# Companies using Xen

We found 14,814 companies that use Xen. 1,674 of them name it in their own job posts, and the rest through employees' public profiles. Its share of job posts held steady in the three months to August 2026; 1,159 job posts named it from October 2025 to August 2026. It comes up most in Software Engineer job posts.

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

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

Amazon Web Services (AWS) and Amazon have the most job posts naming Xen, with 483 and 395. Amazon Web Services (AWS) is the newest of the five companies in the table, with its first job post naming it in December 2023.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Amazon Web Services (AWS)](https://sumble.com/orgs/amazon-web-services) | 483 | 231 | "Linux server and XEN service virtualization troubleshooting" (Data Center Operations Engineer, ICN - DCO, Nov 4, 2026) |
| [Amazon](https://sumble.com/orgs/amazon) | 395 | 60 | "Experience with virtualization (Hypervisors, VMware, Xen), or experience in Linux/RHEL" (Amazon Dedicated Cloud Engineer, US ADC Security, Nov 1, 2026) |
| [AMD](https://sumble.com/orgs/amd) | 190 | 30 | "Support virtualization and compute platforms such as Xen, VMware, or comparable environments, including host health, guest dependencies, resource allocation, and recovery validation." (Infrastructure Systems Engineer, Oct 24, 2026) |
| [Oracle](https://sumble.com/orgs/oracle) | 188 | 175 | "Knowledge and experience of Xen tools/environment" (Technical Analyst 3-Support, Jan 13, 2026) |
| [Palo Alto Networks](https://sumble.com/orgs/palo-alto-networks) | 146 | 44 | "Virtualization technologies – ESX, KVM, Xen, Microsoft preferred" (technical sales manager (pre-sales systems engineer), sd-wan, Jun 30, 2026) |

## Is hiring for Xen growing?

Hiring for Xen barely changed, at 0.57 in every 10,000 job posts from June to August 2026 against 0.62 from March to May. Its busiest month was March 2026, at 0.70.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 77 | 1,413,673 | 0.54 |
| Nov 2025 | 124 | 1,822,119 | 0.68 |
| Dec 2025 | 73 | 1,236,103 | 0.59 |
| Jan 2026 | 117 | 1,828,002 | 0.64 |
| Feb 2026 | 117 | 1,856,647 | 0.63 |
| Mar 2026 | 129 | 1,850,711 | 0.70 |
| Apr 2026 | 101 | 1,728,886 | 0.58 |
| May 2026 | 103 | 1,821,509 | 0.57 |
| Jun 2026 | 109 | 1,909,496 | 0.57 |
| Jul 2026 | 91 | 1,815,180 | 0.50 |
| Aug 2026 | 118 | 1,835,698 | 0.64 |

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

From June to August 2026, 39 companies posted their first job naming Xen; 42 did from March to May. Over the 11 months from October 2025, 141 companies posted their first job naming it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 42 |
| June to August 2026 | 39 |
| October 2025 to August 2026 | 141 |

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 Xen?

Most of these companies come from employees' profiles: 89% have no job post naming Xen. 1,674 name it in their own job posts.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Xen | 1,674 | 11% |
| Employees' profiles list Xen | 13,140 | 89% |

## What size are the companies that use Xen?

Xen skews toward smaller firms. 27% of its users are companies with fewer than 50 employees, against 22% on the typical tech page. 1,825 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 27% | 22% |
| 50 to 999 | 43% | 38% |
| 1,000 to 5,000 | 18% | 17% |
| Over 5,000 | 12% | 23% |

## Where are Xen companies based?

Xen has an unusually large following in Brazil: 6.4% of its companies, against 2.8% on the typical tech page. Its companies are based in 135 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 4,539 | 32% | 43% |
| United Kingdom | 939 | 6.6% | 6.4% |
| Brazil | 907 | 6.4% | 2.8% |
| France | 726 | 5.1% | 4.6% |
| Germany | 711 | 5% | 4.4% |
| The Netherlands | 564 | 4% | 2% |

## Which teams work with Xen?

Xen work is spread across teams. IT leads, at 26 companies. Infrastructure and engineering teams come next, at 14 and 11 companies.

| Team | Companies |
|---|---:|
| IT | 26 |
| Infrastructure | 14 |
| Engineering | 11 |
| Eet | 9 |
| Operations | 9 |
| DevOps | 8 |

## Which roles mention Xen most?

Software Engineer is the most common role, in 14% of job posts naming Xen. Software Engineer posts naming it numbered 53 from March to May 2026 and 50 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Software Engineer | 14% | 164 | 53 | 50 |
| IT Support | 8% | 93 | 21 | 28 |
| Systems Engineer | 6.6% | 77 | 25 | 16 |
| Data Center Engineer | 5.2% | 60 | 17 | 31 |
| Software Development Engineer in Test | 3.3% | 38 | 11 | 6 |
| Administrator | 3.2% | 37 | 8 | 6 |

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

Between April and August 2026, Xen appeared for the first time in job posts at 42 companies: 25 commercial, 9 mid-market and 8 enterprise. Oak Grove Technologies leads the new commercial companies, with 6 job posts from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [Oak Grove Technologies](https://sumble.com/orgs/oak-grove-technologies) | 6 |
| Commercial | [Thakral One](https://sumble.com/orgs/thakral-one) | 3 |
| Commercial | [OBXtek](https://sumble.com/orgs/obxtek-inc.) | 3 |
| Commercial | [Klüh Service Management GmbH](https://sumble.com/orgs/kluh-service-management) | 2 |
| Commercial | [LeadSoC Technologies Pvt Ltd](https://sumble.com/orgs/leadsoc-technologies-india) | 2 |
| Mid-market | [eInfochips (An Arrow Company)](https://sumble.com/orgs/einfochips) | 2 |
| Mid-market | [CS GROUP](https://sumble.com/orgs/cs-group-1e03b170) | 2 |
| Mid-market | [Liebherr Aerospace and Transportation](https://sumble.com/orgs/liebherr-aerospace-and-transportation) | 2 |
| Mid-market | [UiPath](https://sumble.com/orgs/uipath) | 1 |
| Mid-market | [Alibaba Cloud](https://sumble.com/orgs/alibaba-cloud) | 1 |
| Enterprise | [KPIT](https://sumble.com/orgs/kpit-technologies) | 3 |
| Enterprise | [TP](https://sumble.com/orgs/teleperformance) | 1 |
| Enterprise | [GlobalLogic](https://sumble.com/orgs/globallogic) | 1 |
| Enterprise | [TransUnion](https://sumble.com/orgs/transunion) | 1 |
| Enterprise | [CrowdStrike](https://sumble.com/orgs/crowdstrike) | 1 |

Companies that named Xen 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 Xen companies use?

Compared with companies of the same size, Xen companies stand out for using Red Hat KVM and LXC. Oracle ZFS is 29 times as common as usual, at 5.8%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Red Hat KVM | 545 | 55% | 1.2% | 46 times |
| LXC | 68 | 6.8% | 0.19% | 35 times |
| Oracle ZFS | 58 | 5.8% | 0.2% | 29 times |
| Oracle VirtualBox | 95 | 9.5% | 0.35% | 27 times |
| Ceph | 141 | 14% | 0.55% | 26 times |
| Gerrit | 54 | 5.4% | 0.23% | 24 times |
| gdb | 96 | 9.6% | 0.43% | 22 times |
| Red Hat OpenStack | 250 | 25% | 1.1% | 22 times |

Shares are out of the 996 companies whose job posts name Xen, not counting firms whose job posts name almost every technology.

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

Setting aside broad digital transformation, Cloud Migration is the theme teams hiring for Xen mention most, in 85 job posts. Data Infrastructure Migration is next, in 61 job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 495 |
| Cloud Migration | 85 |
| Data Infrastructure Migration | 61 |
| Cloud Cost Optimization | 48 |

- "Migration from VMware to Xen experience preferred" (Information Systems Solutions, Inc., Senior Virtualization & Storage Engineer, Oct 24, 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.