Nicole O’Dell

Nicole O’Dell is a seasoned HR executive with 15+ years of experience scaling HR operations and enhancing the employee experience in a fast-paced, mission-driven environment.

Nicole joined Sigma Defense in May 2021 as Human Resources Manager, was promoted to Director of Human Resources in April 2022 and the Vice President of Human Resources in July 2025.  During her tenure at Sigma Defense, she has expanded her role and grown the team to encompass People Operations, Talent Acquisition, Learning & Talent Development, and Benefits to address the company’s rapid growth while aligning with the company’s strategic goals.

Before joining Sigma Defense, Nicole O’Dell led the development of full-service HR infrastructures across multiple organizations, focusing on scalable solutions that enhance both employee experience and organizational growth. Driven by a passion for employee engagement and customer service, she has designed impactful programs that foster a positive workplace culture. Nicole also brings deep expertise in employee benefits, honed during her time at Blue Cross Blue Shield, where she developed a strong foundation in creating competitive, sustainable benefits strategies—expertise she now applies at Sigma Defense.

Driven by a deep personal connection to the military—both of Nicole’s parents served in the Army—her passion and purpose center on supporting the warfighter and helping veterans. This commitment shapes her approach to HR, where she creates an environment that values service, resilience, and continuous growth. Nicole resides in Georgia with her husband, and their two children. You’ll often find her near a baseball or football field, passionately cheering them on at games.