Description. Codexis, a biotechnology company based in Redwood City, CA, is looking to hire an. Associate Director - Environmental, Health and Safety (EHS). Codexis is a leading enzyme engineering company leveraging its proprietary CodeEvolverĀ® technology platform to discover, develop and enhance novel, high-performance enzymes and other classes of proteins. Codexis enzymes solve for real-world challenges associated with small molecule pharmaceut...