By Tony Kindelspire, For the Reporter-Herald--A little more than a month after 650 local Maxtor employees were told they would lose their jobs as a result of the company’s purchase by Seagate Technology Corp., city officials received better economic news Monday. Amgen plans to bring “hundreds” of jobs to Longmont, as the biotech company shifts employees to take some of the strain off its crowded Thousand Oaks, Calif., headquarters.