Dollar General has tapped a Walmart executive as its senior vice president of technology engineering. Shweta Bhatia brings more than 20 years of retail, technology and leadership experience to the discounter's IT team, including three years in international tech roles at Walmart and more than 10 in omni-channel and digital technology leadership at Kohl's, most recently as vice president of technology for product, omni-channel fulfillment and store innovation. Bhatia will lead the company's technology product engineering and technology and data engineering domains.

Among other promotions and appointments announced by Dollar General Zak Brining was promoted to senior vice president of corporate store operations. In this role, Brining will continue overseeing store operations workforce management, communication and compliance, and store process improvement while adding responsibilities in store facilities management. Donny Lau was promoted to senior vice president and chief strategy officer.

Lau most recently served as vice president, investor relations and corporate strategy. Jim Sullivan was promoted to senior vice president of store operations with responsibility for more than 8,000 locations across the northern half of the United States. Rich Szellan was promoted to senior vice president of procurement and margin improvement.