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About Us

We are a collective of proven people leaders and operators that believe deeply in building values-driven and coach-centric cultures.

Aubergine Partners was founded by Siobhan O’Leary in 2013. With over 25 years of international experience as a Human Resource Executive, Siobhan has held senior-level positions with renowned organizations such as Hyatt Hotels, Four Seasons Hotels & Resorts, The Carlyle Hotel, Rosewood Hotels and Resorts Corporate, and Convene. Convene received significant recognition during her tenure, being awarded the Top Company Culture Award by Smart CEO Magazine in 2017, ranking #11 on Fortune Magazine’s Great Places to Work, being named one of Forbes’ most promising companies, and earning the Best Workplace title from Inc. Magazine.

Aubergine Partners’ proprietary leadership program was named in the top 5 globally by the International Coaching Federation (ICF). In 2023, Aubergine Partners was recognized as a Top Human Resource Service Provider.

Our Aubergine Ensemble

Our curated team of business leaders are experts in their fields with multiple coaching certifications. Grounded in continuous learning, we work with senior leaders and organizations across industries to address real challenges and deliver measurable results. Each member brings unique expertise, contributing to our dynamic synergy. Our team fosters laughter and joy in every client interaction. Get to know the talented individuals who drive our success!

Michelle Szmjada-Villatoro, CPC

Operations & Business Development

Sandi Mitchell, CPC

Certified EOS Implementer

Mary Mattson-Quagliana, CPC

Internal & External Brand Validation

Melissa O’Hara

Organizational Development, Certified Positive Intelligence & Life Design Coach

Rebecca Gordon Sewell

People Operations & Leadership Coach

Brian Schwartz

Coach & Facilitator

Marcia Kelly, CPC, SHRM, SCP

People Operations, Learning and Development

Marcie Lieberman, CPC

Business Operations and Brand Validation

Ruth Cusack

Total Rewards Strategist

Marilyn Draper

Executive Team Performance

What Our Clients Say

"Creating a winning culture and positive team environment was always an essential priority when opening my business...Siobhan gave us the tools we needed to understand and communicate with one another in a productive way. Which led to establishing an intentional office culture that we still harness momentum from to this day."

-Taylor Lambert Samuels, Business Owner, State Farm

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