ConnectOne Bancorp Executive and Leadership Team

August, 2026

Leadership Overview

ConnectOne Bancorp has 6 executives leading key functions including operational strategy, technology infrastructure, commercial banking, business relationship management, and human capital development.

Focused on delivering tailored financial solutions, ConnectOne Bancorp empowers small and mid-sized businesses across the New York Metropolitan area and South Florida through a commitment to personalized service and digital banking innovation.

Leadership Roles at ConnectOne Bancorp

  • President - Matthew Zaloumis
  • President - Thomas DeMedici
  • President, Business Relationship Managerconnectone - Alla Koumoullos
  • Senior Vice President and Chief of Staff - Dawn Machacek
  • Executive Vice President & Chief Technology Officer - Sharif Alexandre
  • Executive Vice President & Chief People Officer - Maria Gendelman
  • Matthew Zaloumis - President

    Matthew Zaloumis, the President at ConnectOne Bancorp, oversees the expansion of commercial banking products and services for small and mid-sized businesses. Focusing on the New York Metropolitan area, the President drives revenue growth by managing complex credit portfolios and business checking accounts. Matthew Zaloumis coordinates with the board to refine the bank's market position, ensuring that commercial lending strategies align with the needs of local professionals. This leadership role involves monitoring regional economic trends to identify new opportunities for business development. By fostering strong relationships with corporate clients, the President secures long-term financial stability for the institution. Zaloumis directs the implementation of cash management services, including treasury direct and automated clearing house solutions, to provide comprehensive support for business clients. Through strategic oversight of commercial operations, the President ensures that the bank delivers consistent value and maintains a robust presence in the competitive financial landscape.
    Matthew Zaloumis

    Thomas DeMedici - President

    Thomas DeMedici, the President at ConnectOne Bancorp, manages the strategic growth of personal banking services and consumer financial products. Overseeing the South Florida market, the President directs initiatives to increase the adoption of time and savings accounts, money market accounts, and consumer credit cards. Thomas DeMedici ensures that the bank's retail offerings remain competitive by optimizing service delivery and customer engagement strategies. This leadership role involves supervising the performance of branch operations and digital banking channels to maximize client satisfaction. By analyzing consumer behavior, the President tailors financial products to meet the specific requirements of individuals and local professionals. DeMedici collaborates with other executives to ensure that retail banking activities support the broader corporate objectives of the bank holding company. Through the effective management of consumer-facing services, the President strengthens the bank's reputation for reliability and personalized financial care in all operating regions.

    Alla Koumoullos - President, Business Relationship Managerconnectone

    Alla Koumoullos, the President, Business Relationship Managerconnectone at ConnectOne Bancorp, leads the acquisition and retention of high-value business accounts. By cultivating deep partnerships with local professionals and small business owners, the President, Business Relationship Managerconnectone drives the utilization of specialized cash management services and commercial lending products. Alla Koumoullos oversees the delivery of customized financial solutions, including remote deposit capture and digital invoicing, to streamline operations for business clients. This leadership role involves identifying unique market needs and translating those insights into actionable banking strategies. By maintaining a high level of service excellence, the President, Business Relationship Managerconnectone ensures that the bank remains the preferred financial partner for businesses in the New York Metropolitan area. Koumoullos coordinates with internal teams to provide seamless support for complex business banking requirements, ultimately contributing to the sustained growth and market influence of the organization.

    Dawn Machacek - Senior Vice President and Chief of Staff

    Dawn Machacek, the Senior Vice President and Chief of Staff at ConnectOne Bancorp, directs internal operations and coordinates strategic initiatives across the executive leadership team. By streamlining communication channels, the Senior Vice President and Chief of Staff ensures organizational alignment with the core mission of providing commercial banking products to local professionals. Dawn Machacek manages high-priority projects that enhance operational efficiency, directly supporting the bank holding company in maintaining its competitive edge within the New York Metropolitan area. This role involves facilitating board interactions and overseeing cross-departmental workflows to optimize resource allocation. Through rigorous oversight of administrative functions, the Senior Vice President and Chief of Staff drives the execution of corporate goals. Machacek maintains a focus on scaling internal processes to support the evolving needs of business clients, ensuring that the bank remains agile while delivering consistent, high-quality financial services to the diverse client base.

    Sharif Alexandre - Executive Vice President & Chief Technology Officer

    Sharif Alexandre, the Executive Vice President & Chief Technology Officer at ConnectOne Bancorp, architects the digital infrastructure necessary for modern commercial banking. Overseeing the development of internet and mobile banking platforms, the Executive Vice President & Chief Technology Officer ensures secure, efficient access to treasury direct and automated clearing house services for business clients. Sharif Alexandre drives the integration of advanced financial technologies to improve remote deposit capture and digital invoicing capabilities. This leadership role involves managing cybersecurity protocols to protect individual and business accounts across the New York Metropolitan area and South Florida. By modernizing the technological stack, the Executive Vice President & Chief Technology Officer supports the bank's commitment to innovation and customer convenience. Alexandre prioritizes the deployment of scalable systems that facilitate seamless wire transfers and automated teller services, ultimately enhancing the overall digital experience for all banking customers.

    Maria Gendelman - Executive Vice President & Chief People Officer

    Maria Gendelman, the Executive Vice President & Chief People Officer at ConnectOne Bancorp, directs the human capital strategy to support the bank's commercial banking mission. Overseeing talent acquisition, professional development, and organizational culture, the Executive Vice President & Chief People Officer ensures that the workforce possesses the expertise required to serve small and mid-sized businesses effectively. Maria Gendelman implements performance management systems that align employee contributions with the bank's strategic goals. This leadership role involves fostering an inclusive environment that attracts top talent in the New York Metropolitan area and South Florida. By prioritizing employee engagement and leadership training, the Executive Vice President & Chief People Officer strengthens the internal capabilities of the institution. Gendelman manages compensation and benefits programs to maintain a competitive edge in the financial services industry. Through the cultivation of a high-performing team, the Executive Vice President & Chief People Officer directly impacts the bank's ability to deliver superior service to all clients.

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    Frequently Asked Questions Regarding ConnectOne Bancorp Top Executives and Leadership Team

    Who leads ConnectOne Bancorp?
    ConnectOne Bancorp is led by Matthew Zaloumis (President), along with executives such as Thomas DeMedici (President) and Alla Koumoullos (President, Business Relationship Managerconnectone).
    Who is part of ConnectOne Bancorp’s executive team?
    The executive team of ConnectOne Bancorp includes leaders such as Matthew Zaloumis (President), Thomas DeMedici (President), Alla Koumoullos (President, Business Relationship Managerconnectone) and other senior executives.
    How many executives does ConnectOne Bancorp have?
    ConnectOne Bancorp has 6 executives leading key business areas.
    What roles are included in ConnectOne Bancorp’s leadership team?
    The leadership team of ConnectOne Bancorp includes roles such as President, President, President, Business Relationship Managerconnectone, Senior Vice President and Chief of Staff, Executive Vice President & Chief Technology Officer.