We found 23,031 companies that use Apache Solr. 5,231 of them name it in their own job posts, and the rest through employees' public profiles. Its share of job posts is shrinking, though 4,391 job posts still named it from October 2025 to August 2026. Software Engineer is the role that names it most often.
Which companies name Apache Solr in the most job posts?
The five companies with the most job posts naming Apache Solr are Apple, Walmart, Amazon, EPAM Systems and Steampunk, Inc. Of the five companies in the table, Amazon has the most employees who list it on their profiles: 407.
CompanyPostsPeopleRecent job post
AppleScientific and Technical Services · first seen Jul 2022771373
"Design and implement search and retrieval APIs for digital assets, leveraging Solr/Elasticsearch for fast, relevant asset discovery."software engineer - digital asset management, Nov 4, 2026
WalmartRetail Trade · first seen Jul 2022429209
"…with semantic and hybrid search engines such as Vespa, Elasticsearch, OpenSearch, or Solr, including tensor ranking, multi-phase ranking, and combining lexical (BM25) with dense vector retrieval."Distinguished, Software Engineer, Oct 1, 2026
AmazonRetail Trade · first seen Jul 2022303407
"You will work on Big Data technologies such as AWS, Spark, Hive, Lucene/SOLR, Elastic search etc."sr sde, amazon india ads, Aug 28, 2025
EPAM SystemsProfessional Services · first seen Aug 2022298252
"Exposure to search platforms (Solr or similar), caching solutions (Redis or similar), and CMS-driven storefronts (Optimizely or similar) working alongside a commerce engine"Solution Architecture - HCL Commerce, Oct 21, 2026
Steampunk, Inc.Professional Services · first seen Aug 20222691
"Search tools: Solr, Lucene, Elasticsearch"data engineer, Nov 4, 2026
Apache Solr turned up in a shrinking share of job posts: 2.0 in every 10,000 job posts from June to August 2026, compared with 2.4 from March to May. July 2026 was its lowest month since October 2025, at 1.8.
Show the data
Month
Job posts naming Apache Solr
All job posts
Per 10,000
Oct 2025
304
1,413,673
2.2
Nov 2025
446
1,822,119
2.4
Dec 2025
302
1,236,103
2.4
Jan 2026
495
1,828,002
2.7
Feb 2026
476
1,856,647
2.6
Mar 2026
474
1,850,711
2.6
Apr 2026
359
1,728,886
2.1
May 2026
439
1,821,509
2.4
Jun 2026
376
1,909,496
2.0
Jul 2026
331
1,815,180
1.8
Aug 2026
389
1,835,698
2.1
How many companies named Apache Solr in a job post for the first time in recent months?
142 companies named Apache Solr in a job post for the first time from June to August 2026, against 132 from March to May. From October 2025 to August 2026, 462 companies named it in a job post for the first time.
March to May 2026132
June to August 2026142
October 2025 to August 2026462
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 Apache Solr?
5,231 companies name Apache Solr in job posts they wrote; employees' profiles add 17,800 more. 1,853 show up in both job posts and employees' profiles.
How we knowCompaniesShare
Job posts name Apache Solr
5,23123%
Employees' profiles list Apache Solr
17,80077%
23,031 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use Apache Solr?
The largest group of Apache Solr users is companies with 50 to 999 employees (44%), more than on the typical tech page. The second-largest group is companies with fewer than 50 employees, at 31%.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
31%22%
50 to 999
44%38%
1,000 to 5,000
14%17%
Over 5,000
10%23%
Where are Apache Solr companies based?
The United States alone has 38% of Apache Solr companies; the rest are spread across 133 other countries and territories.
ShareTypical
United States
38%43%
India
7.1%6.9%
United Kingdom
6%6.4%
Germany
5.8%4.4%
France
5.2%4.6%
Canada
3%3.6%
Companies in 134 countries and territories. Shares are of companies with a known headquarters country.
Show the data
Country
Companies
Share
Typical tech page
United States
8,290
38%
43%
India
1,551
7.1%
6.9%
United Kingdom
1,315
6%
6.4%
Germany
1,269
5.8%
4.4%
France
1,128
5.2%
4.6%
Canada
665
3%
3.6%
Which teams work with Apache Solr?
Apache Solr turns up most in job posts for search, engineering and IT teams. Next are technology and search platform teams, at 43 and 29 companies.
TeamCompanies
Search
63
Engineering
61
IT
52
Technology
43
Search platform
29
Data engineering
26
What else do Apache Solr companies use?
Apache Lucene and GCP BigTable are the tools most closely tied to Apache Solr. Apache HBase comes third, 12 times as common as usual, at 13%.
Share of the 3,421 Apache Solr companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming Apache Solr in job posts recently?
From April to August 2026, 144 companies with 50 or more employees posted their first job naming Apache Solr: 80 commercial, 33 mid-market and 31 enterprise. KYOCERA Document Solutions France leads the new commercial companies, with 7 job posts from April to August.
Companies that named Apache Solr 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 Apache Solr most?
Software Engineer roles make up 42% of the job posts that name Apache Solr. Software Engineer posts naming it numbered 506 from March to May 2026 and 400 from June to August.
RoleSharePosts
Software Engineer
42%1,857
Data Engineer
5.9%261
AI Engineer
3.5%152
Site Reliability Engineer
2.6%112
DevOps Engineer
2.3%103
Digital Marketing
2.3%99
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Software Engineer
42%
1,857
506
400
Data Engineer
5.9%
261
88
46
AI Engineer
3.5%
152
51
41
Site Reliability Engineer
2.6%
112
36
23
DevOps Engineer
2.3%
103
35
27
Digital Marketing
2.3%
99
23
34
Which project themes come up in Apache Solr job posts?
Apart from broad digital transformation work, Data Infrastructure Migration comes up most in job posts naming Apache Solr, in 944 of them. Broad digital transformation work shows up in 2,642 of its job posts.
Project themeJob posts
Digital Transformation2,642
Data Infrastructure Migration944
Microservices Migration937
Generative AI448
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.
