14,573 companies in our data use BERT, and 3,852 of them name it in job posts they wrote. Hiring for it has slowed, though 3,269 job posts still named it from October 2025 to August 2026. AI Engineer is the role that names it most often.
Apple, EY and TE Connectivity mention BERT in the most job posts. Of the five companies in the table, EY has the most employees who list it on their profiles: 120.
CompanyPostsPeopleRecent job post
AppleScientific and Technical Services · first seen Aug 2022335115
"Performing natural language processing including TF-IDF, word2vec, or BERT and recommendation systems including matrix factorization, or cosine similarity to manage text data and…"data scientist, Jun 28, 2026
EYProfessional Services · first seen Oct 2022287120
"…and implementation of Generative AI applications using both open source (Llama, BERT, Dolly etc.) and closed source (Open AI GPT models, MS Azure Cognitive Services, Google’s Palm, Cohere etc.)…"EYP-DnA-Associate Manager, Aug 25, 2026
TE ConnectivityManufacturing · first seen Aug 20221791
"Familiar with RF test machine VNA, TDR, BERT etc."staff r&d/product dvl engineer, Nov 7, 2026
EquinixScientific and Technical Services · first seen Sep 20221677
"BERT and SONET test equipment"Data Center Customer Operations III, Feb 10, 2026
CiscoScientific and Technical Services · first seen Sep 202214047
"…LLMs: Background in building and adapting large‑scale language models (e.g., T5, BERT, LLaMA, GPTs) for specialized domains including structured/unstructured logs, text, and event sequences."Principal Machine Learning Engineer, Jun 1, 2026
BERT turned up in a shrinking share of job posts: 1.3 in every 10,000 job posts from June to August 2026, compared with 1.6 from March to May. From October to December 2025 it was 2.1.
Show the data
Month
Job posts naming BERT
All job posts
Per 10,000
Oct 2025
304
1,413,673
2.2
Nov 2025
400
1,822,119
2.2
Dec 2025
217
1,236,103
1.8
Jan 2026
374
1,828,002
2.0
Feb 2026
343
1,856,647
1.8
Mar 2026
308
1,850,711
1.7
Apr 2026
275
1,728,886
1.6
May 2026
301
1,821,509
1.7
Jun 2026
274
1,909,496
1.4
Jul 2026
244
1,815,180
1.3
Aug 2026
229
1,835,698
1.2
How many companies named BERT in a job post for the first time in recent months?
In the three months to August 2026, 90 companies posted about BERT for the first time. From March to May, 121 did. From October 2025 to August 2026, 444 companies named it in a job post for the first time.
March to May 2026121
June to August 202690
October 2025 to August 2026444
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 BERT?
74% of the companies here are known from employees' profiles alone, and 26% name BERT in their own job posts. 1,080 show up in both job posts and employees' profiles.
How we knowCompaniesShare
Job posts name BERT
3,85226%
Employees' profiles list BERT
10,72174%
14,573 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use BERT?
The largest group of BERT users is companies with 50 to 999 employees (41%), more than on the typical tech page. 2,038 of its companies have more than 5,000 employees.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
28%22%
50 to 999
41%38%
1,000 to 5,000
17%17%
Over 5,000
14%23%
Where are BERT companies based?
BERT has an unusually large following in India: 12% of its companies, against 6.9% on the typical tech page. Its companies are based in 128 countries and territories.
ShareTypical
United States
42%43%
India
12%6.9%
United Kingdom
5.7%6.4%
Germany
3.8%4.4%
France
3.6%4.6%
Canada
3.5%3.6%
Companies in 128 countries and territories. Shares are of companies with a known headquarters country.
Show the data
Country
Companies
Share
Typical tech page
United States
5,757
42%
43%
India
1,719
12%
6.9%
United Kingdom
785
5.7%
6.4%
Germany
533
3.8%
4.4%
France
501
3.6%
4.6%
Canada
489
3.5%
3.6%
Which teams work with BERT?
Data science teams are the most common home for BERT, at 86 companies, followed by AI and AI/ML. Engineering and R&D teams follow, at 19 companies each.
TeamCompanies
Data science
86
AI
72
AI/ML
21
Engineering
19
R&D
19
Machine learning
14
What else do BERT companies use?
RoBERTa and spaCy are the tools most closely tied to BERT. NLTK is 32 times as common as usual, at 20%.
Share of the 2,657 BERT companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming BERT in job posts recently?
104 companies with 50 or more employees started naming BERT in job posts between April and August 2026. 18 of them have more than 5,000 employees. Another 4 were AI-native companies, which we list separately.
Companies that named BERT 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.
Which roles mention BERT most?
AI Engineer and Data Scientist roles account for 44% of the job posts that name BERT. AI Engineer posts naming it numbered 223 from March to May 2026 and 159 from June to August.
RoleSharePosts
AI Engineer
26%847
Data Scientist
18%577
Machine Learning
9.2%302
Software Engineer
6.4%208
Engineer
1.8%58
Software Development Engineer in Test
1.7%55
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
AI Engineer
26%
847
223
159
Data Scientist
18%
577
149
119
Machine Learning
9.2%
302
69
72
Software Engineer
6.4%
208
52
53
Engineer
1.8%
58
16
12
Software Development Engineer in Test
1.7%
55
16
13
Which project themes come up in BERT job posts?
4,667 job posts naming BERT describe Generative AI work. Microservices Migration also appears, in 63 job posts.
Project themeJob posts
Generative AI4,667
Digital Transformation1,082
Cloud Cost Optimization113
Microservices Migration63
"In-depth understanding of Large Language Models (LLMs) and their architectures, including transformer-based models like GPT (Generative Pre-trained Transformer) and BERT (Bidirectional Encoder Representations from Transformers)"
Saal.ai, Senior Machine Learning Engineer , Nov 4, 2026
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.
