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Companies using Langfuse

6,246 companies use Langfuse, based on their job posts and their employees' public profiles. Its share of job posts jumped in the three months to August 2026, with 3,188 job posts naming it from October 2025 to August 2026. AI Engineer is the role that names it most often.

Data as of November 9, 2026 · Markdown version

Which companies name Langfuse in the most job posts?

The five companies with the most job posts naming Langfuse are Deloitte, EPAM Systems, acemate.ai, Booz Allen Hamilton and Caseware. Booz Allen Hamilton is the newest of the five companies in the table, with its first job post naming it in March 2026.
Company Posts Recent job post
Deloitte Professional Services · first seen Nov 2025 134 "…SQL/NoSQL, PyTorch , TensorFlow, LangChain , LangGraph , LangSmith , LangFuse , Terraform , as well as unit, integration, and end-to-end testing…"Applied AI Platforms Engineer III - SAP Datasphere/BDC, Nov 7, 2026
EPAM Systems Professional Services · first seen Jan 2024 105 "AI Observability & Evaluation: Familiarity with AI evaluation tooling or real-time APM platforms (e.g., LangSmith, Langfuse, Arize)"Lead Python AI Engineer, Oct 24, 2026
acemate.ai Educational Services · first seen Jun 2025 64 "Sentry, Langfuse, PostHog, Stripe, BetterStack"React Native Developer, Nov 4, 2026
Booz Allen Hamilton Professional Services · first seen Mar 2026 59 "…evaluations, and building observation layers for stakeholders, including Grafana, Langfuse, LangSmith, or Phoenix"Agentic AI Engineer, Nov 6, 2026
Caseware first seen Feb 2026 55 "AI Evaluation & Observability: LangFuse, LangSmith, LangChain, LangGraph"AI Senior Software Developer, Oct 3, 2026
Showing 1 to 5 of 2,008 companies with job posts Sign up to see all companies using Langfuse ›

What else do we know about Langfuse?

Is hiring for Langfuse growing?

Job posts mentioning Langfuse went from 1.8 to 2.4 in every 10,000 job posts, comparing March to May with June to August 2026. July 2026 was its highest month since October 2025, at 2.6.
Share of job posts naming Langfuse by month, October 2025 to August 2026, in job posts in every 10,000 Moves from 0.88 in October 2025 to 2.5 in August 2026, in job posts in every 10,000. 3.0 2.2 1.5 0.74 0 2.5 Oct '25 Nov Dec Jan '26 Feb Mar Apr May Jun Jul Aug
Show the data
MonthJob posts naming LangfuseAll job postsPer 10,000
Oct 20251251,413,6730.88
Nov 20251821,822,1191.00
Dec 20251211,236,1030.98
Jan 20261851,828,0021.0
Feb 20262581,856,6471.4
Mar 20262871,850,7111.6
Apr 20263091,728,8861.8
May 20263871,821,5092.1
Jun 20264131,909,4962.2
Jul 20264661,815,1802.6
Aug 20264551,835,6982.5

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

From June to August 2026, 443 companies posted their first job naming Langfuse; 359 did from March to May. That brings the companies naming it for the first time since October 2025 to 1,147, through August 2026.
March to May 2026 359
June to August 2026 443
October 2025 to August 2026 1,147

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 Langfuse?

4,238 of the 6,246 companies show up because employees list Langfuse on their profiles; 2,008 name it in their own job posts. 380 show up in both job posts and employees' profiles.
How we know Companies Share
Job posts name Langfuse
2,008 32%
Employees' profiles list Langfuse
4,238 68%

6,246 companies. Each is counted once, under the strongest evidence we have for it.

What size are the companies that use Langfuse?

By size, the biggest group of Langfuse users is companies with 50 to 999 employees, at 43%. 1,389 of its companies have fewer than 50 employees.

Share of its companies Typical tech page

ShareTypical
Under 50 employees
22% 22%
50 to 999
43% 38%
1,000 to 5,000
17% 17%
Over 5,000
17% 23%

Where are Langfuse companies based?

Beyond the United States (32%), Langfuse is unusually common in Brazil, at 5.2% of its companies. India is second, at 13%.
ShareTypical
United States
32% 43%
India
13% 6.9%
Brazil
5.2% 2.8%
France
5.1% 4.6%
Germany
4.6% 4.4%
United Kingdom
4.6% 6.4%

Companies in 115 countries and territories. Shares are of companies with a known headquarters country.

Show the data
CountryCompaniesShareTypical tech page
United States1,91432%43%
India75513%6.9%
Brazil3135.2%2.8%
France3035.1%4.6%
Germany2774.6%4.4%
United Kingdom2764.6%6.4%

Which teams work with Langfuse?

Langfuse sits mostly with AI teams (44 companies). Next come AI engineering teams (22 companies) and engineering teams (21).
Team Companies
AI
44
AI engineering
22
Engineering
21
AI platform
12
Data science
11
Data
10

What else do Langfuse companies use?

LangSmith, Arize and Promptfoo show up far more often at Langfuse companies than at companies of the same size. Among the tools listed here, LangGraph is the most widely used, at 59% of Langfuse companies.

Share of the 1,442 Langfuse companies counted here whose job posts also name the tool Typical for companies the same size

Tool Also name it Typical Times as common
LangSmith 566 companies
39% 0.48% 82x
Arize 122 companies
8.5% 0.11% 76x
Promptfoo 84 companies
5.8% 0.08% 69x
LiteLLM 147 companies
10% 0.16% 65x
Tool Also name it Typical Times as common
Pydantic AI 90 companies
6.2% 0.14% 43x
pgvector 327 companies
23% 0.64% 35x
Qdrant 242 companies
17% 0.49% 35x
LangGraph 845 companies
59% 2.1% 27x

Which companies started naming Langfuse in job posts recently?

Between April and August 2026, 515 companies with 50 or more employees first named Langfuse in a job post, 102 of them with more than 5,000 employees. Luxoft and Toast lead the new enterprise companies, with 12 job posts each from April to August.
AI native any size · 35 new
Company Posts
Apilex 6
Kulu 4
FieldAI 3
Steps AI 3
MAIA 3
Commercial 50 to 999 employees · 294 new
Company Posts
Leadtech Group 9
Ciklum India 9
Unico Connect 9
QuantumBlack, AI by McKinsey 6
BCG Platinion 5
Mid-market 1,000 to 5,000 employees · 119 new
Company Posts
Turing 11
Ascensus 5
Keyrus 5
Crunchyroll 5
team.blue 5
Enterprise over 5,000 employees · 102 new
Company Posts
Luxoft 12
Toast 12
Tata Consultancy Services 8
Accenture in India 8
UOB 7

Companies that named Langfuse 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 Langfuse most?

Langfuse is showing up in more Software Development Engineer in Test job posts: 39 from June to August 2026, up from 16 from March to May. AI Engineer posts naming it numbered 381 from March to May 2026 and 519 from June to August.
Role Share Posts
AI Engineer
40% 1,261
Software Engineer
15% 478
Machine Learning
4.9% 156
Data Scientist
3.3% 105
MLOps Engineer
2.6% 84
Software Development Engineer in Test
2.2% 70
Show the data
RoleShareOct 2025 to Aug 2026Mar to May 2026Jun to Aug 2026
AI Engineer40%1,261381519
Software Engineer15%478157165
Machine Learning4.9%1565946
Data Scientist3.3%1052642
MLOps Engineer2.6%842426
Software Development Engineer in Test2.2%701639

Which project themes come up in Langfuse job posts?

Teams hiring for Langfuse most often mention Generative AI, in 2,479 job posts. Apart from broad digital transformation work, Cloud Cost Optimization comes next, with 439.
Project theme Job posts
Generative AI 2,479
Digital Transformation 649
Cloud Cost Optimization 439
Data Infrastructure Migration 109
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.