# Companies using Cisco IOS

3,803 companies name Cisco IOS in their own job posts. Its share of job posts held steady in the three months to August 2026; 2,792 job posts named it from October 2025 to August 2026. IT teams are its most common home.

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

## Which companies name Cisco IOS in the most job posts?

Amazon Web Services (AWS), Amazon and General Dynamics Information Technology are among the companies with the most job posts naming Cisco IOS. 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) | 982 | 1,071 | "Knowledge of major Command Line Protocols (Cisco IOS, JunOS, GNU/Linux) and common Networking Protocols (BGP, OSPF)" (Network Deployment Technician, DCC Communities, Nov 7, 2026) |
| [Amazon](https://sumble.com/orgs/amazon) | 770 | 477 | "4+ years of Windows/Server administration, Linux administration, or Cisco IOS (CLI)" (Senior Network & Systems Engineer- Lead - Saudi Nationals, OTS, Nov 6, 2026) |
| [General Dynamics Information Technology](https://sumble.com/orgs/general-dynamics-information-technology) | 453 | 262 | "Cisco IOS, Internet Protocol Security (IPsec), Linux, Network Monitoring Tools, Routing and Switching" (Senior Network Engineer, Oct 24, 2026) |
| [Leidos](https://sumble.com/orgs/leidos) | 435 | 264 | "Experience with Cisco IOS XR, JUNOS, and Cisco IOS codes." (Senior Network Software Engineer, Oct 24, 2026) |
| [Aventiv Technologies](https://sumble.com/orgs/aventiv-technologies) | 264 | 3 | "Experience working with Windows OS, VOIP, Adtran Fortinet, AOS, Cisco IOS and wireless technology" (Field Service Technician II CA, Nov 4, 2026) |

## Is hiring for Cisco IOS growing?

Cisco IOS holds a steady place in hiring. 1.5 in every 10,000 job posts named it from June to August 2026, against 1.4 from March to May. Its busiest month was February 2026, at 1.7.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 219 | 1,413,673 | 1.5 |
| Nov 2025 | 272 | 1,822,119 | 1.5 |
| Dec 2025 | 171 | 1,236,103 | 1.4 |
| Jan 2026 | 242 | 1,828,002 | 1.3 |
| Feb 2026 | 319 | 1,856,647 | 1.7 |
| Mar 2026 | 277 | 1,850,711 | 1.5 |
| Apr 2026 | 234 | 1,728,886 | 1.4 |
| May 2026 | 248 | 1,821,509 | 1.4 |
| Jun 2026 | 253 | 1,909,496 | 1.3 |
| Jul 2026 | 297 | 1,815,180 | 1.6 |
| Aug 2026 | 260 | 1,835,698 | 1.4 |

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

From June to August 2026, 82 companies posted their first job naming Cisco IOS; 94 did from March to May. Over the 11 months from October 2025, 337 companies posted their first job naming it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 94 |
| June to August 2026 | 82 |
| October 2025 to August 2026 | 337 |

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 Cisco IOS?

3,803 companies name Cisco IOS in job posts they wrote; employees' profiles add 52,019 more. 1,889 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Cisco IOS | 3,803 | 6.8% |
| Employees' profiles list Cisco IOS | 52,019 | 93% |

## What size are the companies that use Cisco IOS?

Companies with 50 to 999 employees are the largest group of Cisco IOS users, at 42%. 575 of its companies have more than 5,000 employees. These counts cover the 3,803 companies whose job posts name it.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 25% | 26% |
| 50 to 999 | 42% | 37% |
| 1,000 to 5,000 | 18% | 15% |
| Over 5,000 | 15% | 22% |

## Where are Cisco IOS companies based?

Cisco IOS is concentrated in the United States, home to 70% of the companies that use it. Canada is second, at 4%. These shares cover the 3,803 companies whose job posts name it.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 2,422 | 70% | 48% |
| Canada | 141 | 4% | 3.8% |
| United Kingdom | 128 | 3.7% | 6.3% |
| India | 107 | 3.1% | 7.5% |
| France | 80 | 2.3% | 5% |
| Germany | 70 | 2% | 4.4% |

## Which teams work with Cisco IOS?

At 172 companies, the team named in Cisco IOS job posts is IT, at least twice the next. Next come network engineering teams (80 companies) and network teams (41).

| Team | Companies |
|---|---:|
| IT | 172 |
| Network engineering | 80 |
| Network | 41 |
| Infrastructure | 34 |
| NOC | 29 |
| Network operations | 28 |

## Which roles mention Cisco IOS most?

Network Engineer is the most common role, in 27% of job posts naming Cisco IOS. The top four roles cover 51% of these job posts.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Network Engineer | 27% | 754 | 196 | 182 |
| Network Administrator | 8.3% | 232 | 64 | 66 |
| Skilled Trades | 8.1% | 226 | 51 | 58 |
| IT Support | 8% | 222 | 51 | 69 |
| Network Operations Engineer | 4.4% | 123 | 26 | 44 |
| DevOps Engineer | 4.1% | 115 | 29 | 41 |

## Which companies started naming Cisco IOS in job posts recently?

From April to August 2026, 109 companies with 50 or more employees posted their first job naming Cisco IOS: 69 commercial, 22 mid-market and 18 enterprise. KPMG Philippines has the most job posts of the new mid-market companies, 10 from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [CommIT Enterprises, Inc.](https://sumble.com/orgs/commit-enterprises) | 7 |
| Commercial | [AVASO Technology Solutions](https://sumble.com/orgs/avaso-technology-solutions) | 4 |
| Commercial | [Proximus Luxembourg](https://sumble.com/orgs/proximus-luxembourg) | 4 |
| Commercial | [Resolve Tech Solutions](https://sumble.com/orgs/resolve-tech-solutions) | 3 |
| Commercial | [A&O IT Group](https://sumble.com/orgs/a&o-it-group) | 3 |
| Mid-market | [KPMG Philippines](https://sumble.com/orgs/kpmgphilippines) | 10 |
| Mid-market | [CareSource](https://sumble.com/orgs/caresource) | 3 |
| Mid-market | [Lintasarta](https://sumble.com/orgs/lintasarta) | 2 |
| Mid-market | [Asante](https://sumble.com/orgs/asante) | 2 |
| Mid-market | [G4F](https://sumble.com/orgs/g4f) | 1 |
| Enterprise | [KPMG](https://sumble.com/orgs/삼정회계법인) | 8 |
| Enterprise | [Orange Business](https://sumble.com/orgs/orange-business) | 3 |
| Enterprise | [Persistent Systems](https://sumble.com/orgs/persistent-systems) | 2 |
| Enterprise | [DBS Bank](https://sumble.com/orgs/dbs-bank) | 2 |
| Enterprise | [SkyWest Airlines](https://sumble.com/orgs/skywest-airlines) | 2 |

Companies that named Cisco IOS 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 Cisco IOS companies use?

Cisco IOS companies are 41 times as likely as similar companies to use JUNOS: 12% of them, against 0.3%. Cisco IOS-XR is 37 times as common as usual, at 5.2%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| JUNOS | 320 | 12% | 0.3% | 41 times |
| Cisco IOS-XR | 136 | 5.2% | 0.14% | 37 times |
| NX-OS | 473 | 18% | 0.5% | 36 times |
| Cisco IOS-XE | 242 | 9.3% | 0.29% | 33 times |
| Cameo | 148 | 5.7% | 0.29% | 19 times |
| DMVPN | 207 | 8% | 0.5% | 16 times |
| Trellix | 304 | 12% | 0.76% | 15 times |
| Cisco Prime | 181 | 7% | 0.5% | 14 times |

Shares are out of the 2,599 companies whose job posts name Cisco IOS, not counting firms whose job posts name almost every technology.

## Which project themes come up in Cisco IOS job posts?

Setting aside broad digital transformation, Security Infrastructure Modernization is the theme teams hiring for Cisco IOS mention most, in 65 job posts. Cloud Migration is next, in 52 job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 1,244 |
| Security Infrastructure Modernization | 65 |
| Cloud Migration | 52 |
| Cloud Cost Optimization | 34 |

## 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.