While competitors have focused on chatbots and low-cost automation, Synthesys is built voice-first. Phone calls remain the most critical channel for sales, customer support, and retention, and we’re redefining how they’re handled. Our proprietary AI telecom infrastructure, from triple-layer prompting to contextual live calling, replaces low-skill labor with intelligent, scalable systems that never miss a chance to capture revenue or deliver a world-class customer experience.
Numbers Driving Limitless Growth
Our History
Synthesys was founded on the insight gained from years of direct experience in high-volume sales environments, where making more than 150 calls per day was the standard. Members of our leadership team began their careers in these demanding settings and later ran organizations across industries in scaling their revenue operations. Through this work, one reality became clear: traditional telecommunications models were fundamentally limited in their ability to support growth at modern speed and scale.
Synthesys was created as the institutional answer to that challenge. Built on advanced AI and proprietary telecommunications infrastructure, the platform consolidates follow-up, sales, upsells, and revenue generation into a unified system capable of scaling without limit. What began as practical experience in the trenches has evolved into a global enterprise mission: to transform the phone into the most powerful growth channel for businesses worldwide.
20
PEOPLE
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CLIENT RETENTION
Some companies our
team has worked with:
Our Leadership Team
Synthesys' leadership team blends enterprise expertise with an appetite for disruptive innovation.
David H. Reineke
Founder & Global Managing Director
David H. Reineke is the Founder and Global Managing Director of Synthesys, where he leads the company’s mission to redefine global telecommunications through enterprise-grade AI infrastructure. Prior to establishing Synthesys, he held commercial roles at PayPal and later founded and scaled one of the largest B2C online education businesses of its era. Over the course of his career, he has overseen more than $60 million in revenue across 1,000+ B2B transactions worldwide.
Harsimran Singh
Chief Operating Officer
Harsimran Singh serves as Chief Operating Officer at Synthesys, bringing expertise in computer science, automation, and enterprise systems to drive operational excellence. He has been instrumental in developing the proprietary AI frameworks and contextual call technologies that power Synthesys’ global platform. Prior to Synthesys, he built and scaled advanced automation systems for high-growth companies, enabling efficiency, scalability, and cost reduction through intelligent workflows.
John P. Besmer
Global Head of Sales
John holds a degree in Business Administration with a focus on International Marketing and has built a track record of driving revenue growth for SaaS and telecommunications firms across North America and Europe. With deep expertise in global account strategy, outbound prospecting, and high-performance sales leadership, he now oversees Synthesys’ global sales strategy, expanding market presence and forging long-term client partnerships.
Rick Kabuto
Fulfillment Lead
Rick Kabuto serves as Fulfillment Lead at Synthesys, where he oversees the delivery and execution of client projects with precision and consistency. With a background in systems integration, data analysis, and machine learning, he brings a unique blend of technical expertise and operational discipline to the role. Rick ensures that every implementation of Synthesys technology meets the highest standards, while continuously refining processes to drive efficiency, scalability, and client satisfaction.
Sagar Yadav
Design Lead
Sagar serves as Lead Designer at Synthesys, bringing a unique background in architecture and human–computer interaction to his role. With expertise across UX, visual design, and front-end development, he has led redesigns, built scalable design systems, and delivered intuitive, user-centered digital experiences. At Synthesys, Sagar shapes the company’s visual identity and product design, ensuring that every interaction is both engaging and aligned with enterprise-grade performance.
Viktoria Riabchenko
Director of Client Relations
As Director of Client Relations at Synthesys, Viktoria serves as the primary bridge between clients and the organization, ensuring seamless communication and exceptional service at every stage of engagement. Fluent in Russian, German, Ukrainian, and English, she brings a global perspective and the ability to connect with clients across diverse markets. Her focus on building strong, trusted relationships enables Synthesys to deliver not only technical excellence, but also an outstanding client experience worldwide.
Our Offices
Dubai, United Arab Emirates
Meydan Grandstand, 6th floor, Meydan Road, Nad Al Sheba, Dubai, UAE
Los Angeles, California USA
1480 Vine Street #2003, Los Angeles, California 90028, USA
Become a part of Synthesys
Join our team
Careers
Shape the future of telecom with us. Build, innovate, and grow in a team where your work makes an immediate impact. At Synthesys, you’ll tackle complex challenges that accelerate global business transformation.
Emerging Talent
Kickstart your career at Synthesys. Gain hands-on experience, mentorship, and the chance to make your mark from day one. We equip future leaders with the tools to deliver lasting impact at scale.
Our Investors