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Senior Software Tester in Madrid


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Job Description

Job Purpose
We are hiring a software tester with experience on Web developments, Javascript technologies and Amazon serverless and cloud architectures, with at least 4 years of experience and a good level of English, written and spoken.


  • The candidate will join to an international and high technical level team, with responsibilities and objectives on a local and global software projects. Key responsibilities include the following:

    • Test the business Web platforms code, detecting and documenting bugs, with the best methodologies.
    • To be involved in the new features according improvements planning and CoStar best practices.
    • Participate in global and international software projects of the Company.


    • Acquire knowledge about the current platform architecture and code.
    • Integrate in the actual and future team, with a high collaborative attitude.
    • Participate in Belbex products improvements and maintenance, from the testing point of view.
    • Participate in global software projects.

    Knowledge, Skills, Experience


    • End-to-end quality assurance for the mobile/desktop applications
    • Test planning and test strategy, including the mobile, web and server components
    • Agile development methodology
    • Good Automation knowledge to develop automation scripts in different OS environment and different browsers for Desktop/Mobile applications
    • Automation tools like Selenium, cucumber, Rest Assured
    • Visual testing knowledge like Applitools
    • Testing in cloud environment like Sauce labs
    • Continuous integration tools like Jenkins
    • Take ownership of the release management process
    • API testing
    • SEO knowledge
    • A good level of spoken and written English
    • Social, responsible and has attention to detail
    • Task and results oriented


    • ISEB certification foundation/Advanced level or equivalent.
    • Experience with micro services architectures testing workflow.
    • Experience with .NET Web applications workflow.
    • Knowledge of Microsoft Team Foundation Server workflow and deployments.

Join CoStar and start your dynamic career with us!

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