Senior Software Test Engineer

Permanent employee, Full-time · Budapest

Your mission

Are you an experienced software tester, ready to take the next step in your career?

You like exciting projects and working as a core member of an international team?

Are you interested in the telecommunications industry?

As a member of our team you will participate in manual and automated testing, validating, specifying and documenting of the IT and telecommunication systems produced and operated by our company. You will take an active part in test planning, test case development. You will work close with other team members: software developers, product owners, IT guys and external partners.

Your profile

Major responsibilities and tasks

  • Managing the design, implementation and execution of functional and non-functional tests.
  • Support Integration and Regression testing.
  • Maintain test environments and participate in CI/CD related activities.
  • Executing the manual & automated tests in the short term and automate the manual tests in the medium term.
  • Analyzing test results on database impacts, errors or bugs, and usability.
  • Preparing test documentation.
  • Validating specifications and setup guides.
  • Taking active part in test planning, test case development. 
  • Working closely with other team members: architects, product owners, software developers, IT and external partners.

Required qualifications and skills

  • at least 3+ year experience as a software tester
  • experience in non-functional testing (Performance, Security)
  • strong experience in troubleshooting 
  • strong knowledge and experience in automated testing (not only UI Automation but API as well)
  • strong analytical, engineering, and technology skills that include practical application, techniques, and principles.
  • knowledge of test methods 
  • high level expertise in using test management software.
  • independent problem-solving skills and product focused way of thinking 
  • good command of English


  • Microsoft technologies (Windows infrastructure, IIS)
  • Database basics (SQL/MSSQL)
  • API Testing Tool (e.g.: Postman, SoapUI)



  • BSc, MSc or higher level in Computer Science
  • Programming basics (C#/.NET)
  • Atlassian JIRA/Confluence
  • Robotframework
  • Linux knowledge
  • VOIP
  • ISTQB certification (any level)
  • Non-Functional Testing tool (e.g.: JMeter)
  • Experience in mobile application testing


Why us?

We are offering

  • professional challenges, inspiring, diverse tasks
  • structured development process
  • learning path on new technologies (AI, LLM)
  • multiculture environment
  • flexible working hours and home office days
  • relaxed atmosphere, steady, supportive international team
  • easily accessible modern office with good infrastructure
  • complimentary coffee, fruits and snacks 
About us
Telio is a medium-sized, internationally active, rapidly growing company in the field of telecommunications and IT services in the prison sector. As the European market leader, we have been providing communications solutions for prisons and their inmates worldwide for 25 years. With more than 270 employees, we are active in 25 countries and develop, install and operate communication and media systems that make an important contribution to resocialization in prisons as well as in correctional facilities.
We are looking forward to hearing from you!
Thank you for your interest in Telio. Please fill out the following short form. Should you have difficulties with the upload of your data, please send an email to
Uploading document. Please wait.
Please add all mandatory information with a * to send your application.