Comprehensive financial planning and analysis to drive informed decision-making.
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Accounting
Accurate bookkeeping and financial reporting to maintain complete transparency.
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M&A
Expert guidance through mergers, acquisitions, and due diligence processes.
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Capital Raising
Strategic support for fundraising initiatives and investor relations.
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FinOps
Operational efficiency and financial process optimization for scale.
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GTM Strategy
Go-to-market financial modeling and strategic planning for growth.
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Tax & Compliance
Proactive tax planning and regulatory compliance management.
Simple Plans
Scalable tiered pricing for a Finance & Controllership organization that operates like your in-house team.
Basics
Onboarding: 15-30 days
Standard Bookkeeping
Bank & Credit Card Reconciliations
Monthly Basic Financial Statements
Quarterly Variance Analysis
Cash Basis only
Essential
Onboarding: 20-30 days
Standard Bookkeeping
Bank & Credit Card Reconciliations
Monthly Basic Financial Statements
Monthly Variance Analysis
Cash & Accrual Basis
Payroll Processing
GAAP Compliance
Cash Burn Rate Analysis
Fractional Controller Support
Growth
Onboarding: 45-60 days
Standard Bookkeeping
Bank & Credit Card Reconciliations
Monthly Basic Financial Statements
Monthly Variance Analysis
Cash & Accrual Basis
Payroll Processing
GAAP Compliance
Cash Burn Rate Analysis
Fractional Controller Support
Monthly Trend Forecast
Board Reporting
KPI Dashboards
Cap Table Management
Fractional CFO Support
Enterprise
Onboarding: 45-60 days
Specialized package for clients who need a full-time and customized outsourced accounting and finance team
Is your company pre-revenue? Contact Us, Starter Packages may be just the right fit.
Our Founders
Shawna Ruhkala, CPA
CO-FOUNDER
Shawna Ruhkala, CPA is a co-founder of Sisu and an accounting executive where she helps businesses streamline financial operations, raising capital, and strategically guiding companies.
With over 20 years of experience spanning public accounting, corporate finance, and advisory, Shawna has built her career helping companies strengthen their financial foundations and scale with confidence. From raising Series A and B funding and improving cash flow as a fractional CFO to implementing automated revenue systems for global teams at Flip Shop and The Chernin Group, Shawna helps organizations strengthen performance, improve profitability, and position for sustainable growth.
At Sisu, Shawna blends technical accounting acumen with a hands-on, people-first approach, helping founders streamline reporting, optimize systems, and create finance functions that run seamlessly. She's passionate about empowering entrepreneurs to organize, grow, and reach their full financial potential.
Leticia Esteve
CO-FOUNDER
Leticia Esteve is a finance leader and co-founder of Sisu, where she helps high-growth companies bring clarity, confidence, and strategy to their financial operations.
With over 20 years of experience spanning startups and Fortune 50 companies, Leticia has built and led finance functions from the ground up—from launching new fulfillment programs at Amazon to scaling Truepill and Flip through multiple funding rounds. Her expertise covers financial modeling, cash-flow management, forecasting, and strategic planning—all rooted in designing systems that empower founders to make better, faster decisions.
At Sisu, Leticia brings a hands-on, strategic approach to finance. She partners closely with leaders to design scalable financial infrastructure, deliver investor-ready reporting, and transform finance from a back-office function into a growth driver. Passionate about entrepreneurship and innovation, Leticia excels at helping companies unlock their next stage of growth through precision, insight, and strategic partnership.
Our Track Record
$300M+
Combined capital raised
40+
Years combined experience
13+
High-growth startups & Fortune 100
