# Companies using Ray

We found 3,176 companies that use Ray. 2,354 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; 4,415 job posts named it from October 2025 to August 2026. Data science teams are its most common home.

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

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

The five companies with the most job posts naming Ray are Apple, Google, JPMorganChase, Uber and NVIDIA. Of the five companies in the table, Apple has the most employees who list it on their profiles: 22.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Apple](https://sumble.com/orgs/apple) | 311 | 22 | "Experience designing and implementing scalable data processing pipelines using Spark, Ray, or similar distributed computing frameworks." (Machine Learning Research Engineer, Pretraining Data - Foundation Models, Oct 26, 2026) |
| [Google](https://sumble.com/orgs/google) | 290 | 19 | "You will be the technical bridge between GKE's robust infrastructure and the rapidly evolving OSS AI ecosystem (e.g., Ray, Slurm, KubeFlow, PyTorch, NumPy, CUDA)." (Principal Engineer, AI Ecosystem, Nov 1, 2026) |
| [JPMorganChase](https://sumble.com/orgs/jpmorgan-chase) | 254 | 8 | "Implement quantization techniques and deploy open-weight large language models (LLMs) on modern serving stacks such as vLLM on Ray to maximize efficiency and resource utilization." (Executive Director Machine Learning Engineer-MLOps, Oct 27, 2026) |
| [Uber](https://sumble.com/orgs/uber) | 223 | 6 | "Familiar with distributed batch processing: Ray" (Staff Software Engineer - ML Infra, Nov 7, 2026) |
| [NVIDIA](https://sumble.com/orgs/nvidia) | 160 | 16 | "Design and implement end-to-end integrations of Grove with open-source AI frameworks (e.g., Dynamo, llm-d, Ray, PyTorch, and related ecosystem projects)." (Senior Software Engineer, AI Frameworks, Nov 4, 2026) |

## Is hiring for Ray growing?

Hiring for Ray barely changed, at 2.2 in every 10,000 job posts from June to August 2026 against 2.1 from March to May. Its busiest month was November 2025, at 2.8.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 382 | 1,413,673 | 2.7 |
| Nov 2025 | 503 | 1,822,119 | 2.8 |
| Dec 2025 | 311 | 1,236,103 | 2.5 |
| Jan 2026 | 441 | 1,828,002 | 2.4 |
| Feb 2026 | 421 | 1,856,647 | 2.3 |
| Mar 2026 | 376 | 1,850,711 | 2.0 |
| Apr 2026 | 342 | 1,728,886 | 2.0 |
| May 2026 | 438 | 1,821,509 | 2.4 |
| Jun 2026 | 397 | 1,909,496 | 2.1 |
| Jul 2026 | 410 | 1,815,180 | 2.3 |
| Aug 2026 | 394 | 1,835,698 | 2.1 |

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

219 companies named Ray in a job post for the first time from June to August 2026, against 184 from March to May. From October 2025 to August 2026, 791 companies named it in a job post for the first time.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 184 |
| June to August 2026 | 219 |
| October 2025 to August 2026 | 791 |

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 Ray?

2,354 companies name Ray in job posts they wrote, and employees' profiles add 822 more. 302 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Ray | 2,354 | 74% |
| Employees' profiles list Ray | 822 | 26% |

## What size are the companies that use Ray?

Smaller companies stand out among Ray users: companies with fewer than 50 employees are 28% of them, against 22% on the typical tech page. 572 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 28% | 22% |
| 50 to 999 | 38% | 38% |
| 1,000 to 5,000 | 16% | 17% |
| Over 5,000 | 18% | 23% |

## Where are Ray companies based?

The United States dominates for Ray, with 51% of the companies that use it. The United Kingdom is second, at 5.4%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 1,528 | 51% | 43% |
| United Kingdom | 162 | 5.4% | 6.4% |
| India | 154 | 5.2% | 6.9% |
| Germany | 129 | 4.3% | 4.4% |
| France | 110 | 3.7% | 4.6% |
| Turkey | 109 | 3.7% | 0.75% |

## Which teams work with Ray?

Data science teams are the most common home for Ray, at 50 companies, followed by AI and AI platform. Data engineering and engineering teams follow, at 26 companies each.

| Team | Companies |
|---|---:|
| Data science | 50 |
| AI | 43 |
| AI platform | 28 |
| Data engineering | 26 |
| Engineering | 26 |
| Machine learning | 24 |

## Which roles mention Ray most?

AI Engineer and Machine Learning roles account for 40% of the job posts that name Ray. AI Engineer posts naming it numbered 223 from March to May 2026 and 230 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| AI Engineer | 21% | 925 | 223 | 230 |
| Machine Learning | 19% | 836 | 191 | 199 |
| Software Engineer | 12% | 521 | 122 | 127 |
| Data Scientist | 4% | 178 | 56 | 43 |
| Data Engineer | 3.7% | 163 | 39 | 55 |
| MLOps Engineer | 3.7% | 163 | 42 | 31 |

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

208 companies with 50 or more employees started naming Ray in job posts between April and August 2026. 51 of them have more than 5,000 employees. Aptiv has the most job posts of the new enterprise companies, 8 from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [NYB AI](https://sumble.com/orgs/nanyang-biologics) | 6 |
| AI native | [DeepHow](https://sumble.com/orgs/deephow) | 5 |
| AI native | [TwelveLabs](https://sumble.com/orgs/twelvelabs) | 4 |
| AI native | [Domyn](https://sumble.com/orgs/igenius) | 3 |
| AI native | [DeepRoute.ai](https://sumble.com/orgs/deeproute-ai) | 3 |
| Commercial | [Bitdeer (NASDAQ: BTDR)](https://sumble.com/orgs/bitdeer) | 6 |
| Commercial | [Raft](https://sumble.com/orgs/raft-6) | 6 |
| Commercial | [Biohub](https://sumble.com/orgs/cz-biohub) | 5 |
| Commercial | [Salesloft](https://sumble.com/orgs/salesloft) | 4 |
| Commercial | [Zalo](https://sumble.com/orgs/zalo) | 3 |
| Mid-market | [SCC France](https://sumble.com/orgs/scc-france) | 5 |
| Mid-market | [Gen](https://sumble.com/orgs/gen-c9abd319) | 4 |
| Mid-market | [iManage](https://sumble.com/orgs/imanage) | 4 |
| Mid-market | [Zycus](https://sumble.com/orgs/zycus-infotech) | 4 |
| Mid-market | [ECS](https://sumble.com/orgs/ecs) | 3 |
| Enterprise | [Aptiv](https://sumble.com/orgs/aptiv-1) | 8 |
| Enterprise | [PepsiCo](https://sumble.com/orgs/pepsico) | 5 |
| Enterprise | [McDonald's](https://sumble.com/orgs/mcdonalds) | 4 |
| Enterprise | [SCC](https://sumble.com/orgs/scc) | 4 |
| Enterprise | [TD](https://sumble.com/orgs/td-bank) | 3 |

Companies that named Ray 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 Ray companies use?

Flyte and DeepSpeed are the tools most closely tied to Ray. SGLang comes third, 77 times as common as usual, at 9.8%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Flyte | 82 | 5.1% | 0.06% | 83 times |
| DeepSpeed | 247 | 15% | 0.19% | 81 times |
| SGLang | 159 | 9.8% | 0.13% | 77 times |
| KServe | 118 | 7.3% | 0.12% | 62 times |
| NVIDIA Triton | 414 | 26% | 0.5% | 52 times |
| TorchServe | 111 | 6.9% | 0.14% | 49 times |
| vLLM | 434 | 27% | 0.57% | 47 times |
| Weights & Biases | 292 | 18% | 0.44% | 41 times |

Shares are out of the 1,616 companies whose job posts name Ray, not counting firms whose job posts name almost every technology.

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

Teams most often pair Ray with Generative AI (1,403 job posts), then broad digital transformation, then Cloud Cost Optimization and Data Infrastructure Migration.

| Project theme | Job posts |
|---|---:|
| Generative AI | 1,403 |
| Digital Transformation | 1,109 |
| Cloud Cost Optimization | 714 |
| Data Infrastructure Migration | 277 |

## 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.