Petro Staffing Group, LLC, a Dallas-based staffing firm, announced Kerri Scano as executive vice president. Scano has 18 years of staffing experience, primarily in the oil and gas marketplace. Scano was previously the owner of KS Energy Search Group, a professional oil and gas recruiting firm.

Boyden, an executive search firm, announced Lori Christiansen as managing director of the company’s San Francisco office. Christiansen was previously biotech practice leader and vice president of the biopharma practice for two retained executive search firms specializing in the life science industry.

Link Staffing Services, a Houston-based staffing provider, named Ruth McCurdy as company operations manager. McCurdy has 25 years’ experience in the staffing industry, primarily in sales and operations management. She will oversee the company-owned branch locations to ensure recruitment, productivity and profitability goals are met.

Landrum Human Resources Companies, a Pensacola, Fla.-based staffing provider, appointed Amy Wilks as a business development manager. Wilks has more than 15 years of sales experience and currently serves as a board member of the Santa Rosa County chamber of commerce in Florida. She will advise business owners in the areas of human resource administration, employee benefits, workers compensation and risk management, payroll, and tax filing compliance in Escambia, Santa Rosa, and Okaloosa counties.