Shipvane · 4 AE roles
Marco E. · joined Cargolio
Fleetora · first roles in DECompanies using C#_
As of 4 November 2026, 11,531 companies name C# in their own job postings; it leaves no trace on websites or in DNS.
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
- Largest market
- –
- Companies with 51+ staff
- –
- Top industry
- –
- Team that names it most
- Software engineering · 40,208 postings
- Hiring on it, last 30 days
- 8,527 companies
- Most often alongside
- .NET · 8,081 companies
Where C# shows up
Each population is counted on its own. We never add them up without saying so, because they answer different questions.
Companies whose own pages load C#'s scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at C#. From our crawl of 41.5M company websites and the DNS sweep behind it. Reach: the tool is in the building.
Companies whose own postings say the team works in C#. Read hourly from ~70 applicant tracking systems, with the function, a quote and a date. Intent: the team that runs it is hiring.
Companies in the footprint whose postings also name C#. The rest of the posting population (11,531) runs C# without a public trace on the site or in DNS, which is where job data earns its place.
Companies on C#
Companies with 201+ employees and high-confidence evidence in their own postings; job boards and portals left out.
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Who runs C# inside the company
The 11,531 companies whose postings name C#: by country, size and the function of the role. The second number in the function table is companies.
| postings · companies | |
|---|---|
| Software engineering | 40,208 · 10,150 |
| IT operations & business systems | 3,878 · 1,856 |
| Data & AI | 3,651 · 1,363 |
| Engineering (non-software) | 3,302 · 1,211 |
| Product, program & project management | 485 · 322 |
| Sales | 477 · 205 |
| Unclassified | 377 · 205 |
| Finance & accounting | 310 · 143 |
| Customer service & success | 297 · 175 |
| Design & UX | 279 · 123 |
| companies | share | |
|---|---|---|
| United States | 5,745 | 50% |
| Germany | 1,015 | 9% |
| United Kingdom | 785 | 7% |
| India | 391 | 3% |
| Canada | 322 | 3% |
| Netherlands | 317 | 3% |
| France | 295 | 3% |
| Australia | 196 | 2% |
| Sweden | 187 | 2% |
| Italy | 176 | 2% |
| Poland | 147 | 1% |
| Brazil | 129 | 1% |
| companies | share | |
|---|---|---|
| Self-employed | 262 | 2% |
| 2-10 employees | 927 | 8% |
| 11-50 employees | 2,235 | 19% |
| 51-200 employees | 2,500 | 22% |
| 201-500 employees | 1,651 | 14% |
| 501-1000 employees | 1,024 | 9% |
| 1001-5000 employees | 1,587 | 14% |
| 5001-10000 employees | 427 | 4% |
| 10,001+ employees | 918 | 8% |
| postings | |
|---|---|
| Postings, last 30 days | 34,135 |
| Postings, last 90 days | 45,032 |
| All open postings | 60,810 |
8,527 companies opened a role that names C# in the last 30 days. A hiring team that names its tools is the moment to write to the person who owns the stack.
What C# teams also ask for
Tools named in the same postings as C#. Office software is left out.
C# against the rest of its category
Ranked by companies naming each tool in postings. Whole category →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
11,531 companies name C# in their own job postings; it leaves no trace on websites or in DNS, so the posting layer is the whole picture. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/c-sharp)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Website codeScripts, tags and embeds found on the company's own pages in our crawl of 41.5M sites. A tool counts once per company.
- DNS recordsSPF includes, DKIM selectors, MX and CNAME records of the company's domain that point at C# or another vendor. Swept in cycles; dedicated mail-provider and hosting facets open once coverage passes 80% per country.
- Job postingsRead hourly from the applicant tracking systems behind company career sites. A tool counts when the employer's own text names it as the team's system; candidate wish-lists and apply boilerplate are excluded. Confidence low, medium or high per company.
- Sending infrastructureCold-e-mail sending domains are look-alike domains on a provider's infrastructure (DNS records, certificate logs) that redirect to the company. Absence is not evidence: only companies with a found sending domain are counted.
- CompaniesCountry, size and industry come from the company profile we build from its website; headcount from LinkedIn where known, otherwise estimated. Job boards, portals and aggregators are kept out of lists.
C# data: questions
How many companies use C#?
11,531 as of 4 November 2026: 0 carry C# on their website or in their DNS records and 11,531 name it in their own job postings; 0 show up in both. We keep the two counts apart because they measure different things.
What does "website or DNS" mean?
Our crawler finds C#'s scripts, embeds and tags on the company's own pages, and our DNS sweep reads the domain's mail and hosting records (SPF includes, DKIM selectors, MX, CNAMEs) that point at C#. Either one puts the company in the footprint. The sweep is still running, so this number grows week by week.
Why is the job-posting number so much smaller?
A posting only names a tool when the team that will use it is hiring and chooses to say so. That makes it a smaller but stronger signal: it tells you which team runs C#, with a quote and a date. The footprint tells you reach.
How fresh is this?
Career sites are read hourly, websites are re-crawled on a rolling schedule and DNS is re-swept in cycles. The date at the top is when these counts were computed.
Can I get the list?
Yes. The first 20 are on this page; the full 11,531 with verified e-mails and a weekly feed of new C# users is in the product. Counting is free.
Get this list your way
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Every company on C#,
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