# Companies using Julia

16,071 companies use Julia, based on their job posts and their employees' public profiles. Hiring for it is steady, with 2,760 job posts naming it from October 2025 to August 2026. Researcher is the role that names it most often.

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

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

The five companies with the most job posts naming Julia are Deloitte, Sandia National Laboratories, Just Group plc, National Laboratory of the Rockies and Los Alamos National Laboratory. Just Group plc is the newest of the five companies in the table, with its first job post naming it in December 2023.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Deloitte](https://sumble.com/orgs/deloitte) | 155 | 67 | "l Proven experience in: Python, R, TensorFlow, PyTorch, Keras, Julia, ML libraries, NLP, etc." (Applied AI Platforms Engineer III - SAP Datasphere/BDC, Nov 7, 2026) |
| [Sandia National Laboratories](https://sumble.com/orgs/sandia-national-laboratories) | 155 | 28 | "Software development experience in C++, C, MATLAB, R, Python, Julia, or related languages." (senior/principal r&d artificial intelligence - generative si, onsite, Nov 1, 2026) |
| [Just Group plc](https://sumble.com/orgs/justcorporations) | 155 | 9 | "Interested in or has experience in using coding languages to assist with large scale data analysis - for example, VBA, Julia, Python, SQL" (Senior DB Reinsurance Operations Analyst, Sep 1, 2026) |
| [National Laboratory of the Rockies](https://sumble.com/orgs/national-renewable-energy-laboratory) | 149 | 32 | "Experience with software development for scripting and automation of such analyses, particularly in Python, Julia, or Rust" (Senior Grid Analyst—Power Flow and Integrated Planning, Sep 12, 2026) |
| [Los Alamos National Laboratory](https://sumble.com/orgs/los-alamos-national-laboratory) | 130 | 35 | "Scientific programming and quantitative data-analysis experience using one or more languages such as Python, C++, Fortran, Julia, or MATLAB." (Postdoctoral Research Associate in Computational Acoustics and Materials Characterization, Nov 7, 2026) |

## Is hiring for Julia growing?

Hiring for Julia barely changed, at 1.4 in every 10,000 job posts from June to August 2026 against 1.4 from March to May. From October to December 2025 it was 1.6.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 213 | 1,413,673 | 1.5 |
| Nov 2025 | 295 | 1,822,119 | 1.6 |
| Dec 2025 | 192 | 1,236,103 | 1.6 |
| Jan 2026 | 290 | 1,828,002 | 1.6 |
| Feb 2026 | 258 | 1,856,647 | 1.4 |
| Mar 2026 | 236 | 1,850,711 | 1.3 |
| Apr 2026 | 240 | 1,728,886 | 1.4 |
| May 2026 | 262 | 1,821,509 | 1.4 |
| Jun 2026 | 260 | 1,909,496 | 1.4 |
| Jul 2026 | 217 | 1,815,180 | 1.2 |
| Aug 2026 | 297 | 1,835,698 | 1.6 |

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

90 companies named Julia in a job post for the first time from June to August 2026, against 103 from March to May. Of the 3,129 companies whose job posts name it, 2.9% first named it from June to August.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 103 |
| June to August 2026 | 90 |
| October 2025 to August 2026 | 361 |

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 Julia?

Most of these companies come from employees' profiles: 81% have no job post naming Julia. 3,129 name it in their own job posts.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Julia | 3,129 | 19% |
| Employees' profiles list Julia | 12,942 | 81% |

## What size are the companies that use Julia?

By size, the biggest group of Julia users is companies with 50 to 999 employees, at 42%. 2,170 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 26% | 22% |
| 50 to 999 | 42% | 38% |
| 1,000 to 5,000 | 19% | 17% |
| Over 5,000 | 14% | 23% |

## Where are Julia companies based?

The United States has the most Julia companies (38%), but Germany stands out: 7.4% of them, against 4.4% on the typical tech page. Its companies are based in 137 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 5,876 | 38% | 43% |
| Germany | 1,127 | 7.4% | 4.4% |
| United Kingdom | 971 | 6.3% | 6.4% |
| France | 746 | 4.9% | 4.6% |
| Brazil | 690 | 4.5% | 2.8% |
| Canada | 560 | 3.7% | 3.6% |

## Which teams work with Julia?

Job posts for Julia point to data science teams far more than any other, at 73 companies. R&D and data teams come next, at 27 and 20 companies.

| Team | Companies |
|---|---:|
| Data science | 73 |
| R&D | 27 |
| Data | 20 |
| AI | 15 |
| Research & development | 12 |
| Engineering | 11 |

## Which roles mention Julia most?

Researcher roles lead with 14% of job posts naming Julia, but Systems Engineer roles are catching up: 31 from June to August 2026, against 11 from March to May. Researcher posts naming it numbered 79 from March to May 2026 and 101 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Researcher | 14% | 384 | 79 | 101 |
| Data Scientist | 8.3% | 229 | 63 | 52 |
| Software Engineer | 7.7% | 213 | 48 | 53 |
| AI Engineer | 5% | 137 | 35 | 35 |
| Systems Engineer | 2.3% | 63 | 11 | 31 |
| Machine Learning | 2.2% | 62 | 7 | 13 |

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

Between April and August 2026, 104 companies with 50 or more employees first named Julia in a job post, 21 of them with more than 5,000 employees. Among the new enterprise companies, Tata Consultancy Services posted the most jobs naming it: 5.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [Google DeepMind](https://sumble.com/orgs/deepmind) | 1 |
| AI native | [Waabi](https://sumble.com/orgs/waabi) | 1 |
| AI native | [Seekr](https://sumble.com/orgs/ntent) | 1 |
| AI native | [Climind](https://sumble.com/orgs/climindtech) | 1 |
| AI native | [Moleculyst](https://sumble.com/orgs/moleculyst) | 1 |
| Commercial | [DCCA](https://sumble.com/orgs/dcca) | 4 |
| Commercial | [IMDEA Energy](https://sumble.com/orgs/imdea-energy) | 3 |
| Commercial | [Franklin Energy](https://sumble.com/orgs/franklin-energy) | 2 |
| Commercial | [MOREgroup](https://sumble.com/orgs/moregroup) | 2 |
| Commercial | [Great West Casualty Company](https://sumble.com/orgs/great-west-casualty) | 2 |
| Mid-market | [SOSi](https://sumble.com/orgs/sosi) | 3 |
| Mid-market | [Berlitz](https://sumble.com/orgs/berlitz) | 2 |
| Mid-market | [SES Satellites](https://sumble.com/orgs/ses-5) | 2 |
| Mid-market | [Vinted](https://sumble.com/orgs/vinted) | 2 |
| Mid-market | [Hanwha Systems](https://sumble.com/orgs/한화시스템) | 2 |
| Enterprise | [Tata Consultancy Services](https://sumble.com/orgs/tata-consultancy-services-tcs) | 5 |
| Enterprise | [NTT DATA North America](https://sumble.com/orgs/ntt-data-americas) | 4 |
| Enterprise | [GE Vernova](https://sumble.com/orgs/ge-vernova) | 3 |
| Enterprise | [NCS Group](https://sumble.com/orgs/ncs-58f32852) | 3 |
| Enterprise | [Vanderbilt University](https://sumble.com/orgs/vanderbilt-university) | 3 |

Companies that named Julia 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 Julia companies use?

The tool most tied to Julia is OpenMP. 7.1% of Julia companies use it, 18 times the usual rate for their size. GAMS is 18 times as common as usual, at 5.8%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| OpenMP | 159 | 7.1% | 0.4% | 18 times |
| GAMS | 129 | 5.8% | 0.33% | 18 times |
| Lustre | 112 | 5% | 0.32% | 16 times |
| Fortran | 502 | 23% | 1.5% | 15 times |
| Slurm | 344 | 15% | 1.1% | 14 times |
| JAX | 284 | 13% | 0.98% | 13 times |
| COMSOL | 358 | 16% | 1.3% | 13 times |
| Zemax | 128 | 5.7% | 0.46% | 13 times |

Shares are out of the 2,231 companies whose job posts name Julia, not counting firms whose job posts name almost every technology.

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

Beyond general digital transformation, the most common project theme in Julia job posts is Generative AI (200 posts). Data Infrastructure Migration is next, in 81 job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 576 |
| Generative AI | 200 |
| Data Infrastructure Migration | 81 |
| Cloud Cost Optimization | 35 |

## 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.