Five O'Clock Club Provides many resources for job seekers How to Handle Consulting, Freelance, Temporary or Non-Paid Work on Your Resume By Kate Wendleton, Five O'Clock Club Founder Work is work.
Experience is experience.
If you are performing work for a certain company but are being paid through an intermediary company, such as a temporary services firm, do not put the name of the intermediary firm on your resume unless it is in your best interest to do so. Companies make arrangements with intermediary firms for their own reasons, and those negotiations should not affect the way you position yourself on your resume. The project is expected to last for four years. She reports to people at IBM, works with people there and even manages IBMers. IBM is where she works.