Company · Calibration & metrology

ZERA_

As of 3 November 2026, ZERA has 3 open roles (0 new in 30 days), its manufacturing and production team is hiring most, and its postings name dlms cosem, M-Bus and CMake as the tools the team works in.

As of 3 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Königswinter, Germany51-200 employees10M-50M revenue, est.B2Bzera.de ↗LinkedIn ↗
Headquarters
Königswinter, Nordrhein-Westfalen, Germany
Employees
51-200 employees (linkedin)
Sells to
power utility companies, e-mobility operators, electrical engineering firms
Certifications on site
iso_14001, iso_45001, ISO 9001, tuv
Site languages
EN, DE, FR, ES, ZH, RU, AR, HI, BN, TE, MR, TA, GU, UR, KN, ML, PA, SW
Career system
Ownsite_html
3open roles · 0 new in 30 days
11tools named in postings
hiring locations
0change signals read in postings
02 — What they do, whom they sell to, who else does it

ZERA in one screen

Read from zera.de: what the company does, the customers it names, the buyers we can actually see, and the companies that sell the same thing.

What ZERA does

ZERA is a precision testing and measurement company that develops and supplies meter testing technology, e-mobility testing systems, and instrument transformer and switchgear testing equipment. Its offerings include portable test meters and sources, complete AC and DC test systems, EV charging station analyzers and simulators, and current and voltage transformer testing components. The company also provides calibration, repair, and training services.

portable test meters and sourcescomplete AC and DC test systemsEV charging station analyzer and simulatorcurrent and voltage transformer testingcustomer service and training
Whom it sells to

Named on the site: power utility companies, e-mobility operators, electrical engineering firms.

Who else sells this

Nearest companies by what they do, sell and whom they serve, 51+ employees. 576 scored.

MTEUnited States · 51-200 employeesIGEMAGermany · 51-200 employeesNZRGermany · 51-200 employeesFrerItaly · 51-200 employeesammeter-recorder.comUnited States · 51-200 employeesGreenvoraUnited States · 51-200 employees
03 — Tech stack, with the evidence

What ZERA says it runs

Tools named in the company's own postings as the team's systems, with the sentence that says so. What the website and DNS show is listed separately.

dlms cosem · high confidence · 1 posting
• Meter communication (SML, DLMS/COSEM, HDLC, M-Bus, Wireless M-Bus)
Employee Service Specialist with a focus on IT / Meter Expert (m/f/d) · first seen 2026-10-26
M-Bus · high confidence · 1 posting
• Meter communication (SML, DLMS/COSEM, HDLC, M-Bus, Wireless M-Bus)
Employee Service Specialist with a focus on IT / Meter Expert (m/f/d) · first seen 2026-10-26
CMakeSoftware engineering · medium confidence · 1 posting
• Qt, QML, QTest and CMake
Software Engineer (m/f/d) from Microcontrollers to Embedded Linux – Full-time · first seen 2026-10-26
GitSoftware engineering · medium confidence · 1 posting
• Git and GitHub Workflows
Software Engineer (m/f/d) from Microcontrollers to Embedded Linux – Full-time · first seen 2026-10-26
GitHubSoftware engineering · medium confidence · 1 posting
• Git and GitHub Workflows
Software Engineer (m/f/d) from Microcontrollers to Embedded Linux – Full-time · first seen 2026-10-26
Linux · medium confidence · 1 posting
• Good Linux knowledge
Employee Service Specialist with a focus on IT / Meter Expert (m/f/d) · first seen 2026-10-26
QMLSoftware engineering · medium confidence · 1 posting
• Qt, QML, QTest and CMake
Software Engineer (m/f/d) from Microcontrollers to Embedded Linux – Full-time · first seen 2026-10-26
QtSoftware engineering · medium confidence · 1 posting
• Qt, QML, QTest and CMake
Software Engineer (m/f/d) from Microcontrollers to Embedded Linux – Full-time · first seen 2026-10-26
qTestSoftware engineering · medium confidence · 1 posting
• Qt, QML, QTest and CMake
Software Engineer (m/f/d) from Microcontrollers to Embedded Linux – Full-time · first seen 2026-10-26
C# · low confidence · 1 posting
• Programming experience (e.g., C#, Java, VBS or similar) is an advantage.
Employee Service Specialist with a focus on IT / Meter Expert (m/f/d) · first seen 2026-10-26
Java · low confidence · 1 posting
• Programming experience (e.g., C#, Java, VBS or similar) is an advantage.
Employee Service Specialist with a focus on IT / Meter Expert (m/f/d) · first seen 2026-10-26
On the website or in DNS

Vendors whose code loads on zera.de or whose records sit in its DNS. Page plumbing (libraries, fonts, consent banners) is left out.

Microsoft 365seen on zera.de
swisssignseen on zera.de
04 — Hiring

3 open roles, 0 opened in 90 days

Read hourly from the company's career system. Open roles and new roles in the last 30 days, by team. Companies hiring manufacturing and production in Germany →

05 — Signals

What is changing, read from the postings

Intents are events the employer states about itself, each with the sentence and the posting it came from.

No change signals read in the current postings.

Decision makers at ZERA, with verified e-mails, and every change the moment it is posted.

Sales, marketing and IT leaders by function. Add ZERA to a monitor and get a webhook when a role opens, a tool appears or a signal is read.

Free plan: 1,000 records, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

06 — Lookalikes

Companies like ZERA

Nearest by what they do, what they sell and whom they sell to, 51+ employees. 6 of 576 scored.

MTEElectrical equipment manufacturers · United States51-200 employees
IGEMASensor instrument manufacturers · Germany51-200 employees
NZRSensor instrument manufacturers · Germany51-200 employees
FrerElectrical equipment manufacturers · Italy51-200 employees
ammeter-recorder.comElectrical equipment manufacturers · United States51-200 employees
GreenvoraEV charging equipment · United States51-200 employees
07 — Profile

From the company's own website

Legal nameZERA GmbH
IndustryBusiness & finance services · Calibration & metrology
Offeringsportable test meters and sources · complete AC and DC test systems · EV charging station analyzer and simulator · current and voltage transformer testing · customer service and training
Target customerspower utility companies · e-mobility operators · electrical engineering firms
Geographic scopeinternational · also United States
Reviews found
Public contact points2 role addresses · 1 phone numbers
Pages readprivacy, team, home, imprint, contact, careers, about, services, certifications
Datescrawled 2026-08-02 · profiled 2026-08-15 · hiring built 2026-10-27
Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

ZERA (Königswinter, Germany, 51-200 employees) has 3 open roles, 0 new in 30 days, and names 11 tools in its postings. (Breaknorm, 3 November 2026, https://breaknorm.co/company/zera.de)
How we know

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 →

  • ProfileBuilt from zera.de: summary, offerings, customers, certifications and contact points are extracted from its pages, with a confidence score per field.
  • HiringRead hourly from the company's Ownsite_html career site; reposts collapse into one record.
  • Tech stackTools the employer's own text names as the team's systems, with the quote; website scripts counted separately.
  • HeadcountLinkedIn where known, otherwise estimated from the site.
FAQ

ZERA: questions

Does ZERA use dlms cosem?

Yes, by the company's own words: 1 posting name it, first seen 2026-10-26, in the team.

Is ZERA hiring?

3 open roles as of 3 November 2026, 0 opened in the last 30 days and 0 closed. The largest team hiring is manufacturing and production.

Where does this profile come from?

From zera.de itself: we crawled it on 2026-08-02, built the profile on 2026-08-15, and read its career site (Ownsite_html) hourly since. Headcount is from LinkedIn.

Who should I write to at ZERA?

The people are behind the login: decision makers by function, verified at the mail server when you open them. 2 public role addresses from the site are there too.

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