Senior react native developer @ callstack

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 and fully dedicated to React Native 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!

Why work with us? Because you can :

Realize your potential in our R& D program

Work on software used by millions

Take part in our Open Source projects

Grow in your unique expert role

Code with the top experts and community leaders

Showcase your expertise by speaking at our conference, being featured in our blog or podcast episode

Co-create and shape core technology

Join the React Native community

Develop soft skills

What we offer :

24 paid days off & 30 days paid sick leave for B2 B 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 Wellbeing & Development Budget

Monthly lunch allowance

Accounting costs refund for B2 B 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

Possibility to participate in React Universe Conf

You are the right candidate if you are :

A Java Script expert with extensive knowledge and expertise in modern frameworks and libraries

Skilled in and enthusiastic about React.js and React Native

Experienced in web or mobile app development (3+ years)

Driven towards learning new technologies and knowledge-sharing initiatives

Able to quickly gain new technical expertise

Fluent in English (B2+)

Passionate about the open source mission (documented contributions to any open source project would be a huge plus)

A great communicator and team player

Proactive and self-driven

Fun to work with : )

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 and fully dedicated to React Native 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!

Why work with us? Because you can :

Realize your potential in our R& D program

Work on software used by millions

Take part in our Open Source projects

Grow in your unique expert role

Code with the top experts and community leaders

Showcase your expertise by speaking at our conference, being featured in our blog or podcast episode

Co-create and shape core technology

Join the React Native community

Develop soft skills

What we offer :

24 paid days off & 30 days paid sick leave for B2 B 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 Wellbeing & Development Budget

Monthly lunch allowance

Accounting costs refund for B2 B 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

Possibility to participate in React Universe Conf

,(Act as a technology consultant for our clients and help them build great products for multiple platforms, Drive the development process by providing expertise in cross-platform technologies and solving the most complex programming issues, Collaborate with development teams, CTOs, Project Managers, and Product Owners from all around the world, Have multiple possibilities to contribute to the Open Source community by working on projects led by our CTO, React Native Core Contributors, and our Senior Developers, Be one step ahead exploring technologies of tomorrow, being a part of our R&D activities, Simply have fun!) Requirements : Java Script, React, React native, Open source Tools : . Additionally : Sport subscription, Training budget, Private healthcare, Flat structure, Lunch card, International projects, Fully-covered life insurance, Free access to mental health platform, 24 paid days off, 30 days paid sick leave for B2 B contractors, Free coffee, Shower, Playroom, Modern office, Startup atmosphere, Bike parking, Free snacks, Free beverages, In-house trainings, No dress code.