We operate with purpose, expertise, and a relentless commitment to excellence bringing bold ideas to life through strategic execution and world-class media positioning.
MEET THE TEAM!
JONATHAN DE GUIA
Chief Executive Officer (CEO)
JDG Media & Marketing Group is the Founder and Chief Executive Officer of JDG Media & Marketing Group, a premier media and marketing firm specializing in high-impact visibility strategies for authors, entrepreneurs, and thought leaders.
Leading JDG Media & Marketing Group with a vision to transform authors and brands into globally recognized authorities through elite media exposure and strategic positioning. Overseeing high-level strategy, partnerships, and global expansion. His leadership ensures that every client is positioned on platforms that build credibility, influence, and long-term legacy.
Our People
Caroline Caldwell
Senior Literary Agent | Strategic Author Development
Caroline Caldwell is a Senior Literary Agent specializing in strategic author development, narrative positioning, and long-term brand alignment. With a sharp eye for market viability and storytelling impact, she works closely with authors to refine their voice, strengthen their message, and prepare their work for high-level exposure across publishing and media platforms. Her approach goes beyond traditional representation Caroline focuses on building author authority. She carefully evaluates each project’s potential and aligns it with the right opportunities, ensuring that every book is positioned not only for visibility, but for credibility, recognition, and sustained growth. Caroline plays a key role in bridging the gap between creative vision and market execution. From manuscript positioning to strategic media alignment, she ensures that authors are presented with clarity, confidence, and purpose. Her work consistently reflects a commitment to excellence, precision, and results-driven outcomes. She is particularly known for guiding authors into elevated spaces where their stories are not just shared, but recognized as influential and impactful within their field.
VICTORIA STERLING
Executive Director | Media, Brand Strategy & Global Campaigns
Victoria serves as Executive Director of JDG Media & Marketing Group, leading the development and execution of advanced media strategies, brand positioning, and global campaign initiatives. With a strong command of both creative direction and market strategy, Victoria ensures that every campaign whether a celebrity interview, digital billboard placement, or media exposure rollout is designed to captivate audiences and establish lasting authority. Her leadership plays a critical role in shaping how clients are presented across high-visibility platforms, ensuring each brand stands with distinction and purpose.
MASON WELLINGTON
President | Media & Client Strategy
Mason serves as President of JDG Media & Marketing Group, overseeing day-to-day operations, client success, and strategic execution across all media and marketing initiatives. Working directly alongside the CEO, Mason ensures that every campaign from celebrity interviews to global visibility placements is executed with precision, consistency, and a results-driven focus. His leadership bridges vision and execution, turning strategy into measurable outcomes.
ANGELA JOHNSON
Senior Literary Consultant | Client Relations & Talent Coordination
Angela serves as Senior Media Agent at JDG Media & Marketing Group, specializing in client relations, talent coordination, and media engagement. She plays a vital role in connecting authors and clients to high-impact opportunities, ensuring each engagement is handled with professionalism, clarity, and strategic intent. With a strong focus on communication and relationship management, Angela guides clients through every stage of their media journey from initial onboarding to interview coordination and campaign alignment. Her ability to anticipate client needs and maintain a smooth workflow ensures that every interaction reflects the company’s commitment to excellence.
Shielby Courtney
Senior Literary Agent | Author Relations & Acquisition
Shelby is a Senior Literary Agent specializing in author relations, acquisition, and strategic client development. She plays a pivotal role in identifying promising voices and guiding authors through the early and transitional stages of their professional journey. With a strong foundation in relationship management and structured onboarding, ensures that each author receives clear direction, aligned positioning, and a seamless experience from initial engagement through project development. Her approach combines attentiveness with strategic insight helping authors move forward with confidence and purpose. She works closely with clients to understand their goals, refine their direction, and align their work with opportunities that support visibility, credibility, and long-term growth. Her ability to maintain consistency, clarity, and professionalism across all interactions makes her a key contributor to the overall client experience. is committed to building strong author relationships while ensuring that every project is positioned with intention, structure, and forward momentum.
CARMEN DE GUIA
Finance Lead | Payment Processing & Financial Operations
Carmen represents the forefront of financial excellence and operational accountability within JDG Media & Marketing Group. With a commanding yet approachable presence, she leads the Finance & Payment Processing Division ensuring that all financial managed with accuracy, compliance, and strategic oversight. Her role extends beyond technical execution. Carmen is instrumental in maintaining trust, safeguarding financial processes, and reinforcing the company’s credibility across all client engagements. Through disciplined systems and a detail-driven approach, she ensures seamless financial coordination that supports the company’s high-level media and marketing operations.
Felix Chance
Senior Production Fulfillment | Media & Campaign Delivery
Felix serves as Senior Production Fulfillment at JDG Media & Marketing Group, overseeing the final execution, coordination, and delivery of all media and marketing campaigns. Operating at the core of production, Felix ensures that every project from cinematic book trailers to global media placements is completed with accuracy, efficiency, and uncompromising quality. His role is essential in transforming strategy into fully realized deliverables, ensuring that every campaign meets both client expectations and the company’s premium standards. With a strong focus on timelines, quality control, and operational flow, Felix plays a critical role in maintaining the integrity and success of each production.
Join Our Team