I did this quest today with my lvl 25 sith jugg. had about 30% hp left when the boss died. Used Vette (ranged dps companion)
Make sure all your skills are set and a medpac. Enrage - jump in, smash, ravage, taunt, run.. kited until I had half hp then used Call on the force, taunted again and ran, popped medpack, boss at 30%, tanked the rest.
if you cant do this boss as a tank at lvl 28 or 30 you need to change your gameplan.