Appian Executive and Leadership Team

August, 2026

Leadership Overview

Appian has 5 executives leading key functions including strategy, marketing, operations, finance, and human resources.

Focused on delivering AI-powered automation for mission-critical work, Appian accelerates digital transformation for large enterprises and government organizations through a platform built for reliability, scalability, and secure process optimization.

Leadership Roles at Appian

  • Founder, Chief Executive Officer & Chairman of the Board - Matt Calkins
  • Chief Financial Officer - Serge Tanjga
  • Chief Marketing Officer - David Crozier
  • Chief of Staff - Alexandra Monks
  • Chief People Officer - Susan Charnaux
  • Matt Calkins - Founder, Chief Executive Officer & Chairman of the Board

    Matt Calkins, the Founder, Chief Executive Officer & Chairman of the Board at Appian, directs the overarching vision and strategic trajectory of the organization. By prioritizing AI-powered automation, the Chief Executive Officer & Chairman of the Board ensures the platform remains the premier choice for enterprises seeking to streamline complex business processes. This leadership role involves constant engagement with the Board to maintain high standards of corporate governance and long-term value creation. Overseeing global market expansion, Matt Calkins drives the adoption of intelligent solutions that simplify operations across diverse industries. The Founder, Chief Executive Officer & Chairman of the Board maintains a focus on innovation, ensuring the technology stack supports consistent business outcomes. Through rigorous oversight of product development and market positioning, the Chief Executive Officer & Chairman of the Board secures the competitive advantage of the company in the global software landscape.
    Matt Calkins

    Serge Tanjga - Chief Financial Officer

    Serge Tanjga, the Chief Financial Officer at Appian, manages the financial health and capital allocation strategies that support the growth of the enterprise. By overseeing fiscal planning and reporting, the Chief Financial Officer ensures the company maintains the resources necessary to advance AI-powered automation and secure, scalable software solutions. This role involves rigorous analysis of market performance and investment opportunities to drive long-term value. Serge Tanjga directs the financial operations that underpin the digital transformation services provided to government and enterprise clients. By collaborating with the Board and executive leadership, the Chief Financial Officer aligns financial goals with the broader mission of simplifying complex business processes. The Chief Financial Officer maintains a focus on transparency and compliance, ensuring that all fiscal activities support the stability and reliability of the platform. Through strategic financial management, the Chief Financial Officer secures the foundation for future innovation.
    Serge Tanjga

    David Crozier - Chief Marketing Officer

    David Crozier, the Chief Marketing Officer at Appian, architects the global brand strategy and demand generation initiatives that fuel market penetration. By articulating the value of AI-powered automation, the Chief Marketing Officer ensures that large enterprises and government organizations recognize the platform as the standard for mission-critical work. This role involves managing complex marketing funnels and digital campaigns that highlight the reliability and scalability of the software. David Crozier drives cross-functional collaboration with sales teams to align messaging with revenue targets across North American and international markets. By analyzing market trends and customer feedback, the Chief Marketing Officer refines the narrative to support digital transformation efforts. The Chief Marketing Officer maintains a focus on brand equity, ensuring that all communications reflect the commitment to secure, intelligent solutions that simplify operations and enhance decision-making for every client.
    David Crozier

    Alexandra Monks - Chief of Staff

    Alexandra Monks, the Chief of Staff at Appian, coordinates executive operations and facilitates the execution of strategic priorities across the organization. By managing the flow of information between the C-suite and various departments, the Chief of Staff ensures alignment with the mission of providing AI-powered automation for mission-critical work. This role involves optimizing internal processes to improve efficiency and support the rapid scaling of business operations. Alexandra Monks drives the implementation of key initiatives that enhance decision-making and organizational agility. By overseeing high-priority projects, the Chief of Staff supports the leadership team in achieving consistent business outcomes. The Chief of Staff maintains a focus on operational excellence, ensuring that resources are allocated effectively to support digital transformation. Through constant monitoring of organizational performance, the Chief of Staff secures the operational stability required to maintain the market position of the company.

    Susan Charnaux - Chief People Officer

    Susan Charnaux, the Chief People Officer at Appian, directs the human capital strategy and talent development programs that sustain the workforce. By fostering a culture of innovation and excellence, the Chief People Officer ensures the company attracts the expertise required to build AI-powered automation for mission-critical work. This role involves designing programs that support employee engagement, professional growth, and organizational diversity. Susan Charnaux drives initiatives that align the workforce with the mission of accelerating digital transformation for large enterprises. By overseeing talent acquisition and retention, the Chief People Officer ensures that the organization maintains the technical and operational capacity to deliver reliable, secure solutions. The Chief People Officer maintains a focus on building a high-performance environment, ensuring that every team member contributes to the consistent business outcomes expected by clients. Through strategic workforce planning, the Chief People Officer secures the human potential necessary for long-term success.
    Susan Charnaux

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    Frequently Asked Questions Regarding Appian Top Executives and Leadership Team

    Who leads Appian?
    Appian is led by Matt Calkins (Founder, Chief Executive Officer & Chairman of the Board), along with executives such as Serge Tanjga (Chief Financial Officer) and David Crozier (Chief Marketing Officer).
    Who is part of Appian’s executive team?
    The executive team of Appian includes leaders such as Matt Calkins (Founder, Chief Executive Officer & Chairman of the Board), Serge Tanjga (Chief Financial Officer), David Crozier (Chief Marketing Officer) and other senior executives.
    How many executives does Appian have?
    Appian has 5 executives leading key business areas.
    What roles are included in Appian’s leadership team?
    The leadership team of Appian includes roles such as Founder, Chief Executive Officer & Chairman of the Board, Chief Financial Officer, Chief Marketing Officer, Chief of Staff, Chief People Officer.