By Light Executive and Leadership Team

November, 2026

Leadership Overview

By Light has 7 executives leading key functions including financial strategy, marketing, technology innovation, operations, high fidelity solutions, cyberspace operations, and corporate leadership.

Focused on delivering advanced systems engineering for government networks, By Light maintains a commitment to excellence in both classified and unclassified infrastructure design across the defense and civilian sectors.

Leadership Roles at By Light

  • Chief Financial Officer - Kylie Allen
  • Chief Operating Officer - Mike Bowser
  • President - Brian Donahue
  • Chief Marketing Officer - Diane Hockenberry
  • Chief Technology Officer - Stuart Armstrong
  • Chief Technology Officer, High Fidelity Solutions - Robert Milchenski
  • Chief Technology Officer, Cyberspace Operations - Billy Smith
  • Kylie Allen - Chief Financial Officer

    Kylie Allen, the Chief Financial Officer at By Light, directs all fiscal planning and capital allocation strategies. Overseeing the financial health of the organization, the Chief Financial Officer ensures rigorous compliance with government contracting regulations while optimizing resource distribution across diverse engineering projects. This leadership role involves managing complex budgetary frameworks to support the expansion of classified and unclassified network services. By implementing robust financial controls, Kylie Allen directly impacts the long-term sustainability of the company. Allen monitors cash flow and investment opportunities to maintain a competitive edge in the federal marketplace. Through precise fiscal oversight, the Chief Financial Officer secures the necessary funding to drive innovation in systems engineering, ultimately ensuring that By Light remains a stable and reliable partner for critical government agencies requiring high-level technical infrastructure management.

    Mike Bowser - Chief Operating Officer

    Mike Bowser, the Chief Operating Officer at By Light, directs the daily operational execution and project delivery workflows. Overseeing the internal processes that support systems engineering, the Chief Operating Officer ensures that all government network projects remain on schedule and within scope. This leadership role involves managing the operational infrastructure and coordinating resources across the various departments to maximize efficiency. By streamlining project management methodologies, Mike Bowser directly impacts the operational success of the company. Bowser monitors performance metrics to identify areas for improvement in service delivery. Through active management of the workforce and operational assets, the Chief Operating Officer supports the company's mission to provide high-quality technical services. By maintaining operational excellence, Bowser ensures that By Light consistently meets the complex demands of the DoD and civilian marketplaces.

    Brian Donahue - President

    Brian Donahue, the President at By Light, directs the overall corporate strategy and long-term growth trajectory of the firm. Overseeing the alignment of all business units, the President ensures that the company remains focused on its core mission of providing superior systems engineering for government networks. This leadership role involves guiding the executive team and maintaining strong relationships with key stakeholders across the DoD and civilian sectors. By fostering a culture of innovation and accountability, Brian Donahue directly impacts the company's market position and operational success. Donahue evaluates strategic opportunities for expansion and ensures that the organization remains agile in a competitive landscape. Through decisive leadership, the President coordinates the efforts of all departments to achieve corporate objectives, ensuring that By Light continues to deliver high-value technical solutions to its diverse federal client base.

    Diane Hockenberry - Chief Marketing Officer

    Diane Hockenberry, the Chief Marketing Officer at By Light, architects the brand positioning and market outreach strategies for the firm. Overseeing the communication of technical capabilities to the DoD and civilian sectors, the Chief Marketing Officer ensures that the company value proposition resonates with key government stakeholders. This leadership role involves managing public relations, industry partnerships, and the promotion of specialized systems engineering services. By aligning marketing initiatives with the evolving needs of federal clients, Diane Hockenberry directly impacts the growth of the business pipeline. Hockenberry drives engagement through targeted campaigns that highlight the unique expertise of the engineering team. Through strategic market analysis, the Chief Marketing Officer identifies emerging opportunities for expansion, ensuring that By Light maintains a strong presence as a premier provider of secure network solutions across the North American federal landscape.
    Diane Hockenberry

    Stuart Armstrong - Chief Technology Officer

    Stuart Armstrong, the Chief Technology Officer at By Light, directs the overarching technical vision and engineering standards for the organization. Overseeing the development of complex network architectures, the Chief Technology Officer ensures that all systems meet the stringent requirements of classified and unclassified government environments. This leadership role involves guiding the engineering team through the design and implementation of scalable infrastructure solutions. By fostering a culture of technical excellence, Stuart Armstrong directly impacts the quality and reliability of the services provided to federal clients. Armstrong evaluates emerging technologies to maintain the company's position at the forefront of the industry. Through rigorous technical oversight, the Chief Technology Officer coordinates with other C-suite leaders to align engineering capabilities with broader corporate objectives, ensuring that By Light delivers superior performance in every mission-critical project undertaken.

    Robert Milchenski - Chief Technology Officer, High Fidelity Solutions

    Robert Milchenski, the Chief Technology Officer, High Fidelity Solutions at By Light, directs the specialized development of high-fidelity simulation and modeling technologies. Overseeing the technical roadmap for advanced fidelity solutions, the Chief Technology Officer, High Fidelity Solutions ensures that these tools provide the precision required for complex government network testing. This leadership role involves integrating high-fidelity capabilities into the broader systems engineering portfolio. By advancing the state of simulation technology, Robert Milchenski directly impacts the accuracy and reliability of the network designs delivered to clients. Milchenski collaborates with engineering teams to refine technical specifications and performance standards. Through focused innovation in high-fidelity environments, the Chief Technology Officer, High Fidelity Solutions drives the company's ability to solve intricate technical challenges, ensuring that By Light remains a leader in providing sophisticated, high-performance solutions for the most demanding federal network requirements.

    Billy Smith - Chief Technology Officer, Cyberspace Operations

    Billy Smith, the Chief Technology Officer, Cyberspace Operations at By Light, directs the strategic development of cybersecurity and defensive network capabilities. Overseeing the protection of critical government infrastructure, the Chief Technology Officer, Cyberspace Operations ensures that all systems are hardened against evolving digital threats. This leadership role involves architecting secure network environments and implementing advanced defensive protocols for classified and unclassified operations. By prioritizing cyber resilience, Billy Smith directly impacts the security posture of the company's federal clients. Smith leads the technical response to complex cyberspace challenges, ensuring that all engineering solutions incorporate robust security measures. Through continuous monitoring and innovation in cyber defense, the Chief Technology Officer, Cyberspace Operations maintains the integrity of the networks managed by By Light, providing essential protection for the nation's most sensitive information systems.

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    Frequently Asked Questions Regarding By Light Top Executives and Leadership Team

    Who leads By Light?
    By Light is led by Kylie Allen (Chief Financial Officer), along with executives such as Mike Bowser (Chief Operating Officer) and Brian Donahue (President).
    Who is part of By Light’s executive team?
    The executive team of By Light includes leaders such as Kylie Allen (Chief Financial Officer), Mike Bowser (Chief Operating Officer), Brian Donahue (President) and other senior executives.
    How many executives does By Light have?
    By Light has 7 executives leading key business areas.
    What roles are included in By Light’s leadership team?
    The leadership team of By Light includes roles such as Chief Financial Officer, Chief Operating Officer, President, Chief Marketing Officer, Chief Technology Officer.