React Native Developer

🏢 Summary: Long-term B2B contract for an experienced React Native Developer to integrate React Native into an existing native mobile platform within the banking sector. The role focuses on hybrid mobile architecture, combining React Native with iOS and Android applications in a brownfield environment. Work in a hybrid model with involvement in architectural decisions and platform evolution. 🗂️ Requirements: Strong experience with React Native, Experience in native mobile development (iOS or Android), Proven integration of React Native into existing native applications, Ability to design hybrid mobile architecture, Experience with Angular 📃 Skills: ReactNative, iOS, Android, Angular, React 🏢 Description: Industry: banking Rate: up to 160 pln/h net + VAT, B2B Location: Warsaw - hybrid (2 days in the office per week) Long-term cooperation Introduction & Summary We are seeking experienced React Native Developers to assist with a brownfield project focused on integrating React Native into our existing native mobile platform. Main Responsibilities Design and implement solutions that combine React Native with existing native (iOS/Android) applications. Define and drive architectural decisions for hybrid mobile development. Collaborate with teams to ensure smooth integration and optimal performance. Support the evolution of the current mobile platform using a scalable approach. Key Requirements Strong experience with React Native. Solid background in native mobile development (iOS and/or Android). Proven experience in integrating React Native into existing native applications. Strong architectural and problem-solving skills. Experience with Angular. English - minimum B2. Nice to Have Experience with brownfield projects.

🏢 Summary: The role focuses on integrating React Native solutions into an existing native iOS/Android mobile platform, designing architecture and implementing hybrid modules within a mature codebase. The position involves bridging React Native and native layers, optimizing performance, and contributing to scalable, maintainable mobile architecture. 🗂️ Requirements: Strong commercial experience with React Native, Experience in native mobile development (iOS and/or Android), Understanding of mobile application architecture, Experience integrating React Native with native applications, Ability to implement cross-layer communication and bridging, Experience with navigation and state management, Familiarity with CI/CD processes and build tools, Focus on code quality and performance optimization 📃 Skills: React, ReactNative, JavaScript, TypeScript, iOS, Android, Swift, Kotlin, Objective-C, Java, CI/CD, Git, Xcode, Gradle 🏢 Description: We are looking for an experienced React Native Developer to support the integration of React Native solutions into an existing native mobile platform (iOS/Android). Responsibilities: Designing and implementing an architectural approach to combine React Native components with the native application Analyzing the current mobile architecture and identifying optimal integration points Implementing and developing React Native modules within the existing native codebase Ensuring scalability, performance, and maintainability of the solution Handling communication between native and React Native layers (data flow, bridging) Contributing to and optimizing build/deployment processes Maintaining high code quality and alignment with platform standards Close collaboration with iOS and Android teams to ensure smooth integration of new features Requirements: Strong knowledge of React Native with proven commercial experience Experience in native mobile development (iOS and/or Android) Solid understanding of mobile application architecture Experience integrating hybrid solutions with native applications Ability to work with navigation, state management, and cross-layer communication Familiarity with CI/CD processes and build tools Strong focus on code quality, performance, and readability Good teamwork and communication skills Nice to have: Experience working with large, existing mobile systems Knowledge of mobile performance optimization best practices Experience working in Agile environments We offer: Opportunity to work on a modern mobile platform Collaboration with an experienced development team Real impact on architecture and product direction Flexible working conditions

🏢 Summary: Long-term remote B2B contract for a Senior React Native Developer to build and scale a greenfield mobile application for iOS and Android from scratch. The role focuses on delivering a high-traffic, content-driven app with personalisation, real-time engagement features, and scalable architecture. Strong ownership and direct collaboration with international product teams are expected. 🗂️ Requirements: 5+ years commercial experience with React Native, Experience building production mobile apps from scratch, Experience with iOS and Android platforms, Experience with REST API integrations, Experience with CMS or DAM integrations, Experience implementing push notifications, Experience implementing deep linking, Experience with analytics and event tracking, Experience with performance optimisation, Experience with A/B testing or personalisation platforms, Experience with App Store and Google Play release processes, Experience with unit or component testing, English level C1+, Availability before Q3 start, Ability to work on B2B contract 📃 Skills: React, ReactNative, JavaScript, TypeScript, iOS, Android, REST, CMS, DAM, Firebase, Amplitude, Analytics, A/B, Testing, Push, DeepLinking, Node.js, Next.js, Mapbox, GoogleMaps 🏢 Description: Senior React Native Developer (iOS & Android) We are looking for an experienced Senior Mobile Developer (React Native) to join a long-term international project for a premium luxury retail brand. You will work on a completely new mobile product built from scratch for both iOS and Android, serving 250k+ daily users from launch. The project focuses on creating a modern, content-driven mobile experience with personalised feeds, exclusive offers, and real-time customer engagement features. This is a greenfield project with no legacy code and strong ownership opportunities from day one. Project Details 100% Remote Full-time (40h/week) B2B contract Rate: 100 - 125 PLN/h net Long-term cooperation (9 months + possible extension) Start: ASAP / Q3 Required overlap: 14:00–18:00 CET Occasional travel: max once per quarter English: C1+ required Responsibilities Building and maintaining a React Native mobile application for iOS and Android Designing scalable mobile architecture from scratch Integrating CMS, APIs, personalisation and experimentation platforms Implementing push notifications, deep linking and campaign flows Optimising app performance for high-traffic environments Collaborating directly with an international client and product teams Ensuring code quality through testing and best engineering practices Must-Have Requirements 5+ years of commercial React Native experience Strong experience with both iOS and Android applications Experience delivering production mobile apps from scratch Hands-on experience with: REST API integrations CMS / DAM integrations Push notifications Deep linking Analytics & event tracking Performance optimisation A/B testing or personalisation platforms Experience with App Store & Google Play release processes Good testing practices (unit/component testing) English level C1+ (spoken and written) Nice to Have Firebase / Amplitude Feature flagging & experimentation platforms Headless CMS in retail or e-commerce Streaming APIs AI-assisted features GDPR / consent management tooling Google Maps / Mapbox E2E testing Node.js / React / Next.js Polish language skills Important Please apply only if: you are available before the Q3 project start, you have commercial React Native experience for both iOS and Android, you can work on a B2B basis (Polish entity preferred). Recruitment Process CV review & pre-screening Technical interview Client interview (in English) Offer If you’re interested, send: your CV in English, your availability, expected hourly rate (B2B, net PLN), short information about your experience with React Native and CMS/personalisation integrations.

🏢 Summary: Development of a cross-platform mobile application in React Native for iOS and Android integrated with IoT devices and cloud backends. The role focuses on building, integrating, and optimizing a scalable mobile app with device control, data synchronization, and secure communication. It includes testing, CI/CD automation, and performance optimization in a multi-brand, multi-language environment. 🗂️ Requirements: Minimum 4 years of experience in React Native, Minimum 5 years of experience in frontend development, Strong knowledge of cross-platform mobile development for iOS and Android, Experience integrating mobile apps with IoT devices, Experience with cloud backend integration and microservices, Experience with push notifications and data synchronization, Knowledge of mobile testing and test automation, Experience with CI/CD pipelines, Knowledge of mobile app security and data encryption, Experience with performance optimization of mobile applications, English level B2 minimum, Availability to work from office in Katowice once per week 📃 Skills: React, ReactNative, JavaScript, TypeScript, HTML, CSS, Redux, MobX, ReactNavigation, GraphQL, IoT, Microservices, CI/CD, Bitrise, GitHubActions, Fastlane, Testing, Automation, Encryption, Authentication 🏢 Description: Development of a cross-platform mobile application (iOS + Android) in React Native for end-users, integrating with the company's IoT devices. Our expectations Minimum 4 years of experience in React Native and 5+ years in general frontend development (JavaScript/TypeScript, HTML, CSS). Strong proficiency in React Native, including best practices for cross-platform mobile application development (iOS + Android). Experience in integrating mobile applications with IoT devices, including: Reading device parameters (temperature, operating modes, energy consumption, historical data). Controlling devices via the app (schedules, power on/off, operating mode settings). Data synchronization with cloud backends and handling push notifications. Ability to work with backends, microservices, and IoT platforms, including the implementation of business logic and network communication. Experience with multi-brand and multi-language applications, scalable across different markets. Knowledge of mobile and integration testing, test automation, and CI/CD (e.g., Bitrise, GitHub Actions, Fastlane). Familiarity with mobile application monitoring and debugging tools. Ability to ensure application and communication security (user authentication, data encryption, securing communication channels between the app, device, and cloud). Application performance optimization: startup time, bundle size, responsiveness, offline mode support, and connectivity issue handling. English min. B2 level Ready to work from the office in Katowice 1x/week (the team meets on Wednesday) Welcome Skills Proficiency in TypeScript, Redux / MobX, React Navigation, and GraphQL. Experience working with applications requiring high scalability and integration with cloud platforms. Knowledge of UX/UI principles specifically for mobile applications. Experience in migrating existing applications to React Native or modernizing the technology stack. Knowledge of security standards for mobile and IoT applications.

🏢 Summary: The role involves developing a React Native mobile application for smart energy management, integrating IoT devices and analytics features. You will build high-performance UI components, enable secure communication with HVAC hardware, and implement data visualization modules while collaborating on Azure-based REST APIs. 🗂️ Requirements: 5+ years of commercial experience with React Native, Experience building mobile UI components and application architecture, Knowledge of secure communication between mobile apps and IoT/hardware systems, Experience with REST API integration and JSON data handling, Ability to optimize mobile app performance and troubleshoot bottlenecks, Fluency in English, Residing in Poland 📃 Skills: React, ReactNative, JavaScript, TypeScript, REST, JSON, Azure, IoT, HVAC 🏢 Description: We are looking for a React Native Developer to join a project for a global energy‑tech leader. You will help build a mobile application that supports smart energy management in homes and commercial spaces. The role connects mobile development, IoT, and modern analytics features Your tasks Develop high‑performance, reusable UI components for mobile apps using React Native Implement secure and low‑latency communication between mobile devices and HVAC hardware Build data visualization modules for energy usage, savings, and indoor air quality insights Collaborate with backend developers to define and consume RESTful APIs hosted on Azure Diagnose and resolve performance issues in complex, data‑heavy scenarios Requirements At least 5 years of experience working with React Native in commercial projects Strong skills in building mobile UI components and app architecture Good understanding of secure communication between mobile apps and hardware/IoT systems Ability to work with API integrations and JSON data handling Experience optimizing app performance and troubleshooting bottlenecks Fluency in English Residing in Poland required

🏢 Summary: Development role focused on integrating React Native into an existing native mobile application (iOS and Android). The position involves designing and implementing hybrid architecture, enabling efficient communication between native layers and React Native components. You will drive architectural decisions to ensure performance, scalability, and stability of the mobile system. 🗂️ Requirements: Very good knowledge of React Native, Experience in native iOS development (Swift or Objective-C) and/or Android (Kotlin or Java), Experience integrating React Native with native mobile applications, Knowledge of mobile application architecture, Experience with native-to-React Native communication (bridge, native modules), Knowledge of state management and data flow, Experience with CI/CD pipelines for mobile applications, Experience working with cross-platform mobile teams 📃 Skills: React, ReactNative, Swift, Objective-C, Kotlin, Java, iOS, Android, CI/CD, Bridge, NativeModules, Architecture 🏢 Description: 🚀 O projekcie Dołączysz do projektu rozwoju istniejącej aplikacji mobilnej, w którym kluczowym celem jest integracja technologii React Native z natywną platformą (iOS i Android). Będziesz projektować i wdrażać rozwiązania łączące natywny kod i komponenty React Native, dbając o jakość, skalowalność oraz stabilność aplikacji. 🎯 Twoja rola Projektowanie architektury integracji React Native z aplikacją natywną Identyfikacja punktów integracji między warstwą native i React Native Implementacja i optymalizacja komunikacji między warstwami (native ↔ React Native) Współpraca z zespołami iOS i Android przy wdrażaniu rozwiązań Zapewnienie wysokiej wydajności i stabilności aplikacji Tworzenie standardów i dobrych praktyk dla hybrydowej architektury mobile Udział w decyzjach technologicznych i architektonicznych 🛠️ Wymagania (must-have) Bardzo dobra znajomość React Native Doświadczenie w rozwoju aplikacji natywnych iOS (Swift/Objective-C) oraz/lub Android (Kotlin/Java) Doświadczenie w integracji React Native z aplikacją natywną (hybrydowe aplikacje) Znajomość architektury aplikacji mobilnych Doświadczenie z komunikacją między warstwami (bridge, native modules) Znajomość zarządzania stanem i przepływem danych Doświadczenie w systemach build (CI/CD) dla aplikacji mobilnych Umiejętność współpracy z zespołami cross-platform (iOS, Android, backend) ⭐ Mile widziane Doświadczenie w projektowaniu architektury (np. modularization, micro-frontends mobile) Znajomość narzędzi CI/CD dla aplikacji mobilnych Doświadczenie z optymalizacją wydajności w React Native Praca przy dużych, skalowalnych aplikacjach mobilnych Doświadczenie konsultingowe lub rola Tech Lead / Architekt 🤝 Oczekiwane kompetencje miękkie Umiejętność współpracy z różnymi zespołami (iOS, Android, backend) Komunikacja techniczna i tłumaczenie rozwiązań architektonicznych Proaktywność i inicjatywa Myślenie systemowe i analityczne 💡 Co oferujemy Realny wpływ na architekturę produktu Praca przy złożonym systemie mobilnym (React Native + natywne technologie) Współpraca z doświadczonym zespołem Praca w trybie hybrydowym (2 dni w tygodniu w biurze w Warszawie) Forma współpracy: B2B Stawka: 130-150 PLN/h netto

🏢 Summary: The offer is for a React Native Developer to design, implement, and optimize high-quality mobile applications for a Polish client. The role involves developing new features and maintaining existing products for both iOS and Android platforms. Work is primarily remote with occasional visits to Warsaw. 🗂️ Requirements: Minimum 3 years of experience in mobile application development, Strong knowledge of React Native for iOS and Android, Experience publishing and maintaining apps in App Store, Experience publishing and maintaining apps in Google Play, Ability to optimize mobile applications for performance on iOS and Android 📃 Skills: React, ReactNative, JavaScript, iOS, Android, AppStore, GooglePlay 🏢 Description: Dołącz do nas jako React Native Developer i twórz wysokiej jakości aplikacje mobilne dla polskiego klienta. Szukamy osoby, która sprawnie porusza się w ekosystemie iOS i Android. Zakres obowiązków: Projektowanie i implementacja aplikacji mobilnych w React Native. Optymalizacja aplikacji pod kątem wydajności na obu platformach (iOS/Android). Rozwój nowych funkcjonalności i utrzymanie istniejących produktów. Wymagania: Minimum 3 lata doświadczenia w tworzeniu aplikacji mobilnych. Bardzo dobra znajomość frameworka React Native dla iOS i Android. Doświadczenie w publikacji i utrzymaniu aplikacji w sklepach (App Store/Google Play). Praca zdalna z okazjonalnymi wizytami w Warszawie .

🏢 Summary: Senior React Native Engineer role to build a greenfield mobile application for a digital asset bank, with full ownership over architecture and key technical decisions. The position involves close collaboration with the Tech Lead and backend teams to deliver a secure, scalable fintech product. 🗂️ Requirements: Experience in banking or fintech, Strong experience with React Native, Experience in mobile development for iOS and Android, Ability to design application architecture, Ability to make and justify technical decisions, Experience with TypeScript, Experience with state management, Experience with testing in mobile applications, Experience with CI/CD pipelines, Experience with AI coding tools 📃 Skills: React, ReactNative, TypeScript, iOS, Android, CI/CD, Copilot, Swift, Kotlin, Blockchain, Crypto, Testing, StateManagement 🏢 Description: We are looking for an experienced Senior React Native Engineer to build a mobile application from scratch for a digital asset bank. The role involves designing architecture, making key technical decisions, and working closely with the Mobile Tech Lead. Key requirements: Experience in banking/fintech (required) Strong expertise in React Native and mobile development (iOS/Android) Ability to make and justify technical decisions based on past experience Solution-oriented and proactive mindset Knowledge of TypeScript, state management, testing, and CI/CD Experience with AI coding tools (e.g., Copilot) Nice to have: Knowledge of crypto/blockchain Native mobile experience (Swift/Kotlin) Understanding of mobile security best practices Responsibilities: Build a mobile app from scratch (greenfield) Define architecture and standards Propose solutions and analyze trade-offs Collaborate with backend teams and the Tech Lead

🏢 Summary: 4-month freelance contract for a Senior React Native Developer to build and maintain a cross-platform mobile application for iOS and Android based on an existing web platform. The role focuses on implementing new features, integrating APIs, optimizing performance, and contributing to architecture and code quality. The application supports monitoring and operational control of autonomous cleaning robots in large commercial facilities. 🗂️ Requirements: Availability from July 1st, 4+ years of commercial software development experience, Strong knowledge of React Native, Strong knowledge of TypeScript, Experience with REST API integrations, Understanding of App Store release processes, Understanding of Google Play release processes, Experience working in Agile teams, Proficiency with Git 📃 Skills: React, ReactNative, TypeScript, REST, Git, iOS, Android, Swift, Kotlin, CI/CD, Agile 🏢 Description: We are looking for an experienced Senior React Native Developer responsible for building and maintaining modern mobile applications for both iOS and Android platforms. The person in this role will collaborate closely with the project team on application architecture, implementation of new features, and performance optimization. This is a 6-month freelance contract (with a possibility of extension, though not guaranteed). Requirements: Availability starting July 1st 4+ years of commercial software development experience strong knowledge of React Native and TypeScript experience with REST API integrations understanding of App Store and Google Play release processes experience working in Agile teams good knowledge of Git Nice to have: experience with native iOS (Swift) or Android (Kotlin) development familiarity with CI/CD pipelines for mobile applications experienced in using AI tools in day-to-day workflow Responsibilities: Develop and maintain a cross-platform mobile application using React Native for iOS and Android. Implement new features based on the existing web application and business requirements. Collaborate with backend, web, QA, and product teams to ensure seamless integration and consistent user experience. Integrate REST APIs and real-time communication mechanisms. Optimize application performance, stability, and scalability. Participate in architecture discussions, code reviews, and technical decision-making. Troubleshoot, debug, and resolve application issues. Contribute to improving development standards, CI/CD processes, and overall code quality Project description: Development of a mobile application based on an existing web platform used for managing autonomous cleaning robots operating in shopping malls, airports, and other large commercial facilities. The application will support robot monitoring, task management, real-time status tracking, and operational control for end users.

🏢 Summary: The role involves building and scaling a high-performance React Native mobile application integrated with an existing web customer portal. The developer will own the mobile architecture, ensuring scalable navigation, state management, networking, and seamless backend API integration for iOS and Android. The position includes end-to-end feature delivery, performance optimization, and establishing mobile development best practices. 🗂️ Requirements: 5–8+ years of Frontend or Mobile development experience, 3+ years of production experience with React Native on iOS and Android, Strong proficiency in JavaScript, Strong proficiency in TypeScript, Experience with native module integration, Experience with deep-level debugging, Knowledge of mobile performance profiling, Ability to build accessible and responsive mobile UIs, Experience with unit, integration, and e2e testing, Experience with CI/CD workflows, Experience with React Navigation, Experience with state management using React Query, SWR, Redux, or Context 📃 Skills: ReactNative, JavaScript, TypeScript, iOS, Android, ReactNavigation, ReactQuery, SWR, Redux, Context, Jest, RTL, CI/CD, APIs 🏢 Description: The objective is to build and scale a React Native mobile application that serves as a high-performance companion to an existing web customer portal. You will own the core mobile experience, architecting scalable solutions for navigation, state management, and networking while ensuring seamless integration with existing backend APIs. This role is ideal for a developer who can deliver end-to-end features and establish mobile best practices within a collaborative team environment. Details Location: Remote, with a preference for candidates based in Wrocław (for quarterly on-site client meetings). Primary Project Language: Polish. Target Platforms: iOS and Android. Responsibilities End-to-End Development: Building mobile features that maintain parity and cohesion with the web customer portal. Architecture: Designing scalable code structures, focusing on efficient navigation, state management, and robust networking. Performance & Reliability: Ensuring high stability, fast UI responsiveness, and implementing offline-tolerant UX where necessary. Technical Leadership: Establishing mobile development standards, mentoring other engineers, and improving release cadence. Collaboration: Working closely with product, design, and backend teams to ensure a unified user experience. Requirements General Seniority: 5–8+ years in Frontend or Mobile development. React Native Mastery: 3+ years of experience shipping and maintaining production React Native apps (iOS + Android). Core Skills: Strong proficiency in JavaScript/TypeScript . Native Modules: Experience with native module integration and deep-level debugging. Optimization: Solid knowledge of mobile performance profiling and building accessible, responsive UIs. Testing & DevOps: Comfort with unit/integration/e2e testing (Jest, RTL) and CI/CD workflows. Navigation: React Navigation. Data & State: React Query / SWR or Redux / Context. Nice to Have Familiarity with both Expo and bare React Native workflows. Experience with push notifications, deep linking, and mobile analytics. Prior experience with B2B, customer self-service, or account management applications.