bluebird bio
bluebird bio is a biotechnology company based in Somerville, Massachusetts, specializing in gene therapies for severe genetic disorders and cancers. Founded in 1992 as Genetix Pharmaceuticals, the company rebranded in 2010 and has since grown to over 800 employees worldwide. bluebird bio is committed to developing one-time gene therapies that provide long-term solutions for patients with limited treatment options. The company’s key offerings include Lentiglobin™, a therapy for beta-thalassemia and sickle cell disease, and CAR T-cell therapies for various cancers, including multiple myeloma. bluebird bio employs lentiviral vector-based gene delivery to insert functional genes into patients' hematopoietic stem cells, aiming for durable therapeutic effects. Their investigational therapies also target conditions like cerebral adrenoleukodystrophy (CALD). bluebird bio collaborates with academic institutions, healthcare providers, and regulatory bodies to enhance patient access to its innovative therapies, which are designed as single-dose treatments to reduce the treatment burden. The company continues to focus on advancing its pipeline and ensuring global accessibility to its gene therapies.
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Headcount trend
bluebird bio went from 417 employees in Jul 2023 to 315 in Jun 2025. Last 6 months: 17 people joined, 59 left.
Org structure
Headcount by department
Salaries at bluebird bio
All salaries9 salary profiles in the US
H-1B sponsorship
The department split adds up all the years listed above. FY2025 alone: 4 filings.
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bluebird bio FAQ
How many employees does bluebird bio have?
bluebird bio has about 315 employees, down 3.1% over the last 3 months (as of Jun 2025).
Does bluebird bio sponsor H1B visas?
Yes. bluebird bio filed 4 H1B (LCA) applications in FY2025, according to the latest U.S. Department of Labor disclosures. Most of them were for Engineering roles.
What is bluebird bio's revenue per employee?
bluebird bio makes about $330K in revenue per employee, based on $103.95M annual revenue and 315 employees.
How much does bluebird bio pay?
6figr has 9 salary profiles for bluebird bio in the US, with pay broken down by role, level, gender and ethnicity on the bluebird bio salaries page. See bluebird bio salaries
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles. Updated 21 Oct 2026.