The role spans public affairs, crisis management and internal communiactions, overseeing 60 staff. Ten are located at the firm’s UK headquarters in Bracknell, and a further 50 around the country.
Reporting to Siemens UK chief executive Alan Wood and sitting on the executive management board, the appointee will chair UK best practice meetings, monitor parliament and media-train senior executives.
The role also covers publications and the intranet for 18,000 staff, as well as including attending evening customer events.
Tennyson, who joined the firm in 1999 as director of corporate communications, is to leave in July.
She will join US food giant Kraft as director of corporate affairs for Europe in September, replacing incumbent Richard Johnson.
Siemens is a diverse company, with products ranging from mobile phones to washing machines. The 26 ‘decentralised’ businesses operate autonomously.
Head of PA Claire Jarvis will be acting director of corporate comms while a replacement is being sought.