# Companies using Cilium

We found 1,769 companies that use Cilium. 942 of them name it in their own job posts, and the rest through employees' public profiles. Hiring for it is growing, with 1,094 job posts naming it from October 2025 to August 2026. It comes up most in Platform Engineer job posts.

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

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

The five companies with the most job posts naming Cilium are Cisco, Devoteam, ByteDance, Form3 and Mirantis. Mirantis is the newest of the five companies in the table, with its first job post naming it in July 2024.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Cisco](https://sumble.com/orgs/cisco-systems) | 135 | 18 | "Develop and review high-quality Go and eBPF code for Cilium open-source and Enterprise edition codebases" (Software Engineering Technical Leader, Nov 7, 2026) |
| [Devoteam](https://sumble.com/orgs/devoteam) | 41 | 2 | "Réseau & Sécurité : CNI (Cilium, Calico), Service Mesh (Istio), Vault (HashiCorp), OPA / Kyverno." (platform engineer kubernetes - h/f, Oct 22, 2026) |
| [ByteDance](https://sumble.com/orgs/bytedance) | 40 | 0 | "Contributions to cloud-native open-source projects (e.g., Kubernetes, Containerd, Cilium/eBPF), even at a small scale." (Software Engineer Intern (Traffic Infrastructure) - 2027 Summer, Oct 23, 2026) |
| [Form3](https://sumble.com/orgs/form3-financial-cloud) | 36 | 3 | "CockroachDB, NATS JetStream, Elasticsearch, Vault, Cilium" (Senior Software Developer (Go) - US Payments (Contract), Nov 4, 2026) |
| [Mirantis](https://sumble.com/orgs/mirantis) | 35 | 0 | "Cloud & Kubernetes Networking: Familiarity with CNI plugins (Calico, Cilium)." (Senior Software Engineer – BMaaS & Datacenter Networking, Nov 1, 2026) |

## Is hiring for Cilium growing?

Hiring for Cilium is growing. 0.72 in every 10,000 job posts named it from June to August 2026, against 0.54 from March to May. August 2026 was its highest month since October 2025, at 0.77.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 74 | 1,413,673 | 0.52 |
| Nov 2025 | 93 | 1,822,119 | 0.51 |
| Dec 2025 | 43 | 1,236,103 | 0.35 |
| Jan 2026 | 89 | 1,828,002 | 0.49 |
| Feb 2026 | 102 | 1,856,647 | 0.55 |
| Mar 2026 | 92 | 1,850,711 | 0.50 |
| Apr 2026 | 95 | 1,728,886 | 0.55 |
| May 2026 | 105 | 1,821,509 | 0.58 |
| Jun 2026 | 124 | 1,909,496 | 0.65 |
| Jul 2026 | 136 | 1,815,180 | 0.75 |
| Aug 2026 | 141 | 1,835,698 | 0.77 |

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

Cilium showed up in job posts at 114 companies for the first time from June to August 2026, and 102 in the three months before. The 114 from June to August are 12% of all 942 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 102 |
| June to August 2026 | 114 |
| October 2025 to August 2026 | 343 |

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 Cilium?

Employees' profiles add 827 companies to the 942 that name Cilium in job posts. 151 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Cilium | 942 | 53% |
| Employees' profiles list Cilium | 827 | 47% |

## What size are the companies that use Cilium?

42% of Cilium users are companies with 50 to 999 employees, the largest size group. 303 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 17% | 22% |
| 50 to 999 | 42% | 38% |
| 1,000 to 5,000 | 19% | 17% |
| Over 5,000 | 21% | 23% |

## Where are Cilium companies based?

The Netherlands is 2.3 times as common among Cilium companies as on the typical tech page, at 4.5%. The United States leads overall with 35%. India is less common than usual, at 3.9% against 6.9% on the typical tech page.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 598 | 35% | 43% |
| France | 132 | 7.8% | 4.6% |
| Germany | 120 | 7.1% | 4.4% |
| United Kingdom | 97 | 5.7% | 6.4% |
| The Netherlands | 77 | 4.5% | 2% |
| India | 67 | 3.9% | 6.9% |

## Which teams work with Cilium?

At 28 companies, the team named in Cilium job posts is platform engineering, at least twice the next. Infrastructure and DevOps teams come next, at 12 and 11 companies.

| Team | Companies |
|---|---:|
| Platform engineering | 28 |
| Infrastructure | 12 |
| DevOps | 11 |
| SRE | 8 |
| Engineering | 7 |
| Platform | 7 |

## Which roles mention Cilium most?

Site Reliability Engineer job posts naming Cilium grew the fastest among its top roles: 30 from June to August 2026, up from 17 from March to May. The top four roles cover 44% of these job posts.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Platform Engineer | 15% | 168 | 46 | 54 |
| DevOps Engineer | 11% | 118 | 29 | 42 |
| Software Engineer | 11% | 116 | 24 | 41 |
| Site Reliability Engineer | 7.6% | 83 | 17 | 30 |
| Network Engineer | 6.9% | 76 | 19 | 28 |
| DevSecOps Engineer | 3.9% | 43 | 20 | 8 |

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

Between April and August 2026, 143 companies with 50 or more employees first named Cilium in a job post, 28 of them with more than 5,000 employees. CloudFerro S.A. has the most job posts of the new commercial companies, 11 from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [CloudFerro S.A.](https://sumble.com/orgs/cloudferro) | 11 |
| Commercial | [Quantum Sky](https://sumble.com/orgs/tyto-athene) | 4 |
| Commercial | [Lynx Spa](https://sumble.com/orgs/lynx-s-p-a-) | 4 |
| Commercial | [codecentric AG](https://sumble.com/orgs/codecentric) | 4 |
| Commercial | [123inkt.nl](https://sumble.com/orgs/123inkt-nl) | 4 |
| Mid-market | [HUK-COBURG](https://sumble.com/orgs/huk-coburg-versicherungsgruppe) | 6 |
| Mid-market | [McAfee](https://sumble.com/orgs/mcafee) | 5 |
| Mid-market | [Quantiphi](https://sumble.com/orgs/quantiphi) | 4 |
| Mid-market | [Elastic](https://sumble.com/orgs/elastic) | 3 |
| Mid-market | [EnerSys](https://sumble.com/orgs/enersys) | 3 |
| Enterprise | [NTT DATA Business Solutions Nordics](https://sumble.com/orgs/ntt-data-business-solutions) | 6 |
| Enterprise | [Smiths Detection](https://sumble.com/orgs/smiths-group-1) | 4 |
| Enterprise | [Kaseya](https://sumble.com/orgs/kaseya) | 3 |
| Enterprise | [Cision](https://sumble.com/orgs/cision) | 3 |
| Enterprise | [Walmart](https://sumble.com/orgs/walmart) | 2 |

Companies that named Cilium 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 Cilium companies use?

25% of Cilium companies also use Linkerd, against 0.59% of similar companies. Mimir is 39 times as common as usual, at 9.3%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Linkerd | 145 | 25% | 0.59% | 42 times |
| Mimir | 54 | 9.3% | 0.24% | 39 times |
| Wireguard | 32 | 5.5% | 0.15% | 38 times |
| Traefik | 50 | 8.6% | 0.23% | 37 times |
| SGLang | 34 | 5.9% | 0.16% | 37 times |
| KServe | 30 | 5.2% | 0.14% | 36 times |
| Envoy | 115 | 20% | 0.59% | 34 times |
| Crossplane | 87 | 15% | 0.45% | 33 times |

Shares are out of the 580 companies whose job posts name Cilium, not counting firms whose job posts name almost every technology.

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

Beyond general digital transformation, the most common project theme in Cilium job posts is Cloud Cost Optimization (199 posts). After that comes Cloud Migration, with 82.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 476 |
| Cloud Cost Optimization | 199 |
| Cloud Migration | 82 |
| Microservices Migration | 78 |

## 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.