# Companies using FAISS

We found 7,377 companies that use FAISS. 4,255 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; 7,503 job posts named it from October 2025 to August 2026. AI teams are its most common home.

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

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

Tata Consultancy Services has posted more jobs naming FAISS than any other company: 209. Infosys is the newest of the five companies in the table, with its first job post naming it in April 2025.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Tata Consultancy Services](https://sumble.com/orgs/tata-consultancy-services-tcs) | 209 | 66 | "Build RAG solutions using vector databases such as FAISS, Pinecone, or OpenSearch." (Java with Gen AI- Chn/blr/hyd_8 to 12 yrs, Oct 24, 2026) |
| [Infosys](https://sumble.com/orgs/infosys) | 152 | 32 | "Vector databases and search technologies (OpenSearch, Pinecone, FAISS, Weaviate)" (AI Engineering Architect, Nov 1, 2026) |
| [Capgemini](https://sumble.com/orgs/capgemini) | 148 | 43 | "Experience developing LLM based applications using LangChain embeddings vector databases FAISS Chroma Pinecone or similar technologies" (AI Solutions Developer, Nov 7, 2026) |
| [Virtusa](https://sumble.com/orgs/virtusa) | 145 | 11 | "…exposure to LLM agents like LangChain vector databases Pinecone or Chroma or FAISS Ability to quickly conduct experiments and analyze the features and capabilities of newer versions of the…" (AI Architect, Oct 24, 2026) |
| [EY](https://sumble.com/orgs/ey) | 128 | 31 | "Data and retrieval - SQL/NoSQL, vector databases such as Azure AI Search, Pinecone, Weaviate, FAISS or equivalent;" (DE - AE- AI Architect-SM-GDS04, Nov 4, 2026) |

## Is hiring for FAISS growing?

Demand for FAISS is steady: 3.6 in every 10,000 job posts from June to August 2026, close to the 3.8 of March to May. Its busiest month was November 2025, at 4.8.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 566 | 1,413,673 | 4.0 |
| Nov 2025 | 881 | 1,822,119 | 4.8 |
| Dec 2025 | 473 | 1,236,103 | 3.8 |
| Jan 2026 | 769 | 1,828,002 | 4.2 |
| Feb 2026 | 746 | 1,856,647 | 4.0 |
| Mar 2026 | 701 | 1,850,711 | 3.8 |
| Apr 2026 | 671 | 1,728,886 | 3.9 |
| May 2026 | 706 | 1,821,509 | 3.9 |
| Jun 2026 | 672 | 1,909,496 | 3.5 |
| Jul 2026 | 669 | 1,815,180 | 3.7 |
| Aug 2026 | 649 | 1,835,698 | 3.5 |

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

344 companies named FAISS in a job post for the first time from June to August 2026, against 481 from March to May. Of the 4,255 companies whose job posts name it, 8.1% first named it from June to August.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 481 |
| June to August 2026 | 344 |
| October 2025 to August 2026 | 1,732 |

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 FAISS?

Employees' profiles add 3,122 companies to the 4,255 that name FAISS in job posts. 582 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name FAISS | 4,255 | 58% |
| Employees' profiles list FAISS | 3,122 | 42% |

## What size are the companies that use FAISS?

The largest group of FAISS users is companies with 50 to 999 employees (40%), more than on the typical tech page. The second-largest group is companies with fewer than 50 employees, at 31%.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 31% | 22% |
| 50 to 999 | 40% | 38% |
| 1,000 to 5,000 | 13% | 17% |
| Over 5,000 | 15% | 23% |

## Where are FAISS companies based?

FAISS has an unusually large following in India: 19% of its companies, against 6.9% on the typical tech page. Its companies are based in 102 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 3,052 | 43% | 43% |
| India | 1,318 | 19% | 6.9% |
| United Kingdom | 317 | 4.5% | 6.4% |
| Canada | 195 | 2.8% | 3.6% |
| France | 188 | 2.7% | 4.6% |
| Germany | 184 | 2.6% | 4.4% |

## Which teams work with FAISS?

Job posts for FAISS point to AI teams far more than any other, at 91 companies.

| Team | Companies |
|---|---:|
| AI | 91 |
| AI/ML | 25 |
| AI engineering | 24 |
| Engineering | 24 |
| Data science | 20 |
| AI innovation | 16 |

## Which roles mention FAISS most?

FAISS is mostly a AI Engineer skill: 51% of the job posts naming it are for that role. Software Engineer is second, at 9.5%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| AI Engineer | 51% | 3,802 | 1,050 | 921 |
| Software Engineer | 9.5% | 712 | 169 | 188 |
| Data Scientist | 5.9% | 442 | 113 | 107 |
| Machine Learning | 4.5% | 335 | 69 | 78 |
| Data Engineer | 1.9% | 142 | 38 | 25 |
| Solutions Architect | 1.8% | 132 | 36 | 28 |

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

Between April and August 2026, FAISS appeared for the first time in job posts at 450 companies: 275 commercial, 80 mid-market and 95 enterprise. Miratech leads the new mid-market companies, with 7 job posts from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [DecoverAI](https://sumble.com/orgs/decoverhq) | 2 |
| AI native | [AIONOS](https://sumble.com/orgs/aionos-ai) | 1 |
| AI native | [Plaud](https://sumble.com/orgs/plaudai) | 1 |
| AI native | [ImagineArt](https://sumble.com/orgs/imagineartai) | 1 |
| AI native | [Parspec](https://sumble.com/orgs/parspec) | 1 |
| Commercial | [UsefulBI Corporation](https://sumble.com/orgs/usefulbi) | 7 |
| Commercial | [Activate Interactive](https://sumble.com/orgs/activate-interactive) | 7 |
| Commercial | [Leadtech Group](https://sumble.com/orgs/leadtech) | 6 |
| Commercial | [Highbrow Technology Inc](https://sumble.com/orgs/highbrow-technology) | 5 |
| Commercial | [Daman](https://sumble.com/orgs/daman-consulting) | 5 |
| Mid-market | [Miratech](https://sumble.com/orgs/miratech) | 7 |
| Mid-market | [Keyrus](https://sumble.com/orgs/keyrus-belgium) | 6 |
| Mid-market | [NAV Fund Services](https://sumble.com/orgs/nav-fund-administration-group) | 4 |
| Mid-market | [Optimum Solutions Pte Ltd](https://sumble.com/orgs/optimum-solutions-s) | 4 |
| Mid-market | [Opella](https://sumble.com/orgs/opella-health) | 3 |
| Enterprise | [MetLife](https://sumble.com/orgs/metlife) | 5 |
| Enterprise | [Marsh Risk](https://sumble.com/orgs/marsh) | 4 |
| Enterprise | [Paramount](https://sumble.com/orgs/paramount-66ac57f4) | 4 |
| Enterprise | [Tietoevry](https://sumble.com/orgs/tietoevry) | 4 |
| Enterprise | [Paytm](https://sumble.com/orgs/paytm) | 4 |

Companies that named FAISS 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 FAISS companies use?

61% of FAISS companies also use Weaviate, against 0.86% of similar companies. Among the tools listed here, Pinecone is the most widely used, at 83% of FAISS companies.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Weaviate | 1,851 | 61% | 0.86% | 70 times |
| ChromaDB | 1,020 | 33% | 0.51% | 65 times |
| Pinecone | 2,542 | 83% | 1.3% | 64 times |
| Milvus | 766 | 25% | 0.44% | 58 times |
| Cohere | 175 | 5.7% | 0.11% | 51 times |
| Qdrant | 530 | 17% | 0.42% | 42 times |
| Mistral | 645 | 21% | 0.55% | 38 times |
| Haystack | 179 | 5.9% | 0.16% | 38 times |

Shares are out of the 3,053 companies whose job posts name FAISS, not counting firms whose job posts name almost every technology.

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

Teams hiring for FAISS most often mention Generative AI, in 9,411 job posts. Apart from broad digital transformation work, Cloud Cost Optimization comes next, with 794.

| Project theme | Job posts |
|---|---:|
| Generative AI | 9,411 |
| Digital Transformation | 1,304 |
| Cloud Cost Optimization | 794 |
| Microservices Migration | 248 |

## 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.