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
Marco Nunez is a highly accomplished construction leader whose career reflects nearly two decades of progressive responsibility, field mastery, and operational excellence within the drywall and framing industry. Having risen through the ranks from skilled tradesman to senior field and project leadership, Marco possesses a rare combination of hands-on technical expertise and strategic oversight. His experience spans hundreds of projects across commercial, multifamily, hospitality, healthcare, institutional, and high-performance construction environments—each benefiting from his precision, discipline, and unwavering commitment to quality.
Marco’s leadership style is rooted in a deep respect for the craft and the people who perform it. Because he understands every stage of a project from firsthand experience, he brings a level of clarity, foresight, and practicality that strengthens both execution and collaboration. His ability to predict field conditions, anticipate material or labor constraints, and guide teams through complex challenges consistently results in smoother schedules, fewer change orders, and superior workmanship. His track record has made him a trusted partner to general contractors, developers, architects, engineers, and trade partners throughout the industry.
A strategic thinker with strong operational instincts, Marco excels in planning and managing projects with multiple moving parts, tight timelines, and demanding technical requirements. He is known for developing efficient workflows, improving cross-trade communication, and safeguarding budget and schedule integrity through disciplined management. His knowledge extends into advanced building technologies and systems, making him a go-to expert for specialized assemblies and high-performance construction methods.
His areas of expertise include:
• Project Planning and Pre-Construction Leadership
Comprehensive oversight of project feasibility, sequencing, manpower planning, and constructability review; leadership in Value Engineering (VE) to optimize materials, reduce waste, and streamline installation; early identification of design issues, coordination conflicts, and schedule risks.
• Advanced Assemblies and Technical Construction Systems
Mastery of acoustical systems, fire-rated and smoke-rated assemblies, shaft walls, CFS (cold-formed steel) framing, seismic bracing systems, exterior envelope components, and specialty partitions used in code-driven or high-performance structures; ability to execute complex designs with precision and consistency.
• Budget Control, Scheduling, and Risk Mitigation
Strong command of project budgets, field productivity, and resource allocation; development of realistic schedules supported by accurate workforce forecasting; proactive mitigation of supply chain delays, material shortages, change orders, and unforeseen site conditions.
• Field Operations, Crew Leadership, and Workforce Development
Oversight of field teams ranging from small specialty crews to large, multi-phase labor forces; implementation of safety protocols, QA/QC standards, and performance expectations; mentorship and development of apprentices, foremen, superintendents, and future field leaders.
• Cross-Trade Coordination and Communication
Clear, steady communication with general contractors, architects, engineers, inspectors, and key trades; ability to interpret plans, RFIs, submittals, and field directives with precision; strong presence in meetings, walkthroughs, and on-site problem-solving sessions.
• Quality, Safety, and Operational Excellence
Dedication to maintaining the highest standards of workmanship while promoting a safe, organized, and efficient job site; experience conducting safety audits, quality inspections, and continuous improvement initiatives.
Beyond his technical strengths, Marco is recognized for his leadership character and the professionalism he brings to every project. He is respected not only for his knowledge, but for his fairness, calm demeanor, and transparent communication style. He fosters a culture of accountability and craftsmanship, empowering crews to take pride in their work while ensuring every installation meets or exceeds specification. His teams appreciate his clarity and high expectations; industry partners value his consistency and follow-through.
Marco’s career is marked by years of steady contribution to company growth, operational refinement, and customer satisfaction. He has helped organizations expand their field capabilities, improve reliability, elevate job-site performance, and build strong reputations for quality-driven construction. His influence extends far beyond the projects he manages—he strengthens teams, systems, and the long-term health of the companies he serves.
With deep industry expertise, strategic insight, and the hands-on knowledge required to lead with confidence, Marco approaches each project with the same guiding principles: integrity, accountability, communication, and excellence. His leadership continues to shape the success of teams, elevate the standard of field operations, and reinforce lasting partnerships throughout the construction industry.

Erika Iriarte
Chief Finacial Officer
Erika Iriarte brings a strong foundation of financial expertise, analytical discipline, and operational insight to our leadership team. With an extensive background in corporate finance, budgeting, and performance analysis—alongside a deep understanding of the unique financial demands of the construction industry—she plays a central role in maintaining fiscal stability and strategic clarity across all projects and departments. Erika’s ability to blend structured financial management with practical, field-aware decision-making allows our organization to operate with confidence, transparency, and long-term vision.
Erika is committed to continuous professional growth. She is always learning, adapting, and exploring more efficient financial methods, tools, and operational strategies. Her willingness to embrace new technologies, refine systems, and challenge outdated processes ensures that our financial operations remain modern, scalable, and aligned with evolving industry standards. This mindset of constant improvement strengthens not only our workflows, but also the resilience and competitiveness of the company as a whole.
Her work spans a wide range of financial responsibilities essential to organizational health. Erika builds efficient financial systems, forecasts cash flow with accuracy, manages vendor and subcontractor payments, strengthens cost controls, and delivers detailed reporting that supports strategic decision-making at every level of the business. She has an exceptional ability to take complex financial information and translate it into clear, actionable insights—empowering ownership, project managers, and operational teams to make informed choices that reduce risk and preserve profitability.
What sets Erika apart is not just her technical skill, but her integrity, consistency, and collaborative mindset. She views finance as a strategic partner to every department, ensuring that financial decisions support the people, the projects, and the long-term direction of the company. Her presence creates a structured yet supportive environment where teams feel confident, expectations are defined, and financial challenges are approached with clarity and care.
Key strengths and areas of expertise include:
• Comprehensive financial planning, budgeting, and forecasting
• Strong cash-flow management and liquidity oversight
• Proficiency in analyzing project costs, margins, and operational performance
• Development and implementation of efficient accounting and reporting systems
• Vendor and subcontractor payment management with accuracy and timeliness
• Skilled at translating detailed financial data into clear, actionable recommendations
• Deep understanding of cost-control strategies and resource allocation
• Ability to support ownership with long-term financial modeling and strategic planning
• Exceptional consistency, organization, and dedication to accuracy
• Collaborative communication with project managers, field supervisors, and administrative teams
• Problem-solving approach to unexpected financial challenges or operational changes
• Commitment to ongoing professional development and learning new methods, software, and systems
• Adaptability in fast-paced environments and willingness to refine processes for continuous improvement
• Strong ethical foundation and a high level of discretion in managing financial information
• Leadership style focused on clarity, transparency, and strengthening team confidence
Erika’s financial stewardship, growth-oriented mindset, and commitment to operational excellence make her an indispensable part of our organization. Her contributions support not only the day-to-day stability of our operations, but also the long-term foundation on which the company continues to grow, innovate, and succeed.

Daniel Martinez
Chief Construction Officer
Daniel Martinez is a seasoned drywall and framing professional whose deep field expertise, strong leadership skills, and commitment to quality have made him a trusted and influential figure across the construction industry. With an extensive background spanning residential, commercial, and multi-unit developments, Daniel brings a rare blend of technical mastery, situational awareness, and thoughtful team management to every project he leads. His experience covers the full scope of interior and structural construction—ranging from rough framing and complex layout to high-precision drywall installation and finishing—giving him the ability to anticipate challenges, optimize workflow, and ensure consistent execution from start to finish.
Daniel’s reputation is built on his ability to uphold exceptional standards under demanding conditions. He is widely recognized for his disciplined approach to craftsmanship, his high level of reliability, and his unwavering focus on safety and organization. Whether coordinating large crews, navigating tight schedules, or managing multiple work fronts simultaneously, Daniel brings clarity and structure to fast-moving job sites. His practical judgment, combined with his understanding of materials, equipment, and building science, allows him to guide teams through complicated details while maintaining alignment with project goals and specifications.
A natural leader, Daniel excels at fostering teamwork and maintaining strong communication between trades, supervisors, inspectors, and project managers. He has a calm and consistent presence that encourages confidence on the job site, helping crews remain focused and efficient even during schedule shifts, design adjustments, or unexpected obstacles. His ability to interpret blueprints and technical drawings with precision ensures that crews stay on track and that potential issues are identified and resolved early—reducing rework, avoiding delays, and enhancing overall project quality.
Daniel is deeply committed to developing the next generation of skilled tradespeople. He provides hands-on mentorship to workers at all experience levels, training them not only in technical tasks, but also in work ethic, professionalism, and job-site expectations. His mentorship approach has helped strengthen teams, increase productivity, and cultivate an environment where individuals feel supported, motivated, and proud of the work they produce. His leadership extends beyond directing tasks—he actively builds the culture, consistency, and discipline that define successful field operations.
Daniel’s core strengths and contributions include:
• Expert-level knowledge of framing systems, including structural layout, load paths, backing installation, and precision alignment for complex assemblies
• Advanced proficiency in drywall installation, finishing standards, patching, repairs, and specialty wall systems
• Strong blueprint interpretation, ensuring accurate execution of design intent, architectural specifications, and technical requirements
• Effective crew leadership, with the ability to organize teams, delegate tasks, maintain consistent workflow, and uphold high production standards
• Clear and consistent communication with inspectors, general contractors, project managers, and trade partners
• Safety-focused job-site supervision, including enforcement of OSHA standards, hazard identification, and maintenance of clean, organized work areas
• Proven problem-solving ability, addressing field conditions, design conflicts, material constraints, and schedule changes with practical and efficient solutions
• Experience leading both small specialized crews and large multi-team operations, adjusting management style to the needs of each project
• Commitment to craftsmanship, ensuring that finished work meets or exceeds industry standards and client expectations
• Strong sense of accountability, taking ownership of outcomes and consistently delivering dependable, high-quality results
Daniel Martinez’s combination of hands-on expertise, leadership presence, and operational discipline makes him an invaluable asset to any project. He brings the experience of a seasoned tradesman, the perspective of a thoughtful leader, and the work ethic of someone who takes deep pride in the integrity of his craft. His influence strengthens every team he works with, and his commitment to excellence plays a key role in the successful delivery of projects across all scales and complexities.

Monica Duncan
Chief Operating Officer
Monica Duncan brings extensive experience in construction operations and organizational development, with a long history of transforming fast-growing companies into structured, efficient, and scalable organizations. Her background combines hands-on industry knowledge with a sophisticated understanding of workflow design, operational strategy, and team leadership—allowing her to bring clarity and consistency to even the most complex operational environments.
Monica is known for her ability to build systems that support growth without sacrificing quality or communication. She specializes in developing processes that streamline coordination between departments, strengthen accountability, and ensure that every team—field, administrative, project management, and leadership—operates within a unified and predictable framework. Her work consistently results in increased productivity, reduced bottlenecks, and enhanced company-wide collaboration.
Throughout her career, Monica has played a pivotal role in guiding companies through critical stages of expansion. She has designed and implemented operational structures that support larger project volumes, more sophisticated financial oversight, stronger vendor and subcontractor relationships, and smoother team communication. Her ability to understand the unique challenges of the construction industry makes her an invaluable partner to ownership and leadership teams seeking long-term stability and growth.
Monica is also deeply committed to developing the people behind the systems. She has recruited, trained, and supported teams across multiple departments, creating environments where expectations are clear, performance is measurable, and team members feel empowered to contribute at a high level. Her leadership is rooted in transparency, organization, and a solutions-first mindset.
Her communication skills are one of her greatest strengths. Monica excels at connecting owners, field teams, subcontractors, and clients through clear, consistent, and proactive communication methods. She ensures that information flows seamlessly, issues are addressed quickly, and everyone remains aligned on priorities and expectations.
Key strengths and areas of expertise include:
• Development of scalable operational systems and workflows
• Strong understanding of construction operations, scheduling, and project coordination
• Building accountability structures that support company-wide efficiency
• Implementation of reporting systems, SOPs, and departmental frameworks
• Training and developing teams across operations, administration, and project management
• Enhancing communication between owners, field staff, subcontractors, and clients
• Identifying operational bottlenecks and implementing strategic solutions
• Improving productivity through organizational structure and process alignment
• Strong vendor and subcontractor communication systems
• Project documentation, workflow transparency, and administrative accuracy
• Ability to balance high-level strategic planning with practical day-to-day execution
• Leadership style rooted in clarity, consistency, and proactive problem solving
• Commitment to sustainable growth, operational integrity, and long-term stability
Monica is passionate about building companies that grow intentionally—not just bigger, but stronger. Her operational expertise, strategic mindset, and steady leadership ensure that the organization is equipped to deliver consistent results, support its teams, and continue expanding on a foundation of trust, structure, and efficiency.
"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