Leadership Team
Bridget McCaleb, Catalyst & CEO
As CEO of Sentar, Bridget McCaleb leads the company with over 30 years of leadership experience in software engineering and development, focusing on R&D in AI and cybersecurity systems. Bridget is committed to strategic leadership and hands-on collaboration with government customers and business partners to address cybersecurity needs. Her dedication to fostering strong relationships within her team and actively engaging in day-to-day operations has been instrumental driving Sentar’s growth. Bridget’s leadership ensures the company’s continued success and innovation in the cyber-intelligence sector. She holds a Master of Computer Science from the University of Alabama in Huntsville and a B.S. in Computer Science from the University of Southern Mississippi. Bridget’s passion for growth and nurturing positive connections with partners, customers, and employees continues to drive Sentar’s mission forward.
April Nadeau, Senior Vice President
Since 2008, April Nadeau has been an active participant in a variety of roles throughout the Charleston Defense Industry. A well-respected professional in both government and contractor communities, April joined Sentar in 2013 as Division Manager. She was soon promoted to Vice President in 2016. Currently leading all of Sentar’s Navy, Marine Corps and Health IT programs, April is responsible for managing multiple projects, people, and process. April is a results-oriented leader; Her passion and efficient resource management have proven successful not only for her Business Unit, but also Sentar itself. Her efforts resulted in Sentar receiving recognition as one of the Best Places to Work in South Carolina for 2016 – 2021 and Best Places to Work in San Antonio for 2020 and 2021. April’s efforts also earned Sentar FedHealthIT Innovation Awards in 2018 – 2021, as well as the ESGR Above & Beyond Award. For three consecutive years (2017 – 2019), April was named on the FedHealthIT 100 list, a prestigious award given to those driving change and advancement in the Federal Health Information Technology market. April’s multiple wins qualified her to receive the FedHealthIT100 Hall of Fame in both 2020 and 2021.
As a valued member of Sentar’s Leadership team and Board of Directors, April develops strategic initiatives to grow the company by extending its reach and reputation. These valuable tasks include opportunity identification and capture, acquiring and maintaining customer and partner relationships, and supporting proposal efforts. Aside from her executive duties at Sentar, April is active among numerous philanthropic organizations including CDCA, IWRP Consortium Executive Committee, WID, PCDC, AOC, and AFCEA. She also has experience as a Lean-In Circle Moderator for Government and Industry, mentoring individuals in a forum that serves to empower women to achieve their professional ambitions. April is a graduate of Tulane University.
Jill Malliet, Senior Vice President (Business Administration)
Stephen Pratt, Chief Information Security Officer
A driven, results-oriented industry leader, Steve Pratt has two decades of experience in Information Technology and Cybersecurity. Steve’s extensive career is reflective of his excellent adaptability and technical acumen. Steve currently serves as Sentar, Inc.’s Chief Information Security Officer (CISO) and Technical Solutions Architect, supporting security-related audits and certifications while also collaborating with industrial security professionals to align IT security best practices with Sentar’s expansive security footprint. Known for his critical decision-making under pressure and willingness to serve, Steve is expertly communicative and eager to make a positive impact in Huntsville and beyond.