React Native Software Engineer

Wrocław /
Mobile - Software Engineering /
Tivix is a business unit of Kellton Tech, that is focused on digital product development. 

We're a software consulting company with a 70-people office in Wrocław, headquartered in San Francisco, and with other offices in New York, Portland, London and India. Our team passion manifests itself in every client engagement. Our clients are a mix of new ventures, Fortune 500 brands, and innovative NGO's across a variety of sectors. We work with different technologies and there are a lot of opportunities to learn. 

Would you like to join our rockstar team? 

We do well with people who are smart, take professionalism seriously (but also know how to have fun) and who know how to support their team members while working hard to make clients happy. Everyone is empowered at Tivix and new team members can make a difference right away and progress quickly in responsibility and ownership. 

View our website for more details and case study examples.

Employment form: B2B, in Wrocław or remotely. 

What you'll be doing:

    • build pixel-perfect, buttery smooth UIs across both mobile platforms
    • leverage native APIs for deep integrations with both platforms
    • diagnose and fix bugs and performance bottlenecks for performance that feels native
    • reach out to the open source community to encourage and help implement mission-critical software fixes
    • maintain code and write automated tests to ensure the product is of the highest quality.
    • transition existing React web apps to React Native

Ideally, you have:

    • 2+ years of commercial experience
    • firm grasp of the JavaScript and TypeScript language and its nuances, including ES6+ syntax
    • ability to write clear and comprehensible code, meeting high quality standards
    • rock solid at working with third-party dependencies
    • familiarity with native build tools (Xcode and Android Studio)
    • understanding of REST APIs, the document request model and offline storage
    • familiarity with the mobile application development lifecycle
    • experience with automated testing suites, like Jest and React Native Testing Library
    • experience with common front-end development tools such as Babel, Webpack, NPM, etc.
    • experience with CI/CD pipelines for React Native applications
    • keeping up to date on the latest mobile application best practices
    • experience in solving complex flow and code architecture
    • strong analytical and problem solving skills, ability to troubleshoot issues

Nice-to-Haves (these are good to have, but not required):

    • experience with mobile native languages (Swift, Objective-C, Kotlin, Java) and tools such as XCUITest, Appium, etc.
    • you’ve built something cool on your own, because you enjoy doing what you do
    • open source contributions (ours at


    • offer participation in projects which bring a better tomorrow, for brands like UNICEF, UN, NATO, Zoetis, to name a few
    • welcome you with 1,5K PLN for your new work setup and whatever you want
    • give you the newest MacBook Pro with accessories
    • add an annual bonus to your salary
    • don’t mind when you work from home (and co-fund your internet connection, if needed)
    • offer in-office lunches (eg. sushi, Thai food, etc.), the kitchen full of snacks and drinks, and... home ordered meals if you work remotely
    • care about your professional development (training reimbursement)
    • insure your life and health with personalised insurances
    • offer private healthcare for you and your partner/family 
    • organise thrilling company offsite events
    • reimburse your public transportation expenses if you work from office
    • provide a modern and quiet office (incl. height-adjustable desks and chairs) and a free parking placec
    • contribute to open source software
    • invite you to have fun with our darts, billiards table, table football, and PlayStation4
    • provide English lessons with native speakers and... many more!
Still not sure about applying to us?
Visit our website and our career page for more details and case study examples.

We need three important things from you after you click the "Apply for this job" button below:
➊ a short cover letter (paragraph) describing why this seems like a good fit to you
➋ a link to your GitHub profile (if any)
➌ your LinkedIn profile (if any)

Also, if you put the words "U mnie działa" in your cover letter, it will please us to know that you took the time to read this post and have good attention to detail.

Looking forward to hearing from you!