Our team

The people behind your financial clarity

Licensed CPAs, financial analysts, and operations professionals across Canada, united by a single standard of client service.

Elena Serebryany, CPA, CA
Founder and CEO

Elena founded TYM in 2012 after years of advising clients with complex US and international tax situations. A CPA with deep expertise in US tax, international structuring, FIRPTA, and cross-border treaty application.

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Sergey Rautkin, CPA
Fractional CFO

Sergey is a CPA and Fractional CFO at TYM, serving clients since 2016. He specializes in US corporate tax, international structuring, and strategic tax advisory for mid-market businesses.

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Natalia Rayner, CPA CMA
Fractional CFO

CPA CMA with 20+ years of progressive financial experience. Natalia serves as Fractional CFO at TYM, specializing in financial reporting, cost accounting, budgeting, and internal controls.

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Aleksandr Evtushenko
Fractional Controller

Aleksandr supports clients with financial analysis, reporting, and bookkeeping across the firm's practice as a Fractional Controller.

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Olga Okhrimenko
Fractional Controller

Olga serves as Fractional Controller for TYM clients, covering month-end close, financial reporting, AP/AR oversight, and intercompany reconciliations across multiple client entities.

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Oleg Smirnov, PMP
Head of Operations

PMP and Lean Six Sigma Master Black Belt with 6+ years managing international projects for Fortune 500 companies including PepsiCo and Tesla. Leads the firm's operations.

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Vladimir Ilin
Partnership Manager

Partnership Manager at TYM, leading new client acquisition and strategic partnerships across US and international markets with a decade of executive leadership experience.

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Aleksandr Okhrimenko
Engagement Manager

Seasoned marketing leader with over 10 years of experience in digital marketing, content strategy, and growth-focused campaigns in the insurance and financial services sectors.

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Simona Gershik
Project Manager

Simona manages internal projects and supports client engagement workflows for TYM across the firm's US and international operations, ensuring engagements run smoothly from onboarding through delivery.

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Konstantin Semenov
Financial Analyst

Konstantin supports the tax team with cross-border tax filings, bringing strong technical knowledge of federal and state tax legislation and IRS compliance requirements.

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Nadia Vitt, MBA
Financial Analyst

Nadia coordinates client delivery and onboarding at TYM. She provides financial modeling and FP&A support for fractional CFO clients across the firm's engagements.

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Vadym Korsun
Financial Analyst

Financial Analyst at TYM with over a decade of finance leadership experience, specializing in financial reporting, FP&A, budgeting, and full-cycle accounting for US and international clients.

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Mika Boboyorova
Bookkeeper

Mika provides bookkeeping and accounting support for TYM's founder-owned business clients, specializing in QuickBooks Online setup, historical cleanup, and ongoing monthly accounting services.

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Viktoriia Serebrennikova
Bookkeeper

Bookkeeper at TYM, managing client communications, scheduling, and onboarding to ensure a seamless experience across all service lines.

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Rachel Tulman
Financial Analyst

Financial Analyst at TYM, supporting financial reporting accuracy and transaction-level review for the firm's client base while pursuing a BBA in Finance and Business Law at the University of Miami Herbert Business School.

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