Meet Our Leaders
Get to know the experienced individuals driving MARK Builders Group. Our leadership is committed to quality, customer satisfaction, and building lasting relationships. Learn more about the values that guide our company.

Marco Nunez
Chief Executive Officer
With nearly two decades of hands-on experience in the drywall and framing industry, Marco Nunez stands as a trusted leader and respected expert in construction management. His career—evolving from skilled tradesman to senior operational leadership—has given him a comprehensive, practical understanding of every stage of a project, from initial planning to final closeout.
Strategic Expertise and Project Mastery
Marco’s depth of knowledge spans the full lifecycle of complex commercial, multifamily, and specialty projects. His core proficiencies include:
• Project Planning & Pre-Construction:
Leadership in Value Engineering (VE), constructability reviews, and sequencing strategies that optimize material usage, reduce labor hours, and streamline project schedules.
• Specialized Systems:
Expert execution of advanced acoustical assemblies, fire-rated systems, seismic solutions, cold-formed steel (CFS) framing, and high-performance wall systems used in large-scale and technically demanding structures.
• Budget & Risk Management:
A proven ability to keep multimillion-dollar projects on time and on budget through disciplined scheduling, proactive coordination, and strong mitigation strategies for supply chain and field risks.
• Team Development & Field Leadership:
Known for cultivating highly skilled crews, strengthening safety culture, and mentoring future superintendents and project leaders—reinforcing dependable, disciplined field performance.
Recognized for his unwavering commitment to excellence, Marco has contributed to years of consistent growth and operational improvement in every organization he has led. He is respected by general contractors, developers, and industry partners for his reliability, technical expertise, and consistent delivery of superior workmanship.
Marco approaches each project with strategic insight, hands-on knowledge, and a commitment to building lasting relationships founded on transparency, integrity, and accountability.

Daniel Martinez
Chief Construction Officer
With decades of hands-on experience in drywall and framing, Daniel Martinez is a master of the craft and a natural leader on the job site. His deep knowledge of construction techniques, materials, and problem-solving allows him to guide teams efficiently while maintaining the highest standards of quality and safety.
Daniel’s approach to leadership is rooted in experience—he knows what it takes to get the work done right, and he leads by example, mentoring crew members and fostering a culture of skill, accountability, and collaboration. Respected by tradespeople and supervisors alike, he combines practical know-how with the ability to organize and motivate a team, ensuring projects run smoothly and are completed to the highest standard.

Erika Iriarte
Chief Finacial Officer
Erika Iriarte brings extensive financial expertise and a sharp eye for detail to our leadership team. With years of experience in corporate finance, budgeting, and performance analytics—paired with years of observing the operational demands of the construction industry—Erika ensures disciplined fiscal management and strategic oversight on every project.
Her strengths include developing efficient financial systems, forecasting cash flow, managing vendor payments, strengthening cost controls, and providing clear reporting that supports confident decision-making. Erika has a proven ability to translate complex financial data into actionable insights, allowing ownership and project leaders to stay aligned, reduce risk, and maintain profitability throughout each phase of construction.
Beyond her technical skills, Erika is known for her integrity, consistency, and dedication to operational excellence. She approaches finance not as a back-office function, but as a proactive driver of organizational strength and long-term growth. Her leadership helps create a work environment where teams feel supported, expectations are clear, and financial decisions serve both the project and the people behind it.
Erika’s financial stewardship and collaborative mindset make her an invaluable asset to our organization—contributing not only to the stability of today’s operations, but to the foundation of tomorrow’s success.

Monica Duncan
Chief Operating Officer
Monica Duncan brings over a decade of hands-on experience in the construction industry and a proven track record of building scalable operational systems that transform growing companies into high-performing, efficient organizations. Known for her ability to bring order to complexity, Monica specializes in designing streamlined processes, improving workflow communication, and implementing operational frameworks that support long-term stability and rapid growth.
Monica has played a pivotal role in helping multiple companies develop the internal structure needed to scale—creating systems that strengthen accountability, reduce inefficiencies, and unlock higher profitability. Her unique blend of strategic vision and practical experience allows her to see both the “big picture” and the operational details required to execute it.
With deep communication expertise, Monica excels at aligning owners, teams, subcontractors, and clients through clear, consistent, and proactive communication methods. She has built and trained teams across construction operations, project management, vendor relationships, and administrative systems, ensuring that every department operates with clarity, accuracy, and confidence.
She is passionate about building businesses that not only grow, but grow sustainably. Her leadership ensures that the company operates with integrity, transparency, and efficiency at every level.
"The leadership at MARK Builders Group truly cares about their clients and the quality of their work. They made our project a seamless and enjoyable experience."
Happy Client, San Diego, CA