How many employees work at bluebird bio?

bluebird bio, Inc. has 491 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -16.8%.

Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025

About bluebird bio

bluebird bio is pursuing curative gene therapies to give patients and their families more bluebird days. With a dedicated focus on severe genetic diseases, bluebird has industry-leading programs for sickle cell disease, β-thalassemia and cerebral adrenoleukodystrophy and is advancing research to apply new technologies to these and other diseases. We custom design each of our therapies to address the underlying cause of disease and have developed in-depth and effective analytical methods to understand the safety of our lentiviral vector technologies and drive the field of gene therapy forward. Founded in 2010, bluebird has the largest and deepest ex-vivo gene therapy data set in the world—setting the standard for the industry. Today, bluebird continues to forge new paths, combining our real-world experience with a deep commitment to patient communities and a people-centric culture that attracts and grows a diverse flock of dedicated birds. Community guidelines: http://bit.ly/bbbGuidelines

As of December 2025

bluebird bio
workforce metrics

Headcount

491

Avg. Salary

$146.5k

Tenure

2.6yr

Growth Rate

-16.8%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of bluebird bio annual worldwide employee count from 2023 to 2025.

  • bluebird bio total number of employees in 2025 was 491, a 16.8% decline from 2024.
  • bluebird bio total number of employees in 2024 was 580, a 21.8% decline from 2023.
  • bluebird bio total number of employees in 2023 was 722, a 6.2% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of bluebird bio annual active job postings from 2023 to 2025.

  • bluebird bio active job postings in 2025 was 2, a 127.3% decline from 2024.
  • bluebird bio active job postings in 2024 was 9, a 110.0% decline from 2023.
  • bluebird bio active job postings in 2023 was 31, a 90.3% decline from 2022.

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Employee Sentiment

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