Senior React Native Developer

Mobile Developer • Senior • Remote • Full-time • Poland

Poland

Callstack is a cross-platform consultancy and development company that works with the Meta team as a core contributor to React Native. They are looking for a Senior React Native Developer to work on client products and contribute to open source projects.

Stack

JavaScript React

Responsibilities

▹Act as a technology consultant for 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 the engineering workflow to improve productivity, code quality, debugging and technical decision-making
▹Collaborate with development teams, CTOs, Project Managers and Product Owners from around the world
▹Contribute to the Open Source community through projects led by the CTO, React Native Core Contributors and Senior Developers
▹Take part in R&D activities exploring the technologies of tomorrow

Requirements

▹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); web development experience is a plus
▹AI-native mindset and practical familiarity with modern AI coding tools such as Codex, Claude Code or Cursor
▹Strong drive towards learning new technologies and knowledge-sharing
▹Ability to quickly gain new technical expertise
▹Fluency in English (min. B2+)
▹Passion for the open source mission
▹Great communication skills and team player attitude
▹Proactive and self-driven approach to work

Nice to have

▹Documented contributions to any open source project

Soft skills

Communication skillsTeam playerProactive and self-drivenKnowledge sharing

What we offer

▹Salary: 21,000 - 35,000 PLN net + VAT (B2B)
▹24 paid days off and 30 days paid sick leave
▹Fully covered life insurance
▹Private healthcare for you and your family
▹Free access to the Helping Hand mental health platform
▹Multisport card or monthly allowance for other sports activities
▹Individual wellbeing and development budget
▹Monthly lunch allowance
▹Accounting costs refund
▹Flexible working hours and fully remote work possibility
▹Office in Wrocław city center
▹Team events and activities
▹Company-wide workation and team building workshops
▹Top-notch hardware (Apple devices)

About the company

Callstack was founded in 2016 and provides cross-platform consultancy and development. It collaborates with the Meta team as a core contributor to React Native, organizes the React Universe Conf, and works with Silicon Valley and Fortune 500 companies.

Languages: Angol: B2+

🛡️ Recently checked

✓ Posted 23 days ago
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Salary range

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Work typeRemote

Location

Poland

TypeJob

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