This is just an attempt to make the English sound more natural without any comments on the content:
Senior R&D Executive | Seeking a New Challenge | Available on Jan 1, 2018
Senior R&D manager with comprehensive knowledge and rich experience of managing and directing innovative multidisciplinary technological projects. Over 10 years of experience in managing managers (*) in various technological fields, aiming to deliver products with challenging technical requirements to highly demanding schedules.
Seeking an executive management position at a leading technology organization as a VP R&D or similar, which would enable me to combine my passion for designing innovative multidisciplinary products (HW, SW and more) with my aspiration to take on a challenging senior leadership role.
(*) "managing managers" is ok and people do use that phrase sometimes but repeating the first two syllables in consecutive words sounds a bit awkward to me. You could replace "managers" with "senior staff" or "senior executives" (whichever seems more appropriate to you) or alternatively, replace "managing" with "supervising". However, "supervising" might imply that the people working for you were more junior staff (below managerial level), so it's probably safer to change "managers" instead.
I hope that helps and good luck finding a new position.