One possible conjugation is "has overseen," which changes the verb tense of the sentence from present to present perfect. The present perfect tense indicates that the subject both performed the verb in the past and continues to perform the verb (Sir Ive oversaw design engineering and still oversees design engineering).
Another option is to make your predicate compound (with two verbs).
Sir Jony Ive, KBE, oversaw the design engineering of the first iPhone in 2007, and continues to manage designs of Apple products to this day.
Also consider rewording the sentence to better group the objects.
Sir Jony Ive, KBE, has overseen the design engineering of every iPhone since its inception in 2007.