I have invested in my professional development with courses and certifications.
'Certificazioni' = cher-ti-fi-ca-TSYO-ni; stress on the penultimate syllable.
Use when you have obtained new qualifications, certifications, or completed training that directly increases your value to the company.
Italian employers increasingly value continuous learning ('formazione continua'). If you have obtained relevant certifications or completed specialised courses, this strengthens your case by showing that your skills — and therefore your market value — have grown.
Ho ottenuto la certificazione [nome] a mie spese.
I obtained the [name] certification at my own expense.
Self-funded training is a particularly strong point
Le competenze acquisite mi rendono più produttivo/a per l'azienda.
The skills acquired make me more productive for the company.
Links personal development to company benefit
Ho completato un master in [campo] mentre lavoravo qui.
I completed a master's in [field] while working here.
Study while working is greatly respected in Italy
In Italy, many professional certifications and master's programmes are subsidised through 'fondi interprofessionali' — joint employer-union training funds. Ask your HR department if your company participates: training may be available at no cost to you.