Jan Nigel Teves, CLDP

Siegfred B. Zarriz is a corporate trainer with over 13 years of experience in customer service, contact center operations, and learning & development. Having spent most of his career with Transcom, he has trained and coached new hires, supervised nesting programs, developed training materials, and led upskilling initiatives for global telecommunications and customer service accounts. His expertise in coaching, performance improvement, and operations support enables him to deliver practical, workplace-focused training that enhances employee performance and customer experience.

Mary Ann E. Ventura is a seasoned Human Resources executive with nearly 20 years of experience in talent acquisition, learning and development, organizational development, employee relations, and leadership coaching. She has led HR functions across the banking, retail, direct selling, and corporate sectors, partnering with executive leaders to build high-performing teams and develop people-focused strategies. With extensive experience in recruitment, training, coaching, and culture building, Mary Ann is passionate about helping organizations attract, develop, and retain top talent while driving sustainable business growth.

Maria Karen G. Keeler is a seasoned corporate trainer and former BPO Managing Director with over 25 years of experience in training, operations management, business process improvement, and contact center leadership. She has trained thousands of professionals across various industries, specializing in Microsoft Office productivity tools, data analytics, data storytelling, leadership, and operational excellence. Karen is known for delivering highly practical, engaging, and business-focused learning experiences that help professionals improve productivity, make data-driven decisions, and optimize workplace performance.