Rudall joins the agency from Salt, where she ran the corporate comms team and worked with clients including Syngenta, Unilever and ManpowerGroup.
Before Salt, she worked at Bell Pottinger Communications and Consolidated PR.
Rudall starts in her new role today.
Giles Fraser, co-founder of Brands2Life, said: "Her experience in employee engagement, CSR and broader thought leadership will be invaluable to our team and to clients."
Rudall said: "I am excited to join such a dynamic and innovative agency and look forward to working with the team to deliver meaningful, insightful campaigns for our clients that deliver business impact."