Senior React Native Developer – energy tech project (f/m/x)

🏢 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: 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: 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: Mid+/Senior Mobile Developer role focused on building and maintaining a complex React Native application for Android and iOS. The position involves delivering high-performance, user-centric mobile solutions with features like geolocation, EV charging integration, and CarPlay support. You will collaborate cross-functionally to ensure code quality, stability, and scalable mobile architecture. 🗂️ Requirements: 4+ years commercial mobile development experience, Expert knowledge of React Native, Strong JavaScript proficiency, Strong TypeScript proficiency, Experience with REST or GraphQL APIs, Deep understanding of mobile build and release processes, Experience publishing to App Store or Google Play, Knowledge of mobile testing practices, Ability to design mobile application architecture 📃 Skills: ReactNative, JavaScript, TypeScript, REST, GraphQL, Android, iOS, Kotlin, Java, Swift, CICD, CarPlay, Geolocation, AppStore, GooglePlay 🏢 Description: Tech stack: React Native mobile ecosystem JavaScript TypeScript REST/GraphQL Requirements: 4+ years of commercial experience in mobile development (Android and/or iOS). Expert-level knowledge of React Native . A "mobile-first" mindset with experience in building complex mobile applications. Deep understanding of the mobile ecosystem (build processes, testing, and store publication). Strong proficiency in JavaScript and TypeScript . Experience integrating with APIs ( REST / GraphQL ). Strong problem-solving skills and the ability to work effectively both independently and in a team. About the Role: We are looking for an experienced Mobile Developer (Mid+ or Senior level) with at least 4 years of commercial experience in building mobile applications for Android and/or iOS. The ideal candidate is a mobile-first specialist—we are looking for someone whose expertise is rooted deeply in the mobile ecosystem rather than web development. You should have a strong command of React Native and a passion for creating high-performance, user-centric mobile experiences. The Project: You will join a project for a major international corporation in the energy and chemical sector . We are developing a modern mobile application for B2B and B2C users that manages fuel cards, loyalty programs, and exclusive discounts. The app has a real-world impact on the daily lives of drivers, supporting them on the road and through charging infrastructure. Key features include: User Management: Smooth B2B and B2C registration and login. Benefits: Fuel card management, loyalty rewards, and discount tracking. Maps & Geolocation: Searching for stations and points of interest. E-Mobility: Starting/stopping EV charging sessions directly from the app with real-time (live) status tracking. Advanced Features: CarPlay integration (MVP) and dynamic widgets for quick access to key information. Main responsibilities: Developing and maintaining mobile applications using React Native . Collaborating closely with the Product Team, Backend Developers, and UX/UI Designers. Ensuring high code quality, application performance, and stability. Actively participating in product roadmapping and technical decision-making. Conducting code reviews and sharing knowledge with the team Nice to Have Experience with native development : Kotlin/Java (Android) or Swift (iOS). Hands-on experience with native deployment (Google Play Store / App Store, certificates, provisioning, signing). Knowledge of CI/CD pipelines tailored for mobile apps. Experience in mobile performance optimization. Background in designing mobile application architecture.

🏢 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: Senior React Native Developer role focused on designing, developing, and maintaining cross-platform mobile applications using React Native. The position involves building new features, optimizing performance, integrating backend services, and ensuring high code quality. It requires strong expertise in modern JavaScript/TypeScript and mobile development practices. 🗂️ Requirements: Minimum 4 years of mobile application development experience, At least 2 years of commercial experience with React Native, Strong knowledge of JavaScript (ES6+), Strong knowledge of TypeScript, Experience with state management (Redux or Context API), Experience integrating REST API or GraphQL, Experience publishing apps to App Store and Google Play, Ability to debug and optimize mobile applications, Experience with CI/CD tools, Experience with code reviews and applying best coding practices 📃 Skills: React, ReactNative, JavaScript, TypeScript, Redux, ContextAPI, REST, GraphQL, CI/CD, iOS, Android, Swift, Objective-C, Kotlin, Java, Jest, Detox, Fastlane, Bitrise, AppCenter 🏢 Description: We are seeking an experienced Senior React Native Developer to join our team. In this role, you will be responsible for designing, developing, and maintaining mobile applications using React Native. The ideal candidate has a strong background in JavaScript/TypeScript, hands-on experience with React Native, and a solid understanding of mobile application development. Experience with native development for iOS and/or Android is a strong plus. Responsibilities Design and implement new features for mobile applications using React Native Maintain and enhance existing mobile applications Collaborate with project teams, designers, and QA engineers Optimize application performance and troubleshoot technical issues Participate in code reviews and share knowledge with the team Integrate applications with backend services (REST API, GraphQL) Apply best coding practices and ensure high code quality Requirements Minimum 4 years of experience in mobile application development, including at least 2 years with React Native Strong knowledge of JavaScript (ES6+) and TypeScript Experience with state management tools such as Redux, Context API, or similar Familiarity with publishing apps to the App Store and Google Play Ability to debug and optimize mobile applications Experience with CI/CD tools Good command of English, both written and spoken, for technical communication Nice to have Experience with native iOS development (Swift/Objective-C) and/or Android development (Kotlin/Java) Familiarity with tools like Fastlane, Bitrise, App Center Experience with mobile app testing (e.g., Jest, Detox) Understanding of mobile application security best practices We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 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.

🏢 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: Remote role for an experienced Java and ReactNative Developer focused on building scalable web applications across backend services and modern frontend interfaces. The position involves developing RESTful APIs, collaborating in Agile teams, and supporting CI/CD-driven deployments. 🗂️ Requirements: Strong experience with Java, Solid experience with ReactNative, Experience building and consuming REST APIs, Strong knowledge of JavaScript, Strong knowledge of HTML, Strong knowledge of CSS, Experience with Git, Familiarity with Agile development environments, Good communication skills in English 📃 Skills: Java, ReactNative, REST, JavaScript, HTML, CSS, Git, Agile, Spring, TypeScript, SQL, Docker, CI/CD 🏢 Description: We are looking for an experienced Java & ReactNative Developer to join our development team In this role, you will work on building and maintaining scalable web applications, contributing to both backend services and modern frontend interfaces. Key Responsibilities Develop and maintain backend services using Java Build responsive and modern user interfaces using ReactNative Design and implement RESTful APIs Collaborate with product managers, designers, and engineers to deliver new features Write clean, maintainable, and efficient code Participate in code reviews and contribute to development best practices Troubleshoot and resolve technical issues Support integration and deployment through CI/CD pipelines Required Skills and Experience Strong experience with Java Solid experience with ReactNative Experience building and consuming REST APIs Strong knowledge of JavaScript, HTML, and CSS Experience with Git and modern development workflows Familiarity with Agile development environments Good communication skills in English Nice to Have Experience with Spring Boot Experience with TypeScript Knowledge of SQL databases Familiarity with Docker or cloud platforms Work Model Remote Europe.

🏢 Summary: Role focused on developing and evolving consumer-facing mobile applications using React Native (Expo), with strong ownership over architecture and technical decisions. The position involves building high-impact mobile products for well-known brands and collaborating cross-functionally to shape product direction. Emphasis is placed on AI-assisted development workflows and modern engineering practices. 🗂️ Requirements: 3+ years commercial experience with React Native, Experience with Expo, Contributions to минимум 3 commercial projects, Documented role, challenges, solutions, and results in projects, Extensive use of AI-assisted development tools, Ability to design mobile app architecture, Ability to document architecture and component structures, Ability to manage state management flows 📃 Skills: React, ReactNative, Expo, JavaScript, TypeScript, AI, Cursor, Claude, AWS, DigitalOcean 🏢 Description: React Native Developer at gmi.software We’re looking for a React Native Developer ready to take true ownership of their work. At gmi.software , we protect your deep-work time so you can focus on coding and solving meaningful problems, while also empowering you to step up and lead technical discussions to shape the product roadmap. If you value a clear direction, a modern workflow, and a team that respects your expertise, we want to hear from you. What we’re looking for: 3+ years of commercial experience with React Native (Expo). Proven contributions to at least 3 commercial projects , please include clear examples in your CV detailing your role, the challenges faced, your solutions, and the final results. Extensive experience with AI-assisted development tools (like Cursor or Claude Code). It is a huge plus if you already have a proven, daily workflow built around them to accelerate your output. Strong architectural understanding: Ability to design, document, and communicate mobile app architecture, component structures, and state management flows. Bonus points: A track record of contributing to the open-source community. Nice to have: Hands-on experience with cloud solutions (DigitalOcean or AWS). Soft skills we value: Client Collaboration: Proven ability (or a strong desire) to run successful technical or discovery workshops with clients. Team-oriented and genuinely open to constructive feedback. Problem-solver who communicates complex concepts clearly to both technical and non-technical stakeholders. Proactive and adaptable, with a talent for anticipating roadblocks before they become emergencies. Project Scope You will work on mobile projects for well-known consumer brands, including SFD which is one of the most recognizable fitness, supplementation, and lifestyle brands in Poland, boasting a massive and highly engaged user community. Your role will involve driving the development and evolution of consumer-facing mobile products that support user training, nutrition, daily motivation, and long-term brand loyalty. Key aspects of working at gmi.software : High-Impact Work: Building high-visibility mobile products for established brands, with a real, measurable impact on user experience. Cross-Functional Synergy: Seamless collaboration with product, design, and marketing teams. Project Stability & Security: We offer a steady stream of long-term development work. Instead of worrying about project gaps or sitting on a bench, you will have the stability to continuously improve and scale production applications. What you can expect: A fast, transparent, and respectful recruitment process. Fully remote work with flexible hours. Premium tooling, including access to unlimited Cursor for all your work-related tasks. Ready to apply? We’re excited to hear from you.