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About Us

Baryonyx Management Consulting, Inc. is a premier management consulting firm that provides management consulting and data analytics services to a wide range of public and private sector clients. Our company has been in business for over 16 years, and we have established ourselves as a trusted partner for organizations looking to assess, quantify, and optimize their operational and management problems.

Our team of experts includes professionals with extensive experience in quantitative research and analysis, machine learning, strategic planning, organizational performance management, forecasting, modeling, research and development consulting, and metric development. We have a proven track record of guiding organizations in using data to gain business intelligence and maximize operational performance. Our approach is collaborative, and we work closely with clients to design and implement effective solutions that solve workforce and workload problems.

At Baryonyx, we are passionate about attention to detail. Our extreme commitment to detail is a hallmark of our company culture and is evident in the high-quality work we deliver to our clients. We have earned extensive praise from our clients for our ability to consistently produce results that exceed their expectations.

We have developed and performed hundreds of analytical and research projects, tools, and models across a wide range of federal agencies. Our team has led strategic planning efforts, actively gathering feedback from stakeholders, facilitating conversations and sessions with leadership, and developing cohesive, well-articulated plans. We have created performance measures to track progress towards strategic goals, enabling organizations to achieve their desired outcomes.

Our expertise also extends to workforce modeling, where we have designed, built, and implemented hundreds of models for dozens of agencies, including nearly every single component within DHS. Our team is skilled in measuring processes, assessing performance, and modeling workload and workforce requirements in both operational and management-intensive organizations.

Baryonyx was also responsible for managing innovation, technology strategy, and cross-departmental data sharing policies for HHS. As part of our work, we leveraged cloud platforms to create HHS Connect, which enabled users to extract, analyze, and visualize data. This resulted in increased efficiency, transparency, and enhanced analytical capacity for the organization.

In addition to our core competencies, we offer a wide range of services that include change management efforts, operational/corporate performance management, data analytics, modeling, optimization, and simulation, data governance, data management, data modeling, and database administration. We specialize in customized cloud solutions and deployments for data sharing and centralization of services.

As an SBA certified small disadvantaged business, we are committed to creating innovative and effective solutions for our public and private sector clients. Our team of experts brings a wealth of knowledge and experience to every engagement, and we are dedicated to helping organizations achieve their goals through data-driven insights and solutions.

Our Executive Team

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Sebastien Sigwalt
President and Chief Executive Officer
  • LinkedIn - White Circle

As the President and CEO of Baryonyx Management Consulting, Sebastien Sigwalt is a seasoned leader with a proven track record of success in the management consulting industry. He is responsible for overseeing the overall operations and strategy of the firm, ensuring that teams are properly composed, managed, and directed to deliver exceptional results for our clients.


With extensive experience providing on-site expertise in various client engagements in both the public and private sector, Sebastien specializes in operations and performance management consulting, data analytics, and workforce modeling. He brings a unique perspective to each engagement, leveraging his expertise to help our clients identify and implement innovative solutions that drive measurable improvements in their operations.


Prior to joining Baryonyx, Sebastien served as a Technical Director for ManTech International Corporation, where he was responsible for managing complex projects and delivering exceptional results for clients. He is a former member of the United States Army Reserve and holds BA, MBA, and Juris Doctor degrees from George Mason University.


As the leader of Baryonyx, Sebastien is committed to providing our clients with the highest level of service and expertise. He works closely with our teams to ensure that we are delivering innovative, effective solutions that meet the unique needs of each client.

Spencer Nettleton
Vice President and 
Chief Data Officer
  • LinkedIn - White Circle

As the Vice President and Chief Data Officer at Baryonyx Management Consulting, Spencer Nettleton leads the company's data science and data analytics strategies, ensuring that our team members are equipped with the best tools, methods, and technologies to deliver effective solutions to our clients.

With years of experience in both public and private sector consulting, Spencer specializes in leveraging data to drive business intelligence and operational performance. Prior to joining Baryonyx, Spencer held leadership positions at IBM and Ford Motor Company. He holds BS and MS degrees in Industrial Engineering and Operations Research from the Georgia Institute of Technology.

Contract Vehicles

  • GSA Multiple Award Schedule (MAS) # GS-00F- 234GA, SIN 54151S & 541611

  • SBA Certified Small Disadvantaged Business 

  • Partnered with prime contractors on various acquisition vehicles including DH Strategic Sourcing Vehicles, OASIS and others

  • NAICS Codes 541511, 541512, 541519, 541611, 541612, 541614, 541618, 541720, and 541990

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