(Senior) Quality Assurance Engineer (m/f/d)

About us

Join the European market leader in B2B cloud telephony. NFON founded in 2007 in Germany is offering its services, locally, in 15 European countries. Our business: Transform the business phone industry, thanks to our advanced cloud-based phone system, complete business phone and call center software.

 The opportunities are endless: If you are ready to grow something big, then this is your job!

Your Mission

NFON transforms and enriches how businesses use telephony. We deliver the freedom of business communication through cloud-based technology. Quick to deploy, versatile, scalable, flexible and reliable – just like our team. Our R&D and Operations team consists of technical experts who work to bring the business communication market to the next level.
We are no. 1 cloud telephone system in Europe.

You will be improving the quality of our software and our QA processes, starting with the administration portals. This includes:
  • Assuring functional and non-functional quality requirements for various frontend applications
  • Prevention of early stage implementation issues by having a close collaboration with developers
  • Responsibility for design, maintenance, execution and evaluation of tests
  • Automating test cases for improving regression coverage and safety/reliability
  • Execution of various manual tests with changing requirements
  • Configuration and maintenance of test environments and devices
  • Functional analysis, processing and documentation of problem statements

Your profile

  • A degree (BA+) in computer science or a completed relating apprenticeship with according professional experience
  • Solid experience in testing frontend applications (web)
  • Working experience with implementing QA measures in agile IT organizations and the integration with CI/CD tools
  • Experience in security and/or performance testing (are desirable)
  • Qualifications in the area of software testing (are beneficial)
  • Experience with the Atlassian suite (are beneficial)
  • Experience in real-time communication (audio/video) is a plus
  • Fluent in English, German is a plus

Your Team

As an engineer at NFON, you will be part of the new R&D team  in Lisbon, working alongside the organization in a cross-functional agile team, always growing and helping to build and improve the quality of our products.

Why us?


  • An unlimited fixed-term contract with the flexibility of trust-based working hours
  • Funding of educational trainings, including English courses
  • Cozy and large workplaces with modern equipment and cordial colleagues 
  • One of the best health Insurance with great coverage (including family members)
  • Additional vacation days
  • Free coffee, fruit baskets and lunch vouchers
  • International atmosphere in a continuously growing company with an open-minded culture and positive communication
  • A motivated, distributed and agile team with lean hierarchies

NFON is an equal opportunity employer and does not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, gender identity, age, marital status, veteran status, or disability status.