Callstack was founded in 2016 by Mike Grabowski and Anna Lankauf. Our company provides top cross-platform consultancy & development in React.js and React Native. We co-create the technology and collaborate with the Meta team on shaping the technology as core contributors and innovators.

Our main goal is to drive and accelerate software development innovation. To achieve that, we follow our major rule:

We don’t follow best practices. We set them!

Callstack also organizes React Universe Conf - the only community - driven conference in Europe.

What is unique about working at Callstack?

• You will work with the best React Native experts on applications used by millions worldwide.
• You can develop your own ideas in our R&D program. If you want to bring your visions to life - Callstack will support you.
• You have a possibility to contribute to our projects in Open Source like React Native Paper, Linaria, RN Testing Library etc.
• There are plenty of possibilities to showcase your expertise: You can speak at our React Universe Conf, be featured in our blog, or The React Native Show podcast episode.
• You are the one to decide in which area you want to grow, you’ll have an individual self-development budget to upgrade your soft skills, managing skills or become a Mentor in the future.

Join us and work with the TOP Silicon Valley and Fortune 500 companies in the USA!

As a QA Automation Engineer you will:

• Create and execute suits of automation tests
• Test & write automated testing suites for cross-platform software for our client's project
• Translate business requirements to testing scenarios
• Report bugs and write detailed test reports
• Work on applications used by millions of people worldwide
• Arrive at solutions that bring about concrete benefits for the client
• Collaborate with development teams, CTOs, and PMs from all around the world

You are the right candidate if you have:

• 4+ years of commercial experience in automation testing
• Having strong knowledge of JavaScript (Java will be a plus)
• Experienced with creating test strategies and high-level test approaches for new software product
• Highly experienced with web app testing, manual and automation
• Aware of the software lifecycle and tests used in each phase
• Having strong knowledge of Playwright and other automation frameworks
• Able to create an automation framework for web app testing from scratch
• Experienced with setting up CI/CD environments for testing
• Experienced with leading small QA team
• Fluent in English (B2+)
• Proactive and self-driven

What we offer:

• 24 paid days off & 30 days paid sick leave for B2B contractors
• Fully-covered life insurance
• Private healthcare for you and your family
• Free access to mental health platform - Helping Hand
• Multisport Card or monthly allowance for other sports activities
• Individual self-development budget
• Monthly lunch allowance
• Accounting costs refund for B2B contractors
• Flexible working hours and fully remote work possibility
• Cool office in Wrocław city center
• Magnificent team events and activities
• Company-wide workation and team building workshops
• Top-notch hardware - Apple devices
• Free entry and possibility to participate in React Universe Conf