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Answering Service Company

JK Development GmbH

Swiss multilingual call center for telemarketing, appointment setting, lead generation and customer care

JK Development GmbH cover

About JK Development GmbH

A call centre in Switzerland that works in seven languages, JK Development GmbH answers phones for other companies day and night and also makes calls on their behalf. The business says it serves Swiss and international clients and divides its work into three: winning customers, looking after them, and keeping the address data behind both accurate.

Customer care around the clock

Inbound work covers taking orders, running a help desk with out of hours cover and operating hotlines for information and complaints. Seven languages are covered (German, English, French, Italian, Greek, Polish and Hungarian), with staff available at all hours, weekends and public holidays included, so a client can serve several time zones. The reasoning is that support and sales go better when a customer gets an explanation or solution in a mother tongue. The help desk supports customers with software, hardware and technical problems, and every fault report is logged and analysed statistically. Back office staff also take over administrative office tasks, and the team is meant to cope with rising call volumes and peaks while staying friendly.

Booking meetings for sales teams

For new customer acquisition the company runs telephone campaigns that set appointments, generate and manage leads and sell by phone. It first analyses potential and need, then calls with staff trained to speak to people at management level. It also handles all the coordination of the appointments it books, planning them cleanly so that a client's sales people spend their time selling and the client's own staff are freed for core business.

Business addresses

As a data specialist, the company supplies Swiss company addresses, including a contact at decision maker level on request, and selects them by industry, size and region. Existing databases can be cleaned, verified and enriched. According to the company, this data is the base on which a successful marketing campaign is built, and it keeps it up to date because firms change address, merge, rename or stop trading every year.

Growing with the client

The company says its services support businesses at every stage of growth and market entry, and that dedicated relationship managers work with clients on more complex selling tasks.

TrustList summary

JK Development GmbH is a multilingual call center based in Switzerland, serving Swiss and international clients. Its work covers customer acquisition, customer care and business address data, carried out mainly by telephone.

What JK Development GmbH does

  • Telemarketing: outbound campaigns that book appointments, generate leads and sell by phone.
  • Help desk and order intake: 24 hour hotline services, order taking and information or complaints lines.
  • Customer care outsourcing: back office and support work carried out in the client's name.
  • Business address data: sales of Swiss company addresses, optionally with contact persons, plus verification and enrichment of a client's own database.
  • Lead management: coordinating appointments and leads so a client's sales staff can focus on selling.

Who it serves

Swiss and international business clients. Addresses can be selected by industry, company size and region.

Key facts

  • Based in: Switzerland
  • Languages: a multilingual team

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

JK Development GmbH is ranked on 1 TrustList ranking at #11.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. JK Development GmbH has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Answering service company · 1 ranking

  • #11of 29
    Marketing

    It is one of 5 here listing outsourcing.

    Its profile: “According to the company, this data is the base on which a successful marketing campaign is built, and it keeps it up to date because firms change address, merge, rename or stop trading every year.”

    Of the 29 here, 8 also cover business services and 7 also cover financial services; 2 also work in Dubai.

    Behind IT MNC Group India, ahead of Konnektors.

As of 2026-11-04. Organic ranks only; sponsored placements are never ranks. How TrustList ranks

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