Management Team


Oliver Lemanski

Chief Executive Officer

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Oliver has extensive experience building and growing international service supply chain businesses. Oliver held the position of Managing Director EMEA for five years at OnProcess, successfully driving year-on-year growth in the region while establishing strategic relationships with Elekta, HPE, Cisco, Varian, SAP Ariba and others. Prior to OnProcess, he held various executive roles at TNT, including Global Head of Service Logistics, where he ran the commercial side of a €150m+ business focused on technology, medical device and industrial markets; and Industry Marketing Director, where he led commercial salesforce and value proposition transformation efforts. Earlier in his career, Oliver set up MGH Consulting’s APAC practice which provided aftermarket strategy and implementation support to clients in the technology and logistics markets. Oliver holds a Degree and Masters from University of Southampton, UK and is an alumnus of IMD Business School in Switzerland.


Chris Rezendes

Chief Customer Officer

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Chris has an 18-year track record of growing revenues for services and technology companies. He leverages his leadership, sales, marketing, and customer service expertise to drive OnProcess’ expansion across multiple markets. Before joining OnProcess, Chris held a variety of executive positions including Chief Commercial Officer and, earlier, Chief Sales and Marketing Officer at Windham, Chief Sales Officer at CSS, Vice President and Managing Director of Sales at Convergys Corporation, and Director of Sales for Americas at Amdocs Inc. He is a former United States Marine Corps Officer and Naval Aviator and a graduate of Bridgewater State University

Meave O’Marah

Chief Financial Officer

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Meave O’Marah is the CFO of OnProcess technology. Prior to joining, she served as CFO of several private and public organizations, including Windham Professionals, Goorin Brothers, Inc., the Olivia Companies, Interaction Institute for Social Change, and IISC Ireland. She serves as an advisor at AdvisoryCloud, and a previous board member of Everybody Wins! USA. Meave earned her Bachelor’s degree from Harvard College, a Master’s degree from the University of Oxford, and subsequently a Master’s in Business Administration and Entrepreneurship from Babson College. She brings a proactive and strategic approach to financial management, leveraging analytics and automation for quantifiable results.

Andy Bailey

Chief Marketing Officer

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Andy is a Marketing and Communications Executive with over 20 years of experience in building, leading, and developing international marketing functions and a track record of helping software, SaaS, and IT services sector companies transform from being good to being great. A sales and product-focused marketer Andy has deep knowledge across the full marketing spectrum, including data-driven digital marketing, marketing automation and metrics, and brand development. A firm believer in organizational authenticity, Andy believes that successful marketing, and indeed successful 21C businesses must deliver against both value and purpose.

Douglas S. Tripp

General Counsel

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Doug leads the legal and regulatory compliance areas for OnProcess and has a rich and diverse legal/compliance background, including more than 20 years of experience in the full range of information technology and business process outsourcing transactions. Before joining OnProcess, Doug spent many years in private practice, providing clients with outsourcing industry expertise as well as lending know-how in several areas, including banking, commercial transactions, and financial restructuring. Doug brings a business-centered results-oriented focus and is passionate about advancing OnProcess as an industry-leading global service provider. 


Helen Zarba

Global Chief Human Resources

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Helen joined OnProcess in February 2021, taking responsibility as Global Chief Human Resources Officer. Helen will spearhead our employee engagement initiatives across the business, driving the ability to attract and retain talent, provide career development paths, and strengthen leadership capabilities at all levels of the organization. Helen has held senior HR positions for over 20 years in global organizations such as The Gillette Company, Proctor and Gamble, and Bright Horizons Family Solutions including international assignments supporting Europe and AMEE. She has a particular passion for employee development and engagement, and most specifically enjoys cultivating environments in which a diverse talent base can thrive. She has a Bachelor’s degree from Warwick University, UK, and a Master’s degree from Reading, UK.

Darren O’Meara

Chief Information Officer

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Darren O’Meara joins OnProcess Technology from Williams Lea Tag (WLT), a leading global provider of skilled business‐critical support services, where he had been over the last 15 years, most recently as the Chief Technology Officer and Global Head of Technology Services Portfolio. Darren joined Williams Lea in 2005 leading the solution development for some of the largest BPO transactions of the time for major insurance and financial services clients such as Prudential and Aviva. Following a relocation from the UK to the US in 2008, he established the company’s US Technology, PMO, and Solutions capabilities, enabling the winning of new deals with some of the largest US brands. He was subsequently appointed to global roles for the same functions and led the defining and driving of a new technology strategy, with the overall goal of transforming the company into a digital-first organization.