Another phrase for extensive experience is "profound expertise." This term conveys a deep and comprehensive understanding of a particular field or subject, highlighting both the breadth and depth of knowledge gained through significant involvement and practice.
In addition
The phrase "as well as" means the same as "in addition to".
Another phrase for "Did you know" is "Are you aware." This alternative can be used to introduce interesting facts or information in a conversational manner.
Remembering.Cogitating.Sensible.Aware.
casual
Very knowledgeable, quite proficient, erudite, educated, literate, well-read...
Another phrase with the same meaning as "hold your nose" is "grin and bear it." Both expressions suggest enduring an unpleasant situation or experience, often because it is necessary or unavoidable.
extesnive work experience
"Extensive experience using Microsoft Office Products" , etc. "Advanced command of Microsoft Access", etc.
An alternative sentence
Extensive is an adjective, and use is a noun.
Another phrase for "it's been a pleasure" could be "I've enjoyed our time together." Alternatively, you might say "it's been a joy" or "I've appreciated this experience." These expressions convey a similar sentiment of enjoyment and appreciation for the interaction.
Whats another phrase or term for "security issues"?
Another phrase for facts could be information or data.
i need to know another phrase for pay attention
In addition
Not a phrase but a word. Unique.