Senior React Native Developer

Callstack

1d•Remote

About The Position

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 ecosystem conference in Europe. Join us and work with the TOP Silicon Valley and Fortune 500 companies in the USA!

Requirements

A JavaScript expertise with extensive knowledge of modern frameworks and libraries
Experience in React.js and React Native
Strong commercial experience in mobile app development (above 3 years), experience in web development is a plus
AI-native mindset and practical familiarity with modern AI coding tools such as Codex, Claude Code, or Cursor, with the ability to use them effectively in daily software development work
Strong drive towards learning new technologies and knowledge-sharing initiatives
Ability to quickly gain new technical expertise
Fluency in English (min. B2+)
Passion about the open source mission (documented contributions to any open source project would be a huge plus)
Great communication skills and being a team player
Proactive and self-driven approach to work

Nice To Haves

documented contributions to any open source project would be a huge plus

Responsibilities

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
Use AI-assisted development tools as a standard part of your engineering workflow to improve productivity, code quality, debugging, and technical decision-making
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, and being a part of our R&D activities
Simply have fun!