Tamer S.

CoreMetric Advisors provides fractional CFO and FP&A advisory services for SaaS companies ($5M–$40M ARR), focusing on financial reporting, modeling, fundraising readiness, and GTM finance.

Auctane is a shipping and software company that provides an ecosystem of ecommerce shipping solutions (ShipStation, ShipEngine, Stamps.com, ShippingEasy, Metapack, etc.) trusted by millions of merchants globally.

• Led financial reporting, FP&A and GTM finance for a global eCommerce SaaS leader, enabling data-driven decisions across product, sales, and marketing.
• Restructured Deal Desk and pricing strategy, improving gross margin by 3% and driving $10M+ in annual EBITDA gains.
• Developed and implemented a unified financial planning framework, improving forecast accuracy by 25% and enabling faster strategic pivots.
• Partnered with the C-suite to guide capital allocation, M&A evaluation, and operational analytics for revenue growth initiatives.

Amazon is a global technology company and marketplace providing e-commerce, cloud computing (AWS), and digital services to consumers and businesses worldwide.

• Directed strategic and financial planning for global sales verticals, managing multi-billion-dollar P&Ls across public sector and enterprise markets.
• Designed segmentation and coverage models that boosted sales productivity by 1.5% and improved visibility into cost drivers.
• Built an analytics platform for engineering and competitive intelligence, shortening reporting cycles by 15 days and enabling real-time KPI tracking.
• Led cross-functional GTM initiatives that supported $2B in annual revenue growth while reducing operational overhead by 5%.

• Served as primary finance partner for AWS’s largest data center region, overseeing $300M+ in annual Opex and capital investments.
• Delivered double-digit percentage cost savings via vendor contract optimization, energy efficiency initiatives, and operational planning.
• Led strategic financial analysis for global security operations, ensuring compliance, risk mitigation, and financial controls.
• Partnered with engineering and technical leaders to develop investment business cases balancing growth and profitability.

Valtim is a marketing logistics provider specializing in personalized direct mail, scalable digital printing, 3PL, contact center operations, and marketing automation for clients across sectors.

• Directed corporate finance strategy and execution for a multi-line marketing services company, driving profitability across four business units.
• Led end-to-end CapEx and OpEx budgeting and implemented zero-based budgeting, reducing overhead costs by 7%.
• Developed sales forecasting models that increased forecast accuracy by 16% and improved inventory and resource planning.
• Managed financial evaluation of M&A opportunities—DCF, FCF, and multiples analyses—guiding Board-level growth decisions.
• Partnered with the CEO to deliver multi-year strategic growth and value-creation plans.

• Oversaw accounting operations, ensuring GAAP compliance and corporate governance for multi-million-dollar operations.
• Introduced cost-allocation models that improved margin visibility and guided pricing for key client contracts.
• Led system and process automation initiatives, shortening month-end close by 10 days and improving KPI tracking for executive reporting.