QA Engineer

Mailtastic offers a high-performance marketing SaaS solution that enables marketers to turn the most important communication channel in B2B - the personally written 1 1 employee email - into a powerful marketing channel. With our solution, companies position customized content for their desired target group and generate maximum attention for their content, products, and messages.

We are a fast-growing marketing technology start-up based in Mainz, Germany. Founded in 2015, Mailtastic has been part of the international Cognism Group since May 2020 following a successful acquisition with other offices in London, New York, Cape Town, and other cities around the world. In addition to the further development of Mailtastic, we will focus on the Go2Market in other countries in the upcoming months.

Become part of our great, creative team and a leading international group of companies!

Your Tasks...

Your responsibility will be to assess software quality through manual and automated testing and maintain the testing protocols, as well as creating various testing documentation.

You will be balancing the Product documentation with the software requirements and the implementation possibilities of our Dev team. Solid communication skills and the ability to work with different teams/colleagues on projects are essential to this role.

As the successful candidate you should also have a keen eye for detail, be efficient and, well-organized. Flexibility, the ability to multi-task, and self-motivation are crucial, as you will need to anticipate any challenges or changes that may occur in a rapidly expanding start-up.


  • Review requirements, specifications, and technical design to provide feedback
  • Create detailed, well-structured plans and test cases
  • Coordinate, prioritize, and estimate testing activities
  • Develop, design, and execute automation scripts
  • Perform thorough regression testing and keep track of bugs and vulnerabilities
  • Develop and apply testing processes for new and existing products to meet client needs
  • Work together with the software developers to enhance and improve app


  • At least 2 years of experience in in software development and software quality assurance
  • Strong knowledge of software QA methodologies, tools and processes
  • Strong skills in HTML, CSS, Javascript, MySql (preferable), C++, XML
  • Exceptional attention to detail
  • Good time-management skills
  • You enjoy communicating with people and are a good team player


  • Varied and challenging tasks in an experienced developer team
  • Competitive salaries
  • Software Development with the latest technologies
  • Very good career opportunities in a constantly growing team
  • Flexible working hours (flexitime with core working hours)
  • Relaxed start-up working atmosphere with flat hierarchies and short decision-making processes
  • Home Office possibilities
  • The chance to grow with us and play a leading role in our success story
Cognism is the world’s leading all-in-one globally compliant prospecting solution. Powered by patented AI technology, it provides organisations with compliant B2B data and a suite of sales acceleration tools to help action it. Cognism enables its worldwide business customers to find and deliver new revenue, faster.