# Companies using Customer.io

We found 2,635 companies that use Customer.io. 1,675 of them name it in their own job posts, and the rest through employees' public profiles. Hiring for it is growing, with 1,646 job posts naming it from October 2025 to August 2026. It comes up most in Lifecycle Marketing job posts.

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

## Which companies name Customer.io in the most job posts?

Saleshandy, APPLY and Columbia Road are among the companies with the most job posts naming Customer.io. Three of these five companies are in Scientific and Technical Services.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Saleshandy](https://sumble.com/orgs/saleshandy) | 59 | 0 | "Product Marketing: Mixpanel, Customer.io" (seo executive, Jan 15, 2026) |
| [APPLY](https://sumble.com/orgs/apply-digital) | 48 | 2 | "…(OneTrust), and ensure PII is handled correctly across CRM/MarTech data integrations (Customer.io, Twilio Segment)." (bi engineer (data analyst), Oct 28, 2026) |
| [Columbia Road](https://sumble.com/orgs/columbia-road) | 42 | 0 | "…Cloud, Hubspot, Pardot, Marketo, Eloqua, Exponea/Bloomreach, Customer.io, Braze" (crm consultant, Aug 7, 2026) |
| [Gorgias](https://sumble.com/orgs/gorgias) | 38 | 1 | "Outreaches and Initiatives: Candu, Customer.io, Guideflow, PromptLayer" (Senior Lifecycle Growth Manager, Jul 29, 2026) |
| [SOFTSWISS](https://sumble.com/orgs/softswiss) | 29 | 5 | "Creating and improving multi-channel campaigns (email, SMS, in-app) using Customer.io" (Retention Specialist - Middle, May 22, 2026) |

## Is hiring for Customer.io growing?

Hiring for Customer.io is growing. 0.94 in every 10,000 job posts named it from June to August 2026, against 0.84 from March to May. July 2026 was its highest month since October 2025, at 1.1.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 107 | 1,413,673 | 0.76 |
| Nov 2025 | 118 | 1,822,119 | 0.65 |
| Dec 2025 | 100 | 1,236,103 | 0.81 |
| Jan 2026 | 167 | 1,828,002 | 0.91 |
| Feb 2026 | 180 | 1,856,647 | 0.97 |
| Mar 2026 | 146 | 1,850,711 | 0.79 |
| Apr 2026 | 153 | 1,728,886 | 0.88 |
| May 2026 | 153 | 1,821,509 | 0.84 |
| Jun 2026 | 160 | 1,909,496 | 0.84 |
| Jul 2026 | 192 | 1,815,180 | 1.1 |
| Aug 2026 | 170 | 1,835,698 | 0.93 |

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

Customer.io showed up in job posts at 179 companies for the first time from June to August 2026, and 156 in the three months before. The 179 from June to August are 11% of all 1,675 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 156 |
| June to August 2026 | 179 |
| October 2025 to August 2026 | 583 |

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 Customer.io?

1,675 of the 2,635 companies name Customer.io in their own job posts. 175 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Customer.io | 1,675 | 64% |
| Employees' profiles list Customer.io | 960 | 36% |

## What size are the companies that use Customer.io?

Smaller companies stand out among Customer.io users: companies with fewer than 50 employees are 36% of them, against 22% on the typical tech page. 167 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 36% | 22% |
| 50 to 999 | 49% | 38% |
| 1,000 to 5,000 | 8.7% | 17% |
| Over 5,000 | 6.3% | 23% |

## Where are Customer.io companies based?

Beyond the United States (43%), Customer.io is unusually common in Australia, at 3.2% of its companies. Its companies are based in 91 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 1,072 | 43% | 43% |
| United Kingdom | 212 | 8.6% | 6.4% |
| France | 126 | 5.1% | 4.6% |
| Germany | 98 | 4% | 4.4% |
| Canada | 94 | 3.8% | 3.6% |
| Australia | 78 | 3.2% | 2.2% |

## Which teams work with Customer.io?

At 111 companies, the team named in Customer.io job posts is marketing, at least twice the next. Next come growth teams (51 companies) and CRM teams (39).

| Team | Companies |
|---|---:|
| Marketing | 111 |
| Growth | 51 |
| CRM | 39 |
| Lifecycle marketing | 27 |
| Product | 27 |
| Growth marketing | 22 |

## Which roles mention Customer.io most?

Lifecycle Marketing job posts naming Customer.io grew the fastest among its top roles: 140 from June to August 2026, up from 86 from March to May. The top four roles cover 47% of these job posts.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Lifecycle Marketing | 24% | 388 | 86 | 140 |
| Growth Marketing | 9.8% | 162 | 50 | 49 |
| Revenue Operations | 9.2% | 152 | 43 | 44 |
| Marketing | 4.4% | 73 | 17 | 25 |
| Marketing Operations | 3.8% | 62 | 19 | 15 |
| Product Marketing | 3.5% | 57 | 16 | 22 |

## Which companies started naming Customer.io in job posts recently?

Between April and August 2026, Customer.io appeared for the first time in job posts at 140 companies: 129 commercial, 6 mid-market and 5 enterprise. Sleep Country Canada and Leadtech Group lead the new commercial companies, with 4 job posts each from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [ClearGrid](https://sumble.com/orgs/cleargrid-ai) | 2 |
| AI native | [Augment Code by Harness](https://sumble.com/orgs/augmentinc) | 2 |
| AI native | [Subquadratic](https://sumble.com/orgs/aldea-inc-ai) | 2 |
| AI native | [Guild.ai](https://sumble.com/orgs/guild-ai-group) | 2 |
| AI native | [Consuma](https://sumble.com/orgs/consuma-ai) | 2 |
| Commercial | [Sleep Country Canada](https://sumble.com/orgs/sleep-country-canada) | 4 |
| Commercial | [Leadtech Group](https://sumble.com/orgs/leadtech) | 4 |
| Commercial | [Maven Clinic](https://sumble.com/orgs/maven-clinic) | 3 |
| Commercial | [Jusbrasil](https://sumble.com/orgs/jusbrasil) | 3 |
| Commercial | [Plusgrade](https://sumble.com/orgs/plusgrade) | 3 |
| Mid-market | [Learning Care](https://sumble.com/orgs/learning-care-group) | 1 |
| Mid-market | [Match Group](https://sumble.com/orgs/match-group) | 1 |
| Mid-market | [eDreams ODIGEO](https://sumble.com/orgs/edreamsodigeo) | 1 |
| Mid-market | [Dandy](https://sumble.com/orgs/dandy) | 1 |
| Mid-market | [Prima](https://sumble.com/orgs/hello-prima-com) | 1 |
| Enterprise | [Santander](https://sumble.com/orgs/santander) | 2 |
| Enterprise | [Amazon Web Services (AWS)](https://sumble.com/orgs/amazon-web-services) | 1 |
| Enterprise | [FLEETCOR](https://sumble.com/orgs/fleetcor) | 1 |
| Enterprise | [Teladoc Health](https://sumble.com/orgs/teladoc-health) | 1 |
| Enterprise | [Datavant](https://sumble.com/orgs/datavant) | 1 |

Companies that named Customer.io 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 Customer.io companies use?

Iterable, PostHog and Braze show up far more often at Customer.io companies than at companies of the same size. Hightouch comes fourth, 37 times as common as usual, at 5.5%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Iterable | 378 | 24% | 0.4% | 62 times |
| PostHog | 172 | 11% | 0.19% | 59 times |
| Braze | 603 | 39% | 1% | 38 times |
| Hightouch | 85 | 5.5% | 0.15% | 37 times |
| Ashby | 125 | 8.1% | 0.23% | 36 times |
| Amplitude | 532 | 34% | 1.1% | 30 times |
| Mixpanel | 579 | 37% | 1.3% | 30 times |
| Retool | 103 | 6.6% | 0.24% | 27 times |

Shares are out of the 1,550 companies whose job posts name Customer.io, not counting firms whose job posts name almost every technology.

## Which project themes come up in Customer.io job posts?

Beyond general digital transformation, the most common project theme in Customer.io job posts is Data Infrastructure Migration (30 posts). After that comes Generative AI, with 19.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 106 |
| Data Infrastructure Migration | 30 |
| Generative AI | 19 |
| Cloud Cost Optimization | 10 |

## 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.