Mário Augusto da Silva Oliveira started at Sonair as a technician in 1991 and then held various positions at MSTelcom, first as a Commercial Manager in 2006, then Operation Manager in 2009, Engineering Manager in 2012, and member of the […]
Mário Augusto da Silva Oliveira started at Sonair as a technician in 1991 and then held various positions at MSTelcom, first as a Commercial Manager in 2006, then Operation Manager in 2009, Engineering Manager in 2012, and member of the […]