Illumina Employee Directory
Biotechnology ResearchCalifornia, United States5001-10000 Employees
Illumina has about 9.7K employees across 4 continents, most of them in North America. By country, the largest groups are United States Of America (70%), Singapore (9%) and United Kingdom Of Great Britain And Northern Ireland (6%). Biotechnology and Engineering make up 44% of the profiles with a known department. Illumina's workforce spans 41 departments. Illumina's workforce fell 6% between July 2025 and July 2026.