Plumbers are hired by developers, residential associations, hotels and retail chains. The CV needs to show calls per week, the kinds of complex jobs you can run solo and the brands of boilers or water heaters you are certified to install. This template lays that out cleanly with concrete numbers in every bullet.
Copy these as starting points and swap in your own numbers.
2024–2025 estimates. Wide ranges by experience and seniority.
For official gas hookups, yes. Without Vaillant, Bosch or Viessmann authorization the manufacturer warranty is void. Customers pay a premium for certified installers because their cover depends on it.
List sites, system types, meters of pipe and number of boiler rooms commissioned. Independent contracting in residential is the norm. Add 2 or 3 client references.
Tickets are larger but paperwork and pressure-test discipline are stricter. Hotels and malls bring year-round work, residential tends to be seasonal.
Use calls per week or sites per quarter. For boiler work, count commissioned units. For emergency callouts, add average arrival time, that is the strongest signal for hiring managers.