I am a senior engineer at a large well known US company, and oversaw an intern this past summer for a comp sci related internship (programming focused). He did a great job, and I was very happy with his work. Note: He’ll be going into his junior year this fall.
He asked for a letter of recommendation, and I said I’d be happy to write an endorsement on LinkedIn, but it seems he’s also hoping for a generic letter formatted recommendation. Is it normal to do these without a specific purpose in mind (eg future internship, post college career, academia)?