Early in his career, Cernuda worked at Software AG and Banco 21.[5] In 1997, he joined Microsoft Spain.[6][7] During his career at Microsoft, Cernuda has served as the company's vice president of sales, marketing and services for Latin America.[8] He became president of Microsoft's business in the Asia Pacific region in 2013.[9] In 2014, he received the "100 Españoles" award given to Spaniards who achieve international recognition.[10]
In June 2016, Microsoft appointed Cernuda as a corporate vice president and its president of Latin America,[8] a position in which he oversees 2,500 employees, and 80,000 business partnerships.[11] He is the first person of Spanish heritage to reach the level of corporate vice presidency in the company.[12] Cernuda stated in October 2016 that he has three goals in this role: to make technology more integrated into daily life, to boost productivity in the workplace, and to promote smarter cloud storage.[13] As part of his leadership style, he advocates for flexible work arrangements, and he does not have his own office or desk.[14] In June 2018, ESIC Business & Marketing School awarded him an Aster Award for Best Professional Career.[15]
On July 1, 2020, Cernuda joined NetApp as President [16]