# Companies using MapReduce

23,015 companies in our data use MapReduce, and 2,688 of them name it in job posts they wrote. Its share of job posts is shrinking, though 2,933 job posts still named it from October 2025 to August 2026. Data Engineer roles mention it most.

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

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

Capital One has posted more jobs naming MapReduce than any other company: 2,605. Of the five companies in the table, Apple has the most employees who list it on their profiles: 882.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Capital One](https://sumble.com/orgs/capital-one) | 2,605 | 359 | "5+ year’s experience with Distributed data, computing tools (MapReduce, Hadoop, Hive, EMR, Kafka, Spark, Gurobi, or MySQL)" (Principal Associate - Data Engineer, Oct 8, 2026) |
| [Booz Allen Hamilton](https://sumble.com/orgs/booz-allen-hamilton) | 1,112 | 44 | "2+ years of experience with distributed data or computing tools, including MapReduce, Hadoop, Hive, EMR, Kafka, Spark, Gurobi, or MySQL" (data scientist, Nov 7, 2026) |
| [EPAM Systems](https://sumble.com/orgs/epam-systems) | 344 | 195 | "Hands-on expertise in Big Data technology stacks such as Hadoop, Yarn, HDFS, MapReduce, Hive, Spark, Kafka" (Senior Director of Data Delivery, Sep 15, 2026) |
| [Apple](https://sumble.com/orgs/apple) | 330 | 882 | "Utilizing MapReduce to develop efficient large scale data pipelines." (Machine Learning Engineer, Mar 3, 2026) |
| [Visa](https://sumble.com/orgs/visa) | 315 | 265 | "Passion for Big Data and analytics in general leveraging technologies like Hadoop, Spark, Solr, MapReduce." (Lead SW Engineer - IC - Risk and Identity Solutions, May 27, 2026) |

## Is hiring for MapReduce growing?

Job posts mentioning MapReduce went from 1.7 to 1.4 in every 10,000 job posts, comparing March to May with June to August 2026. From October to December 2025 it was 1.4.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 194 | 1,413,673 | 1.4 |
| Nov 2025 | 261 | 1,822,119 | 1.4 |
| Dec 2025 | 175 | 1,236,103 | 1.4 |
| Jan 2026 | 322 | 1,828,002 | 1.8 |
| Feb 2026 | 284 | 1,856,647 | 1.5 |
| Mar 2026 | 302 | 1,850,711 | 1.6 |
| Apr 2026 | 313 | 1,728,886 | 1.8 |
| May 2026 | 281 | 1,821,509 | 1.5 |
| Jun 2026 | 286 | 1,909,496 | 1.5 |
| Jul 2026 | 247 | 1,815,180 | 1.4 |
| Aug 2026 | 268 | 1,835,698 | 1.5 |

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

In the three months to August 2026, 35 companies posted about MapReduce for the first time. From March to May, 42 did. The 35 from June to August are 1.3% of all 2,688 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 42 |
| June to August 2026 | 35 |
| October 2025 to August 2026 | 178 |

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 MapReduce?

Of the 23,015 companies here, 20,327 are known from what employees list on their profiles. 1,104 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name MapReduce | 2,688 | 12% |
| Employees' profiles list MapReduce | 20,327 | 88% |

## What size are the companies that use MapReduce?

MapReduce skews toward smaller firms. 26% of its users are companies with fewer than 50 employees, against 22% on the typical tech page. 2,771 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 26% | 22% |
| 50 to 999 | 44% | 38% |
| 1,000 to 5,000 | 18% | 17% |
| Over 5,000 | 12% | 23% |

## Where are MapReduce companies based?

47% of MapReduce companies are based in the United States, and 8.4% in India. Its companies are based in 148 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 10,231 | 47% | 43% |
| India | 1,819 | 8.4% | 6.9% |
| United Kingdom | 1,137 | 5.2% | 6.4% |
| France | 880 | 4% | 4.6% |
| Canada | 795 | 3.6% | 3.6% |
| Germany | 692 | 3.2% | 4.4% |

## Which teams work with MapReduce?

Data engineering teams are the most common home for MapReduce, at 58 companies, followed by data science and data. Engineering teams come fourth, at 20 companies.

| Team | Companies |
|---|---:|
| Data engineering | 58 |
| Data science | 47 |
| Data | 24 |
| Engineering | 20 |
| Data & analytics | 17 |
| Big data | 15 |

## Which roles mention MapReduce most?

MapReduce shows up across many roles. The top one, Data Engineer, has 28% of the job posts. Data Scientist is second, at 18%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Data Engineer | 28% | 831 | 228 | 192 |
| Data Scientist | 18% | 540 | 195 | 177 |
| Software Engineer | 12% | 349 | 117 | 91 |
| Machine Learning | 4.4% | 128 | 39 | 15 |
| Data Entry | 2.7% | 78 | 18 | 28 |
| AI Engineer | 2.4% | 69 | 19 | 28 |

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

Between April and August 2026, 36 companies with 50 or more employees first named MapReduce in a job post, 10 of them with more than 5,000 employees. Global Software Solutions Group has the most job posts of the new commercial companies, 5 from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [Global Software Solutions Group](https://sumble.com/orgs/gssgroups) | 5 |
| Commercial | [LivePerson](https://sumble.com/orgs/liveperson) | 3 |
| Commercial | [Blankfactor](https://sumble.com/orgs/blankfactor) | 3 |
| Commercial | [Lotame](https://sumble.com/orgs/lotame) | 3 |
| Commercial | [Crescent Petroleum](https://sumble.com/orgs/crescent-petroleum) | 2 |
| Mid-market | [Evalueserve](https://sumble.com/orgs/evalueserve) | 1 |
| Mid-market | [Qualys](https://sumble.com/orgs/qualys) | 1 |
| Mid-market | [HealthEdge](https://sumble.com/orgs/healthedge-software) | 1 |
| Mid-market | [Manitoba Hydro](https://sumble.com/orgs/manitoba-hydro) | 1 |
| Mid-market | [MoMo (M_Service)](https://sumble.com/orgs/m-service-momo) | 1 |
| Enterprise | [Crédit Agricole CIB](https://sumble.com/orgs/credit-agricole-cib) | 2 |
| Enterprise | [TP](https://sumble.com/orgs/teleperformance) | 1 |
| Enterprise | [Amgen](https://sumble.com/orgs/amgen) | 1 |
| Enterprise | [Shopify](https://sumble.com/orgs/shopify-incc) | 1 |
| Enterprise | [Equinix](https://sumble.com/orgs/equinix) | 1 |

Companies that named MapReduce 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 MapReduce companies use?

MapReduce companies are 52 times as likely as similar companies to use Apache Flume: 13% of them, against 0.25%. Apache Oozie comes second, 42 times as common as usual, at 13%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Apache Flume | 200 | 13% | 0.25% | 52 times |
| Apache Oozie | 198 | 13% | 0.31% | 42 times |
| HDFS | 664 | 43% | 1.2% | 35 times |
| Apache HBase | 610 | 40% | 1.2% | 34 times |
| Apache Impala | 255 | 17% | 0.7% | 24 times |
| GCP BigTable | 152 | 9.9% | 0.43% | 23 times |
| Apache Storm | 238 | 16% | 0.71% | 22 times |
| Cloudera | 353 | 23% | 1% | 22 times |

Shares are out of the 1,530 companies whose job posts name MapReduce, not counting firms whose job posts name almost every technology.

## Which project themes come up in MapReduce job posts?

3,857 job posts naming MapReduce describe broad digital transformation, and 674 describe Data Infrastructure Migration work. After that comes Cloud Migration, with 249.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 3,857 |
| Data Infrastructure Migration | 674 |
| Cloud Migration | 249 |
| Microservices Migration | 164 |

## 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.