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About O’Castle

Expert Advice ➜ Proven Programs ➜ Business and Performance Impact

Leverage the Power of Cohesive Teams and Targeted Data

The O’Castle Group provides data, tools, advisory and implementation services tailored to the unique demands of every industry. There is no one-size-fits all solution when it comes to transforming RevOps processes, which is why we take a bespoke approach with every client we serve. By taking time to truly understand your total addressable market (TAM), your company structure, and your goals, we can partner with you to create solutions that last.


We ensure that you’re not just looking at data, but that you’re looking at the right data to make informed decisions that can leverage resources to achieve your goals quickly. Every partnership with The O’Castle Group ensures a journey from operational challenges to unparalleled growth and efficiency. Regardless of size or industry, clients trust us to steer their revenue potentials toward actualized success and sustainable market leadership.

Our Strategic Advisory Team

Eric J. Gillespie

Chief Revenue Acceleration Strategist

Eric Gillespie brings a wealth of expertise and proven innovative solutions to organizations in a variety of industries. He is passionate about helping companies achieve sustainable growth and operational excellence, and has a 15-year track record of launching companies into exponential RevOps growth. His keen insights, rooted in hyper-targeted data analytics, are driven by a profound understanding of market dynamics, making him a sought-after consultant for startups and Fortune 500 companies alike.

Connect with Eric on LinkedIn.

Chelsea Byers

Senior Business Analyst and Strategist (Ed Tech)

Chelsea Byers stands out as a pivotal figure in the Saas and Ed Tech sectors, offering specialized consulting services in Revenue Acceleration and Growth Roadmap development. Her expertise is grounded in a Master’s degree in Research from The London School of Economics, and is coupled with her extensive experience in orchestrating product strategies for K-12 and adult learning applications. She also has a wealth of experience in guiding Customer Success teams towards significantly improving Net Revenue Retention and securing a consistent Net Promoter Score (NPS) of 75+.

Monica Zavala

Senior Business Analyst and Strategist (Agriculture)

Monica Zavala is a distinguished professional in the agricultural sector, renowned for her exceptional ability to drive revenue growth and implement operational excellence within agricultural organizations. With a rich background in agribusiness, Monica has demonstrated a profound passion and commitment to advancing agricultural practices and enhancing organizational efficiency. Her expertise is underpinned by a Master’s degree in Agribusiness/Agricultural Business Operations from The University of Georgia, equipping her with the knowledge and skills to navigate the complexities of the agricultural industry. Monica’s dedication to her field is evident in her innovative approaches to business challenges, making her a pivotal figure in the transformation and success of agricultural enterprises.

Brookes Bowles

Digital Revenue Operations Specialist

Brookes Bowles is a highly skilled professional specializing in revenue operations, digital marketing, and sales operations. With a comprehensive understanding of the interconnectedness between sales, marketing, and technology, Brookes excels at optimizing business processes to drive growth and efficiency. Her expertise includes developing and implementing strategic plans that leverage data analytics, CRM systems, and digital marketing tools to enhance sales performance and increase revenue. Brookes is known for her ability to bridge the gap between technical solutions and business goals, ensuring that operations are aligned with overall company objectives.

Khayin Molokwu

Revenue Acceleration Account Executive

Khayin Molokwu, at The O’Castle Group, stands at the forefront of enhancing your business’s success and growth. As a dynamic leader in management and business development, Khayin specializes in transforming client experiences through meticulous process improvement and a deep focus on client success. His approach to driving revenue acceleration for Clients of The O’Castle Group revolves around identifying and rectifying process inefficiencies, leveraging in-depth data analysis, and innovating your sales funnel for maximum effectiveness. At The O’Castle Group, Khayin is your dedicated partner, renowned for crafting tailored solutions that enhance the value of our services across any industry or sector, ensuring your business not only meets but exceeds its goals.