I have below questions about recommendation letters I am planning to include and the dilemma I think if someone can guide me.
Letter (1): From a reputed machine learning trainer working in a Big tech company. He sent me recommendation letter as he liked my open-source work.
** + Challenge:** He sent me this as an email and not on company letterhead document, from his official email address which has his phone number at the end. He addressed this email to TechNation UK. Second challenge is that he knows me through my open-source work and not by working directly as colleagues. Will this work?
Letter (2): From an startup founder and CEO, who is chairman of the official blockchain association in his country. He knows me through my mentoring and helping him create a sentiment analysis AI model which I did as voluntary unpaid work, while working full time in another job. I met him on an online forum for AI which I moderate and work as an admin of the group.
** + Challenge:** I didn’t work for him as an employee but as a volunteer and mentor. Will this be rejected by labeling this as freelance work? Although I didn’t get paid anything for the mentoring and AI work.
Letter (3): From a colleague I used to work with and he is working as a director AI in a UK based reputed company. He himself has been endorsed by Technation in the past.
** + Challenge:** None, I think this is one of the best letter from 3.