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Companies using HART

9,016 companies use HART, based on their job posts and their employees' public profiles. Its share of job posts held steady in the three months to August 2026; 1,374 job posts named it from October 2025 to August 2026. It comes up most in Skilled Trades job posts.

Data as of November 9, 2026 · Markdown version

Which companies name HART in the most job posts?

Emerson has posted more jobs naming HART than any other company: 324. Three of these five companies are in Manufacturing.
Company Posts People Recent job post
Emerson Manufacturing · first seen Aug 2022 324 100 "Working knowledge of embedded communication interfaces and industrial protocols such as CAN, SPI, UART/SCI, I²C, HART, Modbus, and PROFIBUS"Principal Embedded Software Engineer, Nov 8, 2026
Honeywell Technologies Manufacturing · first seen Jun 2023 291 54 "Communication protocols: BPM, MODBUS, HART, OPC UA and DSA."systems engr ii, Nov 7, 2026
Schneider Electric Utilities · first seen Sep 2022 172 36 "Should understand the various industrial communication protocols like Modbus, Profibus, HART, FF etc.…"manager - engineering, Nov 7, 2026
Smithfield Foods Manufacturing · first seen Sep 2022 155 0 "Computer/device communications using standard protocols including TCP/IP, Ethernet/IP, Device net, Modbus, Hart, Serial"Industrial Electrician - 3rd Shift (Sign-On Bonus & Relocation!), Nov 1, 2026
Siemens Utilities · first seen Aug 2022 128 30 "Knowledge of field communication protocols: HART, IO-Link, PROFIBUS PA, PROFINET, Modbus."Account Manager/Director, Oct 23, 2026
Showing 1 to 5 of 1,283 companies with job posts Sign up to see all companies using HART ›

What else do we know about HART?

Is hiring for HART growing?

HART holds a steady place in hiring. 0.77 in every 10,000 job posts named it from June to August 2026, against 0.72 from March to May.
Share of job posts naming HART by month, October 2025 to August 2026, in job posts in every 10,000 Moves from 0.79 in October 2025 to 0.73 in August 2026, in job posts in every 10,000. 0.95 0.71 0.48 0.24 0 0.73 Oct '25 Nov Dec Jan '26 Feb Mar Apr May Jun Jul Aug
Show the data
MonthJob posts naming HARTAll job postsPer 10,000
Oct 20251121,413,6730.79
Nov 20251151,822,1190.63
Dec 2025941,236,1030.76
Jan 20261101,828,0020.60
Feb 20261261,856,6470.68
Mar 20261221,850,7110.66
Apr 20261371,728,8860.79
May 20261291,821,5090.71
Jun 20261451,909,4960.76
Jul 20261501,815,1800.83
Aug 20261341,835,6980.73

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

HART showed up in job posts at 82 companies for the first time from June to August 2026, and 73 in the three months before. That brings the companies naming it for the first time since October 2025 to 246, through August 2026.
March to May 2026 73
June to August 2026 82
October 2025 to August 2026 246

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 HART?

1,283 companies name HART in job posts they wrote; employees' profiles add 7,733 more. 306 show up in both job posts and employees' profiles.
How we know Companies Share
Job posts name HART
1,283 14%
Employees' profiles list HART
7,733 86%

9,016 companies. Each is counted once, under the strongest evidence we have for it.

What size are the companies that use HART?

Companies with 50 to 999 employees stand out among HART users: 47%, against 38% on the typical tech page. 2,185 of its companies have fewer than 50 employees.

Share of its companies Typical tech page

ShareTypical
Under 50 employees
24% 22%
50 to 999
47% 38%
1,000 to 5,000
17% 17%
Over 5,000
12% 23%

Where are HART companies based?

Belgium is 6.5 times as common among HART companies as on the typical tech page, at 5.2%. The Netherlands leads overall with 34%. Its companies are based in 117 countries and territories.
ShareTypical
The Netherlands
34% 2%
United States
24% 43%
Belgium
5.2% 0.8%
United Kingdom
4.8% 6.4%
India
3.6% 6.9%
Canada
3.5% 3.6%

Companies in 117 countries and territories. Shares are of companies with a known headquarters country.

Show the data
CountryCompaniesShareTypical tech page
The Netherlands2,97434%2%
United States2,07324%43%
Belgium4545.2%0.8%
United Kingdom4204.8%6.4%
India3143.6%6.9%
Canada3013.5%3.6%

Which teams work with HART?

HART work is spread across teams. Maintenance leads, at 25 companies. Engineering teams are second, at 16 companies, and R&D teams third, at 13.
Team Companies
Maintenance
25
Engineering
16
R&D
13
Automation
9
Instrumentation & controls
5
Operations
5

What else do HART companies use?

Compared with companies of the same size, HART companies stand out for using Foundation Fieldbus and Foxboro. Among the tools listed here, DeltaV is the most widely used, at 24% of HART companies.

Share of the 941 HART companies counted here whose job posts also name the tool Typical for companies the same size

Tool Also name it Typical Times as common
Foundation Fieldbus 168 companies
18% 0.18% 100x
Foxboro 69 companies
7.3% 0.18% 40x
DeltaV 227 companies
24% 0.77% 31x
CHEMCAD 50 companies
5.3% 0.18% 30x
Tool Also name it Typical Times as common
Modbus RTU 62 companies
6.6% 0.23% 28x
Yokogawa 91 companies
9.7% 0.35% 28x
Modicon 100 companies
11% 0.39% 27x
CADWorx 59 companies
6.3% 0.25% 25x

Which companies started naming HART in job posts recently?

Between April and August 2026, 101 companies with 50 or more employees first named HART in a job post, 22 of them with more than 5,000 employees. Smurfit Westrock leads the new enterprise companies, with 5 job posts from April to August.
Commercial 50 to 999 employees · 49 new
Company Posts
TSA - Tecnologia de Sistemas de Automação S/A 3
fairlife 2
Voyager Technologies 2
ALTEN Mexico 2
Blykalla 2
Mid-market 1,000 to 5,000 employees · 30 new
Company Posts
Acwa 3
Equans UK & Ireland 3
SNEF 2
ENOC 2
KAEFER RIP Serviços Industriais 2
Enterprise over 5,000 employees · 22 new
Company Posts
Smurfit Westrock 5
Orano 4
Mota-Engil 4
Givaudan 3
Unilever 2

Companies that named HART 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 HART most?

No single role dominates for HART; Skilled Trades leads with 25% of the job posts. Skilled Trades posts naming it numbered 99 from March to May 2026 and 103 from June to August.
Role Share Posts
Skilled Trades
25% 341
Control Engineer
15% 211
Automation Engineer
6.8% 94
Engineer
5.5% 75
Electrical Engineer
4.4% 61
Systems Engineer
4.4% 61
Show the data
RoleShareOct 2025 to Aug 2026Mar to May 2026Jun to Aug 2026
Skilled Trades25%34199103
Control Engineer15%2116945
Automation Engineer6.8%943324
Engineer5.5%751424
Electrical Engineer4.4%611420
Systems Engineer4.4%61929
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.