Great finance requires great talent. We’re delighted to introduce eight finance pros who are joining our dream team to keep the finance operations in order through small business launches, galloping growth, explosive IPO and M&A restructuring, corporate governance and more…

In this fast-paced world, you need just the right finance solution at just the right time. And these folks have that magical combination of both technical and soft skills to help San Francisco and Silicon Valley companies take it to the next stage.

Here’s a quick introduction to some new members of the RoseRyan dream team:

Diego Aragon

Diego returns to RoseRyan from Percolata, where he was the CFO. He’s worked at both private and public companies, digging into planning, modeling, budgeting, restructuring, M&A and operational accounting.

Mary Castellucci

Mary has held finance roles at Cisco Systems, HP, Akamai Technologies and AppDynamics. Her strengths include financial modeling, planning and forecasting, revenue recognition, general accounting and process improvement.

Sara Chamberlin

Sara is all about the needs of small business. Her areas of experience include business analytics, accounting and auditing services, financial planning and analysis, and budgeting.

 Joe Kontur

Joe spent 15 years with Panasonic, where he held roles in finance, engineering, IT and operations. He’s also worked with semiconductor and software companies. And he’s got a great blend of project management, FP&A, business and finance operations experience.

Irene O’Keefe

Irene loves working with our small business clients, and she’s off and running with office management, business analytics, accounting services and payroll.

Beth Schwartzmiller

Beth is another small businesses maverick who will handle accounting, office management, payroll and business analytics for a variety of clients.

Su Hooi Thang

Su Hooi joins our Corporate Governance team and has previously worked for Intel, Altera and Motorola in her career. She’s great at financial audits, SOX compliance and operations.

 Steven Vattuone

Most recently the CFO at Electric Cloud, Steven has held a variety of senior finance leader positions, and he was also an audit manager at PwC. He excels at budgeting and planning, financial modeling, public companies and accounting operations.


We love to propel companies on to the next stage of growth with the right finance solutions. Do you know a finance ace who should be part of our incredibly sharp finance dream team? Like what you see about our dynamic and super-friendly culture? Thanks for referring great candidates our way, by reaching out to our talent expert Michelle Hickam at [email protected].

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