Bus Éireann is to create almost 200 new jobs in Dublin and across the country.
This includes 190 new driver positions and additional mechanic jobs.
These roles will be in Dublin, Cork, Galway, Mayo, Waterford, Wicklow, Navan, Drogheda, Limerick and west Clare.
The recruitment campaign includes radio, digital and print adverts.
The firm says the jobs are to service "the ongoing expansion of the national network".
In a statement, Bus Éireann says: "The new staff positions are required for an expansion and enhancement of services on a number of Bus Éireann routes nationwide under contract to the National Transport Authority (NTA), and some additional enhancement of services on Expressway routes.
"These service enhancements are planned for regional city networks, town services and several Expressway intercity routes."