# Companies using Apache Solr

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.

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

## 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.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Apple](https://sumble.com/orgs/apple) | 771 | 373 | "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) |
| [Walmart](https://sumble.com/orgs/walmart) | 429 | 209 | "…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) |
| [Amazon](https://sumble.com/orgs/amazon) | 303 | 407 | "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 Systems](https://sumble.com/orgs/epam-systems) | 298 | 252 | "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.](https://sumble.com/orgs/steampunk-1) | 269 | 1 | "Search tools: Solr, Lucene, Elasticsearch" (data engineer, Nov 4, 2026) |

## Is hiring for Apache Solr growing?

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.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| 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.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 132 |
| June to August 2026 | 142 |
| October 2025 to August 2026 | 462 |

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 know | Companies | Share |
|---|---:|---:|
| Job posts name Apache Solr | 5,231 | 23% |
| Employees' profiles list Apache Solr | 17,800 | 77% |

## 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%.

| Size | Share | Typical tech page |
|---|---:|---:|
| 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.

| 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.

| Team | Companies |
|---|---:|
| Search | 63 |
| Engineering | 61 |
| IT | 52 |
| Technology | 43 |
| Search platform | 29 |
| Data engineering | 26 |

## 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.

| 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 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.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [KYOCERA Document Solutions France](https://sumble.com/orgs/kyocera-document-solutions-france) | 7 |
| Commercial | [Billtrust](https://sumble.com/orgs/billtrust) | 6 |
| Commercial | [ZettaMine Labs Pvt. Ltd.](https://sumble.com/orgs/zettamine-labs) | 4 |
| Commercial | [Dodge Construction Network](https://sumble.com/orgs/dodge-construction-network) | 3 |
| Commercial | [INRS France](https://sumble.com/orgs/inrs-france) | 3 |
| Mid-market | [Mecalux](https://sumble.com/orgs/mecalux) | 5 |
| Mid-market | [SACEM](https://sumble.com/orgs/sacem) | 5 |
| Mid-market | [Abacus](https://sumble.com/orgs/abacus-global) | 4 |
| Mid-market | [Marlabs](https://sumble.com/orgs/marlabs) | 3 |
| Mid-market | [imec](https://sumble.com/orgs/imec) | 2 |
| Enterprise | [University of Melbourne](https://sumble.com/orgs/university-of-melbourne) | 4 |
| Enterprise | [CitiusTech](https://sumble.com/orgs/citiustech) | 4 |
| Enterprise | [Ingram Micro](https://sumble.com/orgs/ingram-micro) | 3 |
| Enterprise | [Solventum](https://sumble.com/orgs/solventumhealth) | 3 |
| Enterprise | [Bristol Myers Squibb](https://sumble.com/orgs/bristol-myers-squibb) | 2 |

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.

## 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%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Apache Lucene | 624 | 18% | 0.42% | 43 times |
| GCP BigTable | 177 | 5.2% | 0.39% | 13 times |
| Apache HBase | 457 | 13% | 1.1% | 12 times |
| MapReduce | 254 | 7.4% | 0.62% | 12 times |
| Couchbase | 210 | 6.1% | 0.53% | 12 times |
| HDFS | 438 | 13% | 1.1% | 12 times |
| Apache Ant | 380 | 11% | 0.99% | 11 times |
| AWS OpenSearch | 688 | 20% | 1.8% | 11 times |

Shares are out of the 3,421 companies whose job posts name Apache Solr, not counting firms whose job posts name almost every technology.

## 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 theme | Job posts |
|---|---:|
| Digital Transformation | 2,642 |
| Data Infrastructure Migration | 944 |
| Microservices Migration | 937 |
| Generative AI | 448 |

## 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.