Illumina reviews

3.3

46% would recommend to a friend

(2,566 total reviews)
avatar

Jacob Thaysen

53% approve of CEO

33% positive business outlook

Illumina has an employee rating of 3.3 out of 5 stars, based on 2,566 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Illumina employee rating is in line with the average (within 1 standard deviation) for employers within the Pharmaceutical & Biotechnology industry (3.5 stars).

Reviews by job title

3K reviews
1.0
Nov 7, 2025
Recommend
CEO approval
Business Outlook

Pros

Unlimited Time off and 2 shutdowns

Cons

Where to begin ? 1) 10 rounds of layoffs in the last 3 years 2) constant reorg and changes 3) RSU taken away for AD and below 4) Ton of benefits removed 5) Stock not performing well 6) Closure of building and downsizing 7) Low Bonus

1.0
Nov 4, 2025

Chaotic culture and incompetent leadership

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Decent pay. Two annual shutdowns.

Cons

Dysfunctional leadership, incompetent middle management, unreasonable expectations. It’s a circus. The benefits have also been stripped down due to recent changes.

2.0
Oct 20, 2025

Illumina Singapore

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

MNC package relatively competive as of today Life can be easy and enjoyable as long as choose to be in the right team in favor Level of expectations for technical expertise are mostly not high

Cons

Could sometimes see things progress continually in abnormal problematic ways with unfavorable results, due to incorrect direction given, owing to gap in domain knowledge or practical experience and disconnection to reality

Viewing 106 - 108 of 2,566 Reviews

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