3,659 companies use DNP3, based on their job posts and their employees' public profiles. Its share of job posts is growing, and 4,211 job posts named it from October 2025 to August 2026. Control Engineer is the role that names it most often.
Among the companies with the most job posts naming DNP3 are GE Vernova (510), Hitachi Energy (487) and Siemens (411). GE Vernova is the newest of the five companies in the table, with its first job post naming it in December 2023.
CompanyPostsPeopleRecent job post
GE VernovaScientific and Technical Services · first seen Dec 202351059
"Configure and verify communication protocols such as IEC 61850, DNP3, Modbus TCP/RTU, IEC 60870-5-104, and Ethernet/IP, as applicable."NETCOM Expert – Site Commissioning & Field Service, Nov 6, 2026
Hitachi EnergyUtilities · first seen Sep 202248744
"Support integration of protection systems with RTU, SCADA and substation automation platforms, including IEC 61850, IEC 60870-5-104 and DNP3 communication protocols."Application Engineer - APAC, Nov 7, 2026
SiemensUtilities · first seen Oct 202241166
"…hardware configuration, and protocols such as IEC 61850 (MMS/GOOSE/Sampled Values), DNP3, Modbus, IEC 60870-5-101/103/104, PROFINET, and PROFIBUS."Electrical Engineer - Panel Design, Nov 7, 2026
Schneider ElectricUtilities · first seen Oct 2022364105
"Build end-to-end test suites to test, alarm management, historian modules, and communication protocols (Modbus, DNP3, IEC 60870, IEC 61850, SNMP, OPC-UA/DA)."Deputy Manager - Digital Solutions, Nov 7, 2026
EatonManufacturing · first seen Jul 202221328
"Knowledge of Power Monitoring and Control Systems and associated protocols (Modbus, DNP3, IEC-61850)"Lead Power Systems Controls Engineer, Nov 6, 2026
Job posts mentioning DNP3 went from 2.1 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.
Show the data
Month
Job posts naming DNP3
All job posts
Per 10,000
Oct 2025
277
1,413,673
2.0
Nov 2025
338
1,822,119
1.9
Dec 2025
277
1,236,103
2.2
Jan 2026
378
1,828,002
2.1
Feb 2026
440
1,856,647
2.4
Mar 2026
382
1,850,711
2.1
Apr 2026
360
1,728,886
2.1
May 2026
416
1,821,509
2.3
Jun 2026
463
1,909,496
2.4
Jul 2026
472
1,815,180
2.6
Aug 2026
408
1,835,698
2.2
How many companies named DNP3 in a job post for the first time in recent months?
In the three months to August 2026, 189 companies posted about DNP3 for the first time. From March to May, 165 did. From October 2025 to August 2026, 594 companies named it in a job post for the first time.
March to May 2026165
June to August 2026189
October 2025 to August 2026594
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 DNP3?
2,406 of the 3,659 companies name DNP3 in their own job posts. 1,253 come from employees' profiles alone.
How we knowCompaniesShare
Job posts name DNP3
2,40666%
Employees' profiles list DNP3
1,25334%
3,659 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use DNP3?
By size, the biggest group of DNP3 users is companies with 50 to 999 employees, at 45%. 562 of its companies have more than 5,000 employees.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
23%22%
50 to 999
45%38%
1,000 to 5,000
17%17%
Over 5,000
15%23%
Where are DNP3 companies based?
Beyond the United States (42%), DNP3 is unusually common in Australia, at 5% of its companies. Canada is second, at 6.2%.
ShareTypical
United States
42%43%
Canada
6.2%3.6%
India
5.5%6.9%
United Kingdom
5.3%6.4%
Australia
5%2.2%
Brazil
4.8%2.8%
Companies in 90 countries and territories. Shares are of companies with a known headquarters country.
Show the data
Country
Companies
Share
Typical tech page
United States
1,480
42%
43%
Canada
216
6.2%
3.6%
India
191
5.5%
6.9%
United Kingdom
186
5.3%
6.4%
Australia
174
5%
2.2%
Brazil
168
4.8%
2.8%
Which teams work with DNP3?
DNP3 turns up most in job posts for engineering, SCADA and cybersecurity teams. Operations and IT teams follow.
TeamCompanies
Engineering
47
SCADA
35
Cybersecurity
21
Operations
20
IT
17
Operational technology
15
What else do DNP3 companies use?
DNP3 companies are 78 times as likely as similar companies to use ICCP: 10% of them, against 0.13%. Next is PSLF: 8.1% of these companies use it, against 0.1% of similar ones.
Share of the 1,672 DNP3 companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming DNP3 in job posts recently?
216 companies with 50 or more employees picked up DNP3 in their job posts from April to August 2026. LONGi Energy Storage has the most job posts of the new commercial companies, 6 from April to August.
Companies that named DNP3 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 DNP3 most?
DNP3 shows up across many roles. The top one, Control Engineer, has 16% of the job posts. Control Engineer posts naming it numbered 177 from March to May 2026 and 210 from June to August.
RoleSharePosts
Control Engineer
16%653
Automation Engineer
5.6%234
Skilled Trades
5%212
Engineer
4.6%193
Software Engineer
3.6%153
Systems Engineer
3.5%146
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Control Engineer
16%
653
177
210
Automation Engineer
5.6%
234
53
78
Skilled Trades
5%
212
49
57
Engineer
4.6%
193
55
53
Software Engineer
3.6%
153
40
49
Systems Engineer
3.5%
146
34
43
Which project themes come up in DNP3 job posts?
925 job posts naming DNP3 describe broad digital transformation, and 26 describe Data Infrastructure Migration work. After that comes Security Infrastructure Modernization, with 20.
Project themeJob posts
Digital Transformation925
Data Infrastructure Migration26
Security Infrastructure Modernization20
Microservices Migration9
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.
