Sii Poland
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React Native Developer
role at
Sii Poland .
We are a team of technology enthusiasts who create cutting‑edge mobile applications with global reach. We work on projects that have a real impact on users — from fintech, to e-commerce, to social media applications. Due to the growth of our team, we are looking for an experienced Senior React Native Developer who will bring to the project not only technical knowledge, but also initiative, good communication and willingness to mentor younger team members.
Your tasks
Creation and development of mobile applications in React Native (iOS + Android)
Design and implementation of application architecture
Integration with REST / GraphQL API
Optimizing the application for performance and UX
Conducting code review and technical support for the team
Collaborating with the backend team, UI/UX and Product Owner
Requirements
Minimum of 4 years of experience in mobile application development, including 3 years of experience with React Native
Proficiency in JavaScript / TypeScript
Familiarity with Redux / Zustand / React Query or other libraries for state management and API communication
Experience with native modules and bridges (Android/iOS)
Practical knowledge of CI/CD, testing (e.g. Jest, Detox), debugging and optimization
Communicative knowledge of English
Fluent knowledge of Polish language required
Residence in Poland required
Nice to have
Knowledge of native technologies (Java/Kotlin, Swift/Obj-C)
Experience with publishing applications to Google Play / App Store
Previous work with tools like Firebase, App Center, Sentry
Ability to provide technical mentoring and participate in recruitments
Job no. 251208-0LM4I
Benefits For You
Great Place to Work
Solid financial situation
Contracts with the biggest brands
Centre of internal trainings
Many experts you can learn from
Open and accessible management team
Profit sharing
Passion Sponsorship program
Regular integration events and trips
Comfortable and well‑equipped offices
MySii app
Medical care
Seniority Level Mid‑Senior level
Employment type Full‑time
Job function Engineering and Information Technology
Industries IT Services and IT Consulting
Referrals increase your chances of interviewing at Sii Poland by 2x.
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React Native Developer
role at
Sii Poland .
We are a team of technology enthusiasts who create cutting‑edge mobile applications with global reach. We work on projects that have a real impact on users — from fintech, to e-commerce, to social media applications. Due to the growth of our team, we are looking for an experienced Senior React Native Developer who will bring to the project not only technical knowledge, but also initiative, good communication and willingness to mentor younger team members.
Your tasks
Creation and development of mobile applications in React Native (iOS + Android)
Design and implementation of application architecture
Integration with REST / GraphQL API
Optimizing the application for performance and UX
Conducting code review and technical support for the team
Collaborating with the backend team, UI/UX and Product Owner
Requirements
Minimum of 4 years of experience in mobile application development, including 3 years of experience with React Native
Proficiency in JavaScript / TypeScript
Familiarity with Redux / Zustand / React Query or other libraries for state management and API communication
Experience with native modules and bridges (Android/iOS)
Practical knowledge of CI/CD, testing (e.g. Jest, Detox), debugging and optimization
Communicative knowledge of English
Fluent knowledge of Polish language required
Residence in Poland required
Nice to have
Knowledge of native technologies (Java/Kotlin, Swift/Obj-C)
Experience with publishing applications to Google Play / App Store
Previous work with tools like Firebase, App Center, Sentry
Ability to provide technical mentoring and participate in recruitments
Job no. 251208-0LM4I
Benefits For You
Great Place to Work
Solid financial situation
Contracts with the biggest brands
Centre of internal trainings
Many experts you can learn from
Open and accessible management team
Profit sharing
Passion Sponsorship program
Regular integration events and trips
Comfortable and well‑equipped offices
MySii app
Medical care
Seniority Level Mid‑Senior level
Employment type Full‑time
Job function Engineering and Information Technology
Industries IT Services and IT Consulting
Referrals increase your chances of interviewing at Sii Poland by 2x.
We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
#J-18808-Ljbffr