MasTec Executive and Leadership Team

August, 2026

Leadership Overview

MasTec has 8 executives leading key functions including strategy, financial oversight, infrastructure operations, and human capital management.

Focused on delivering critical infrastructure solutions across North America, MasTec drives sustainable growth through engineering excellence and the maintenance of essential energy, utility, and communications networks for diverse industrial clients.

Leadership Roles at MasTec

  • Chief Executive Officer - Ramon Mas
  • Chief Financial Officer - Sean Kelleher
  • Executive Vice President & Chief Financial Officer - Robert Valdez
  • Chief Financial Officer & Executive Vice President - Paul DiMarco
  • Group President, Infrastructure & Industrial - Mark Bader Hellstrom
  • Group President - Ismael Perera
  • Chief People Officer, Clean Energy & Infrastructure - Pari Becker Garberg
  • Executive VP, General Counsel & Secretary - Alberto Cardenas
  • Ramon Mas - Chief Executive Officer

    Ramon Mas, the Chief Executive Officer at MasTec, directs the overarching corporate strategy and long-term vision for the organization. Overseeing the entire portfolio of engineering, building, and maintenance services, the Chief Executive Officer ensures operational alignment across all North American markets. This leadership role involves constant engagement with the Board to refine market positioning within the energy and communications sectors. By prioritizing capital allocation and resource management, Ramon Mas directly influences the company's ability to scale complex infrastructure projects. The Chief Executive Officer maintains a rigorous focus on safety standards and operational efficiency, which remains vital for sustaining competitive advantages. Through consistent evaluation of industry trends, Mas guides the firm toward new growth opportunities in utility and industrial construction, ultimately securing the company's status as a premier provider of essential infrastructure services across the United States and Canada.
    Ramon Mas

    Sean Kelleher - Chief Financial Officer

    Sean Kelleher, the Chief Financial Officer at MasTec, manages the financial health and fiscal reporting structures of the enterprise. Overseeing capital structure and investor relations, the Chief Financial Officer ensures that financial planning supports the aggressive expansion of infrastructure projects. This role involves rigorous analysis of project profitability and cost management across the energy and utility divisions. By optimizing cash flow and liquidity, Sean Kelleher provides the necessary stability for the company to pursue large-scale construction contracts. The Chief Financial Officer collaborates with executive leadership to assess the financial viability of new market entries and technology investments. Through disciplined oversight of accounting practices and regulatory compliance, Kelleher protects the firm's balance sheet. This financial leadership remains critical for maintaining investor confidence while the company executes complex engineering and maintenance services throughout the North American landscape.
    Sean Kelleher

    Robert Valdez - Executive Vice President & Chief Financial Officer

    Robert Valdez, the Executive Vice President & Chief Financial Officer at MasTec, directs the strategic financial operations and treasury functions for the organization. Overseeing the integration of financial data with operational performance, the Executive Vice President & Chief Financial Officer ensures that resource allocation matches the demands of the communications and energy sectors. This role involves managing complex tax strategies and risk mitigation frameworks that support the company's broad infrastructure portfolio. By streamlining financial reporting processes, Robert Valdez enhances transparency and operational agility. The Executive Vice President & Chief Financial Officer works closely with the executive team to evaluate the economic impact of large-scale construction projects across the United States and Canada. Through meticulous financial modeling and performance tracking, Valdez drives the fiscal discipline required to sustain long-term profitability. This leadership role remains essential for navigating the financial complexities inherent in the infrastructure construction industry.

    Paul DiMarco - Chief Financial Officer & Executive Vice President

    Paul DiMarco, the Chief Financial Officer & Executive Vice President at MasTec, oversees the strategic financial planning and corporate development initiatives. Directing the firm's investment strategy, the Chief Financial Officer & Executive Vice President ensures that capital deployment aligns with the company's mission to build and maintain critical infrastructure. This role involves managing banking relationships and debt financing to support the company's extensive operational footprint. By analyzing market trends and competitive dynamics, Paul DiMarco identifies opportunities for financial optimization within the utility and industrial segments. The Chief Financial Officer & Executive Vice President collaborates with other leaders to ensure that financial goals support the broader operational objectives of the firm. Through rigorous oversight of financial controls and internal audits, DiMarco maintains the integrity of the company's fiscal operations. This leadership role remains vital for sustaining the financial health required to execute large-scale infrastructure projects across North America.
    Paul DiMarco

    Mark Bader Hellstrom - Group President, Infrastructure & Industrial

    Mark Bader Hellstrom, the Group President, Infrastructure & Industrial at MasTec, directs the operational execution of large-scale industrial and infrastructure projects. Overseeing the deployment of specialized engineering and construction teams, the Group President, Infrastructure & Industrial ensures that all projects meet rigorous safety and quality standards. This role involves managing the lifecycle of complex infrastructure builds, from initial planning to final maintenance and upgrades. By coordinating resources across the United States and Canada, Mark Bader Hellstrom optimizes project delivery timelines and operational efficiency. The Group President, Infrastructure & Industrial works closely with regional managers to address the unique technical requirements of industrial clients. Through proactive management of field operations and supply chain logistics, Hellstrom drives the successful completion of critical energy and utility projects. This leadership role remains essential for maintaining the company's reputation for excellence in the demanding infrastructure construction market.

    Ismael Perera - Group President

    Ismael Perera, the Group President at MasTec, directs the operational strategy for key business units focused on communications and utility infrastructure. Overseeing the execution of complex installation and upgrade services, the Group President ensures that field operations remain aligned with corporate performance targets. This role involves managing client relationships and ensuring that service delivery meets the high standards required for critical infrastructure networks. By optimizing workforce deployment and equipment utilization, Ismael Perera enhances the productivity of the company's regional teams. The Group President collaborates with other executives to integrate new technologies into the firm's construction and maintenance processes. Through consistent monitoring of project milestones and safety protocols, Perera drives operational excellence across the North American market. This leadership role remains vital for maintaining the company's competitive edge in the fast-paced communications and utility construction sectors.

    Pari Becker Garberg - Chief People Officer, Clean Energy & Infrastructure

    Pari Becker Garberg, the Chief People Officer, Clean Energy & Infrastructure at MasTec, directs the human capital strategy and organizational development initiatives. Overseeing talent acquisition, employee retention, and workforce training, the Chief People Officer, Clean Energy & Infrastructure ensures that the company maintains a skilled workforce capable of executing complex infrastructure projects. This role involves fostering a culture of safety and innovation across the clean energy and infrastructure divisions. By implementing comprehensive human resources policies, Pari Becker Garberg supports the professional growth of employees while aligning workforce capabilities with the company's strategic goals. The Chief People Officer, Clean Energy & Infrastructure works with leadership to address the evolving labor needs of the construction industry. Through effective management of organizational change and employee engagement, Garberg strengthens the company's operational foundation. This leadership role remains essential for attracting and retaining the talent necessary to sustain the firm's growth across North America.

    Alberto Cardenas - Executive VP, General Counsel & Secretary

    Alberto Cardenas, the Executive VP, General Counsel & Secretary at MasTec, directs the legal strategy and corporate governance framework for the organization. Overseeing regulatory compliance and risk management, the Executive VP, General Counsel & Secretary ensures that all business activities adhere to legal standards across the United States and Canada. This role involves managing complex contract negotiations and protecting the company's intellectual property and operational interests. By providing legal guidance on mergers, acquisitions, and large-scale infrastructure projects, Alberto Cardenas supports the company's strategic expansion. The Executive VP, General Counsel & Secretary works closely with the Board to maintain high standards of corporate transparency and ethical conduct. Through proactive legal oversight, Cardenas mitigates potential liabilities and ensures that the firm operates within the necessary regulatory boundaries. This leadership role remains critical for navigating the legal complexities inherent in the infrastructure construction and maintenance industry.

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    Frequently Asked Questions Regarding MasTec Top Executives and Leadership Team

    Who leads MasTec?
    MasTec is led by Ramon Mas (Chief Executive Officer), along with executives such as Sean Kelleher (Chief Financial Officer) and Robert Valdez (Executive Vice President & Chief Financial Officer).
    Who is part of MasTec’s executive team?
    The executive team of MasTec includes leaders such as Ramon Mas (Chief Executive Officer), Sean Kelleher (Chief Financial Officer), Robert Valdez (Executive Vice President & Chief Financial Officer) and other senior executives.
    How many executives does MasTec have?
    MasTec has 8 executives leading key business areas.
    What roles are included in MasTec’s leadership team?
    The leadership team of MasTec includes roles such as Chief Executive Officer, Chief Financial Officer, Executive Vice President & Chief Financial Officer, Chief Financial Officer & Executive Vice President, Group President, Infrastructure & Industrial.