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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 · Markdown version

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 Posts People Recent job post
Tata Consultancy Services Professional Services · first seen Sep 2024 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 Professional Services · first seen Apr 2025 152 32 "Vector databases and search technologies (OpenSearch, Pinecone, FAISS, Weaviate)"AI Engineering Architect, Nov 1, 2026
Capgemini Professional Services · first seen Feb 2025 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 Professional Services · first seen Nov 2023 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 Professional Services · first seen Aug 2023 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
Showing 1 to 5 of 4,255 companies with job posts Sign up to see all companies using FAISS ›

What else do we know about FAISS?

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.
Share of job posts naming FAISS by month, October 2025 to August 2026, in job posts in every 10,000 Moves from 4.0 in October 2025 to 3.5 in August 2026, in job posts in every 10,000. 5.6 4.2 2.8 1.4 0 3.5 Oct '25 Nov Dec Jan '26 Feb Mar Apr May Jun Jul Aug
Show the data
MonthJob posts naming FAISSAll job postsPer 10,000
Oct 20255661,413,6734.0
Nov 20258811,822,1194.8
Dec 20254731,236,1033.8
Jan 20267691,828,0024.2
Feb 20267461,856,6474.0
Mar 20267011,850,7113.8
Apr 20266711,728,8863.9
May 20267061,821,5093.9
Jun 20266721,909,4963.5
Jul 20266691,815,1803.7
Aug 20266491,835,6983.5

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.
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%

7,377 companies. Each is counted once, under the strongest evidence we have for it.

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%.

Share of its companies Typical tech page

ShareTypical
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.
ShareTypical
United States
43% 43%
India
19% 6.9%
United Kingdom
4.5% 6.4%
Canada
2.8% 3.6%
France
2.7% 4.6%
Germany
2.6% 4.4%

Companies in 102 countries and territories. Shares are of companies with a known headquarters country.

Show the data
CountryCompaniesShareTypical tech page
United States3,05243%43%
India1,31819%6.9%
United Kingdom3174.5%6.4%
Canada1952.8%3.6%
France1882.7%4.6%
Germany1842.6%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

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.

Share of the 3,053 FAISS companies counted here whose job posts also name the tool Typical for companies the same size

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

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.
AI native any size · 10 new
Company Posts
DecoverAI 2
AIONOS 1
Plaud 1
ImagineArt 1
Parspec 1
Commercial 50 to 999 employees · 275 new
Company Posts
UsefulBI Corporation 7
Activate Interactive 7
Leadtech Group 6
Highbrow Technology Inc 5
Daman 5
Mid-market 1,000 to 5,000 employees · 80 new
Company Posts
Miratech 7
Keyrus 6
NAV Fund Services 4
Optimum Solutions Pte Ltd 4
Opella 3
Enterprise over 5,000 employees · 95 new
Company Posts
MetLife 5
Marsh Risk 4
Paramount 4
Tietoevry 4
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.

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 Posts
AI Engineer
51% 3,802
Software Engineer
9.5% 712
Data Scientist
5.9% 442
Machine Learning
4.5% 335
Data Engineer
1.9% 142
Solutions Architect
1.8% 132
Show the data
RoleShareOct 2025 to Aug 2026Mar to May 2026Jun to Aug 2026
AI Engineer51%3,8021,050921
Software Engineer9.5%712169188
Data Scientist5.9%442113107
Machine Learning4.5%3356978
Data Engineer1.9%1423825
Solutions Architect1.8%1323628

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.