# Companies using FreeSurfer

916 companies use FreeSurfer, based on their job posts and their employees' public profiles. 142 job posts named it from October 2025 to August 2026. Researcher roles mention it most.

Data as of November 9, 2026. Source: Sumble.

## Which companies name FreeSurfer in the most job posts?

Massachusetts General Hospital leads with 155 job posts naming FreeSurfer, followed by Washington University in St. Louis and Mass General Brigham. Three of these five companies are in Health Care and Social Assistance.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Massachusetts General Hospital](https://sumble.com/orgs/massachusetts-general-hospital) | 155 | 6 | "Processing, QC and basic analysis of structural MRI data with FreeSurfer" (Neuroimaging Clinical Research Coordinator, Aug 25, 2026) |
| [Washington University in St. Louis](https://sumble.com/orgs/washington-university-in-st-louis) | 84 | 4 | "Training will be provided to gain the ability to perform brain volumetric analysis on patients using the FreeSurfer platform through CNDA." (Clinical Research Study Assistant II - Radiology Oncology, Feb 5, 2026) |
| [Mass General Brigham](https://sumble.com/orgs/mass-general-brigham) | 61 | 2 | "…connectivity methods including programming in MATLAB and Python, and familiarity with FreeSurfer, SPM, FSL, AFNI, CONN toolbox, and Connectome Workbench." (Post-Doctoral Fellow, May 2, 2026) |
| [Stanford University](https://sumble.com/orgs/stanford-university) | 47 | 5 | "Desired experience with software packages for neuroimaging processing and statistics, such as FreeSurfer, SPM, FSL and R." (Clinical Research Coordinator Associate, Oct 11, 2026) |
| [Brigham and Women's Hospital](https://sumble.com/orgs/brigham-and-womens-hospital-bwh) | 26 | 3 | "Learn and apply neuroimaging methods to process and analyze structural, functional, and diffusion MRI data using tools such as MRtrix, FreeSurfer, and FSL." (Research Assistant II, Neurosurgery, Sep 23, 2026) |

## Is hiring for FreeSurfer growing?

0.10 in every 10,000 job posts named FreeSurfer from June to August 2026, against 0.07 from March to May. These are small numbers of job posts, so a few companies can move them.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 12 | 1,413,673 | 0.08 |
| Nov 2025 | 12 | 1,822,119 | 0.07 |
| Dec 2025 | 5 | 1,236,103 | 0.04 |
| Jan 2026 | 11 | 1,828,002 | 0.06 |
| Feb 2026 | 11 | 1,856,647 | 0.06 |
| Mar 2026 | 10 | 1,850,711 | 0.05 |
| Apr 2026 | 12 | 1,728,886 | 0.07 |
| May 2026 | 16 | 1,821,509 | 0.09 |
| Jun 2026 | 11 | 1,909,496 | 0.06 |
| Jul 2026 | 11 | 1,815,180 | 0.06 |
| Aug 2026 | 31 | 1,835,698 | 0.17 |

## How many companies named FreeSurfer in a job post for the first time in recent months?

In the three months to August 2026, 9 companies posted about FreeSurfer for the first time. From March to May, 6 did. From October 2025 to August 2026, 25 companies named it in a job post for the first time.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 6 |
| June to August 2026 | 9 |
| October 2025 to August 2026 | 25 |

Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.

## How do we know which companies use FreeSurfer?

Of the 916 companies here, 644 are known from what employees list on their profiles. 104 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name FreeSurfer | 272 | 30% |
| Employees' profiles list FreeSurfer | 644 | 70% |

## What size are the companies that use FreeSurfer?

FreeSurfer leans toward large companies. 37% of its users are companies with more than 5,000 employees, against 23% on the typical tech page. 128 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 14% | 22% |
| 50 to 999 | 28% | 38% |
| 1,000 to 5,000 | 21% | 17% |
| Over 5,000 | 37% | 23% |

## Where are FreeSurfer companies based?

More than half of FreeSurfer companies are in the United States (56%). The United Kingdom is second, at 6%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 492 | 56% | 43% |
| United Kingdom | 53 | 6% | 6.4% |
| Canada | 40 | 4.5% | 3.6% |
| Germany | 40 | 4.5% | 4.4% |
| The Netherlands | 30 | 3.4% | 2% |
| Spain | 27 | 3.1% | 1.8% |

## Which teams work with FreeSurfer?

FreeSurfer work is spread across teams. Research leads, at 5 companies.

| Team | Companies |
|---|---:|
| Research | 5 |
| Lab | 4 |
| Martinos center for biomedical imaging | 4 |
| Neuroimaging core | 4 |
| Computational neuroimaging lab | 3 |
| Disease research center (ADRC) | 3 |

## Which roles mention FreeSurfer most?

Researcher is the most common role, in 37% of job posts naming FreeSurfer. Researcher posts naming it numbered 11 from March to May 2026 and 18 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Researcher | 37% | 52 | 11 | 18 |
| Research Assistant | 13% | 19 | 6 | 6 |
| Research Scientist | 6.3% | 9 | 4 | 3 |
| Radiologic Technologist | 5.6% | 8 | 2 | 4 |
| Data Analyst | 3.5% | 5 | 3 | 1 |
| Biomedical Engineer | 2.8% | 4 | 0 | 2 |

## Which companies started naming FreeSurfer in job posts recently?

Between April and August 2026, 12 companies with 50 or more employees first named FreeSurfer in a job post, 6 of them with more than 5,000 employees.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [Pennington Biomedical Research Center](https://sumble.com/orgs/pennington-biomedical-research-center) | 1 |
| Commercial | [Hospital del Mar Research Institute](https://sumble.com/orgs/hmarresearch) | 1 |
| Commercial | [Research Foundation for Mental Hygiene, Inc.](https://sumble.com/orgs/research-foundation-for-mental-hygiene) | 1 |
| Mid-market | [Kennedy Krieger Institute](https://sumble.com/orgs/kennedy-krieger-institute) | 2 |
| Mid-market | [LMU Klinikum München](https://sumble.com/orgs/klinikum-der-universitat-munchen) | 2 |
| Mid-market | [Harvard Medical School and Massachusetts General Hospital](https://sumble.com/orgs/harvard-medical-school-massachusetts-general-hospital) | 2 |
| Enterprise | [University of Sydney](https://sumble.com/orgs/university-of-sydney) | 2 |
| Enterprise | [Max Planck Society](https://sumble.com/orgs/max-planck-gesellschaft) | 2 |
| Enterprise | [Boehringer Ingelheim](https://sumble.com/orgs/boehringer-ingelheim) | 1 |
| Enterprise | [University of South Florida](https://sumble.com/orgs/university-of-south-florida) | 1 |
| Enterprise | [Auburn University](https://sumble.com/orgs/auburn-university) | 1 |

Companies that named FreeSurfer in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.

## What else do FreeSurfer companies use?

AFNI, Simoa and MaxQuant show up far more often at FreeSurfer companies than at companies of the same size. SigmaPlot is 36 times as common as usual, at 8.8%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| AFNI | 71 | 45% | 0.38% | 118 times |
| Simoa | 14 | 8.8% | 0.1% | 84 times |
| MaxQuant | 12 | 7.5% | 0.19% | 40 times |
| SigmaPlot | 14 | 8.8% | 0.24% | 36 times |
| Mplus | 51 | 32% | 1% | 32 times |
| eRA Commons | 22 | 14% | 0.52% | 26 times |
| Luminex | 30 | 19% | 0.77% | 25 times |
| ELISpot | 22 | 14% | 0.59% | 23 times |

Shares are out of the 159 companies whose job posts name FreeSurfer, not counting firms whose job posts name almost every technology.

## About this data

Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.

Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.

Sumble has a free plan, and the same data is available through its API and MCP server.

A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.

Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.