Middle/Senior React Native Developer

🏢 Summary: Senior Front-End Developer role focused on building scalable, secure fintech solutions using React.js and TypeScript. The position involves designing large-scale distributed systems, developing and integrating APIs, and ensuring high-quality standards across the development lifecycle. The role also includes mentoring engineers and contributing to architectural decisions in a cloud-based environment. 🗂️ Requirements: 5+ years of front-end development experience, 3+ years of experience with TypeScript, 4+ years of experience with React.js, Experience designing distributed and secure systems, Understanding of microservices architecture, Experience designing and maintaining APIs, Experience building and consuming REST or GraphQL APIs, Experience with AWS cloud services, Knowledge of testing best practices, Upper-Intermediate English proficiency 📃 Skills: React.js, TypeScript, JavaScript, REST, GraphQL, AWS, Microservices, APIs, Docker, Kubernetes, CI/CD 🏢 Description: Ready to take your front-end expertise to the next level? At Sigma Software, we’re looking for a Senior Front-End Developer with strong React.js expertise who thrives on crafting exceptional user experiences and delivering high-quality, scalable solutions. Joining Sigma Software means becoming part of a global team that values your ideas, supports your growth, and empowers you to make an impact. We believe in combining cutting-edge technologies with a culture of collaboration and continuous improvement. Customer Our client has rapidly become one of Europe’s most swiftly expanding FinTech companies. They oversee all aspects of financial operations, from generating virtual cards to facilitating wire transfers and maintaining customer account balances. As a payment institution, our client provides a platform that integrates financial services into its product, offering features such as account management, card payments, bank transfers, and additional services. Responsibilities Design and implement large-scale software solutions and components, primarily using React.js and TypeScript Maintain high-quality standards throughout development, testing, and deployment phases Collaborate closely with cross-functional teams to understand requirements and deliver optimal solutions Mentor and guide less-experienced engineers, fostering knowledge sharing and skill development Apply clean code principles, design patterns, and best practices in all development work Ensure system security and scalability in distributed architectures Participate in code reviews and continuous improvement initiatives Requirements 5+ years of experience in front-end software development 3+ years of experience with TypeScript 4+ years of experience working with React.js Strong expertise in designing distributed and secure systems Solid understanding of microservices architecture Experience in designing, building, and maintaining APIs Proficiency in building and consuming REST and/or GraphQL APIs Experience working with AWS cloud services Knowledge of testing best practices Upper-Intermediate or higher English proficiency Would be a plus Familiarity with DevOps practices Experience with CI/CD pipelines and automation tools Knowledge of containerization (Docker, Kubernetes) Exposure to financial services or payment systems Understanding of regulatory compliance in FinTech Personal Profile Strong analytical and problem-solving skills Excellent communication and team collaboration abilities Proactive approach to learning and adopting new technologies Leadership mindset with mentoring capabilities Attention to detail and commitment to quality

🏢 Summary: Senior Front-End Developer role focused on building large-scale, secure, and scalable solutions using React.js and TypeScript within a FinTech environment. The position involves designing distributed systems, developing APIs, and ensuring high-quality standards across the development lifecycle. The role also includes mentoring team members and contributing to architectural and technical decisions. 🗂️ Requirements: 5+ years of front-end development experience, 3+ years of TypeScript experience, 4+ years of React.js experience, Experience designing distributed and secure systems, Understanding of microservices architecture, Experience designing and maintaining APIs, Experience with REST or GraphQL APIs, Experience with AWS cloud services, Knowledge of testing best practices, Upper-Intermediate English proficiency 📃 Skills: React, TypeScript, JavaScript, REST, GraphQL, AWS, Microservices, APIs, Docker, Kubernetes, CI/CD 🏢 Description: Ready to take your front-end expertise to the next level? At Sigma Software, we’re looking for a Senior Front-End Developer with strong React.js expertise who thrives on crafting exceptional user experiences and delivering high-quality, scalable solutions. Joining Sigma Software means becoming part of a global team that values your ideas, supports your growth, and empowers you to make an impact. We believe in combining cutting-edge technologies with a culture of collaboration and continuous improvement. Customer Our client has rapidly become one of Europe’s most swiftly expanding FinTech companies. They oversee all aspects of financial operations, from generating virtual cards to facilitating wire transfers and maintaining customer account balances. As a payment institution, our client provides a platform that integrates financial services into its product, offering features such as account management, card payments, bank transfers, and additional services. Responsibilities Design and implement large-scale software solutions and components, primarily using React.js and TypeScript Maintain high-quality standards throughout development, testing, and deployment phases Collaborate closely with cross-functional teams to understand requirements and deliver optimal solutions Mentor and guide less-experienced engineers, fostering knowledge sharing and skill development Apply clean code principles, design patterns, and best practices in all development work Ensure system security and scalability in distributed architectures Participate in code reviews and continuous improvement initiatives Requirements 5+ years of experience in front-end software development 3+ years of experience with TypeScript 4+ years of experience working with React.js Strong expertise in designing distributed and secure systems Solid understanding of microservices architecture Experience in designing, building, and maintaining APIs Proficiency in building and consuming REST and/or GraphQL APIs Experience working with AWS cloud services Knowledge of testing best practices Upper-Intermediate or higher English proficiency Would be a plus Familiarity with DevOps practices Experience with CI/CD pipelines and automation tools Knowledge of containerization (Docker, Kubernetes) Exposure to financial services or payment systems Understanding of regulatory compliance in FinTech Personal Profile Strong analytical and problem-solving skills Excellent communication and team collaboration abilities Proactive approach to learning and adopting new technologies Leadership mindset with mentoring capabilities Attention to detail and commitment to quality

🏢 Summary: Oferta dotyczy długoterminowego, w pełni zdalnego rozwoju aplikacji mobilnej dla globalnej platformy gamingowo-rozrywkowej. React Native Developer będzie tworzyć nowe funkcje i uczestniczyć w migracji produktu z React do React Native, mając wpływ na decyzje techniczne w podejściu Mobile First. 🗂️ Requirements: Minimum 4 lata komercyjnego doświadczenia z React Native, Bardzo dobra znajomość React, Praktyczne doświadczenie z JavaScript, Praktyczne doświadczenie z TypeScript, Doświadczenie w tworzeniu aplikacji mobilnych na Android i iOS, Samodzielna realizacja zadań, Biegła znajomość języka polskiego i angielskiego — C1 📃 Skills: ReactNative, React, JavaScript, TypeScript, Android, iOS 🏢 Description: Dołącz do zespołu realizującego długoterminowy projekt dla globalnej platformy z branży gamingowej i rozrywkowej. Poszukiwany jest React Native Developer do rozwoju nowoczesnej aplikacji mobilnej wykorzystywanej przez miliony użytkowników na całym świecie. To doskonały moment, aby dołączyć do projektu. Zespół przejmuje rozwój produktu od zewnętrznego dostawcy, co daje realny wpływ na kierunek rozwoju aplikacji, decyzje techniczne oraz sposób realizacji nowych funkcjonalności. Projekt realizowany jest w podejściu Mobile First. Głównym celem jest rozwój nowych funkcjonalności oraz migracja aplikacji z React do React Native. Prace utrzymaniowe stanowią jedynie niewielką część codziennych obowiązków. Zakres obowiązków • Rozwój i implementacja nowych funkcjonalności w aplikacji mobilnej • Udział w migracji aplikacji z React do React Native • Współpraca z zespołami Android i iOS • Dbanie o wysoką jakość kodu oraz wydajność aplikacji • Udział w projektowaniu i rozwijaniu rozwiązań technicznych Wymagania • Minimum 4 lata komercyjnego doświadczenia w tworzeniu aplikacji z wykorzystaniem React Native • Bardzo dobra znajomość React • Praktyczne doświadczenie z JavaScript oraz TypeScript • Doświadczenie w pracy nad aplikacjami mobilnymi dla Android i iOS • Umiejętność samodzielnej realizacji powierzonych zadań • Znajomość języka polskiego i angielskiego na poziomie biegłym (C1) • Doświadczenie z pracą w zespołach Agile będzie dodatkowym atutem Mile widziane • Doświadczenie w tworzeniu i rozwijaniu aplikacji mobilnych o dużej skali • Doświadczenie w projektach z branży iGaming • Doświadczenie przy produktach z obszaru Casino lub Poker • Znajomość rozwiązań i standardów stosowanych w branży gier online Tech Stack • React Native • React • JavaScript • TypeScript • Android • iOS Oferujemy • Pracę w 100% zdalną • Długoterminowy projekt • Możliwość realnego wpływu na rozwój produktu i decyzje technologiczne • Udział w projekcie realizowanym w podejściu Mobile First • Współpracę z doświadczonym zespołem i wykorzystanie nowoczesnych technologii

🏢 Summary: Długoterminowy, w 100% zdalny projekt Mobile First dla globalnej platformy gamingowo‑rozrywkowej. Rola obejmuje rozwój aplikacji React Native używanej przez miliony użytkowników, migrację z React oraz wpływ na architekturę i decyzje techniczne. 🗂️ Requirements: Minimum 6 lat komercyjnego doświadczenia z React Native, Bardzo dobra znajomość React, Praktyczne doświadczenie z JavaScript, Praktyczne doświadczenie z TypeScript, Doświadczenie w tworzeniu aplikacji mobilnych na Android i iOS, Samodzielna realizacja złożonych zadań technicznych, Doświadczenie w projektowaniu rozwiązań i podejmowaniu decyzji technicznych, Umiejętność wsparcia zespołu i dzielenia się wiedzą, Biegła znajomość języka polskiego i angielskiego (C1) 📃 Skills: ReactNative, React, JavaScript, TypeScript, Android, iOS 🏢 Description: Dołącz do zespołu realizującego długoterminowy projekt dla globalnej platformy z branży gamingowej i rozrywkowej. Poszukujemy React Native Developera, który będzie uczestniczył w rozwoju nowoczesnej aplikacji mobilnej wykorzystywanej przez miliony użytkowników na całym świecie. Zespół przejmuje rozwój produktu od zewnętrznego dostawcy, dzięki czemu będziesz mieć realny wpływ na kierunek rozwoju aplikacji, podejmowane decyzje techniczne oraz sposób realizacji nowych funkcjonalności. Projekt realizowany jest w podejściu Mobile First. Głównym celem jest rozwój nowych funkcjonalności oraz migracja aplikacji z React do React Native. Prace utrzymaniowe stanowią jedynie niewielką część codziennych obowiązków. Zakres obowiązków - Rozwój aplikacji w React Native - Udział w migracji aplikacji webowych do React Native - Implementacja kluczowych i złożonych funkcjonalności - Podejmowanie decyzji technicznych dotyczących rozwoju aplikacji - Współtworzenie architektury oraz standardów rozwoju React Native - Prowadzenie najbardziej wymagających zadań technicznych - Wsparcie zespołu podczas migracji do React Native - Współpraca z zespołami Android i iOS Wymagania - Minimum 6 lat komercyjnego doświadczenia w tworzeniu aplikacji z wykorzystaniem React Native - Bardzo dobra znajomość React - Praktyczne doświadczenie z JavaScript oraz TypeScript - Doświadczenie w pracy nad aplikacjami mobilnymi dla Android i iOS - Pełna samodzielność w realizacji złożonych zadań - Doświadczenie w podejmowaniu decyzji technicznych oraz projektowaniu rozwiązań - Umiejętność wspierania zespołu i dzielenia się wiedzą - Znajomość języka polskiego i angielskiego na poziomie biegłym (C1) - Doświadczenie z pracą w zespołach Agile będzie dodatkowym atutem Mile widziane - Doświadczenie w tworzeniu i rozwijaniu aplikacji mobilnych o dużej skali - Doświadczenie w projektach z branży iGaming - Doświadczenie przy produktach z obszaru Casino lub Poker - Znajomość rozwiązań i standardów stosowanych w branży gier online Tech Stack - React Native - React - JavaScript - TypeScript - Android - iOS Oferujemy - Pracę w 100% zdalną - Długoterminowy projekt - Możliwość realnego wpływu na rozwój produktu i decyzje technologiczne - Udział w projekcie realizowanym w podejściu Mobile First - Współpracę z doświadczonym zespołem i wykorzystanie nowoczesnych technologii

🏢 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: 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: Oferta dotyczy rozwoju globalnej, wielomodułowej platformy mobilnej dla sektora paliwowo-detalicznego, obsługującej miliony użytkowników i usługi cyfrowe oraz programy lojalnościowe. Senior React Native Developer będzie projektować, rozwijać i optymalizować aplikacje, podejmować decyzje architektoniczne oraz wspierać zespół poprzez code review i mentoring. 🗂️ Requirements: Minimum 5 lat komercyjnego doświadczenia w tworzeniu oprogramowania, Minimum 4 lata doświadczenia z React Native, Ekspercka znajomość TypeScript, Zaawansowana znajomość nowoczesnego JavaScript, Rozległe doświadczenie z MobX, Znajomość React Query/TanStack Query, synchronizacji danych i React Hooks, Doświadczenie w tworzeniu i utrzymaniu modułów natywnych iOS oraz Android, Doświadczenie z REST API, GraphQL i procesami CI/CD, Język angielski na poziomie minimum C1 📃 Skills: ReactNative, TypeScript, JavaScript, MobX, ReactQuery, TanStackQuery, ReactHooks, iOS, Android, REST, GraphQL, CI/CD 🏢 Description: Projekt Globalna platforma mobilna oferująca usługi cyfrowe i programy lojalnościowe, z której korzystają miliony użytkowników. Wielomodułowa architektura umożliwia ponowne wykorzystanie kodu i szybkie wdrażanie nowych funkcji. Twoja rola - Projektowanie, rozwój i utrzymanie złożonych aplikacji mobilnych w oparciu o React Native oraz TypeScript. - Prowadzenie przeglądów kodu, mentoring zespołu oraz promowanie dobrych praktyk inżynierskich. - Podejmowanie decyzji architektonicznych i rozwój wielomodułowej platformy mobilnej. - Doskonalenie wydajności, niezawodności, skalowalności i utrzymywalności aplikacji. - Prowadzenie dyskusji technicznych oraz współtworzenie projektów rozwiązań. - Identyfikacja długu technologicznego i inicjowanie usprawnień w bazie kodu. - Integracja natywnych funkcji mobilnych oraz usług zewnętrznych. Czego oczekujemy - Co najmniej 5-letnie komercyjne doświadczenie w wytwarzaniu oprogramowania, w tym minimum 4 lata praktyki z React Native. - Ekspercka znajomość TypeScript i nowoczesnego JavaScript oraz rozległe doświadczenie z MobX. - Dobra znajomość React Query/TanStack Query, strategii synchronizacji danych oraz React Hooks. - Doświadczenie w tworzeniu i utrzymaniu modułów natywnych dla iOS oraz Android. - Doświadczenie z REST API, GraphQL oraz procesami CI/CD. - Znajomość języka angielskiego na poziomie co najmniej C1. Oferujemy - Uczestnictwo w spotkaniach integracyjnych oraz meetupach technologicznych, umożliwiających dzielenie się wiedzą i doświadczeniem. - Dostęp do najnowszych technologii i narzędzi pracy. - 5000 PLN za polecenie znajomego do projektów. - Szybki i zdalny proces.

🏢 Summary: Senior React Native Engineer role focused on building and scaling high-performance mobile applications using a modern tech stack. The position involves developing new features, contributing to architectural decisions, and ensuring code quality through testing and best practices. The role requires close collaboration with cross-functional teams to deliver reliable, production-ready apps. 🗂️ Requirements: 5+ years of software development experience, Strong expertise in React Native, Proficiency in JavaScript and TypeScript, Experience building production-ready mobile applications, Understanding of mobile UI/UX optimization, Experience with performance tuning, Familiarity with HTML and CSS/SASS, Basic knowledge of React, Experience with backend integration, Experience with SQL databases, Experience with API integration, Ability to write unit tests, Strong debugging and troubleshooting skills, Fluent English (B2/C1 minimum) 📃 Skills: ReactNative, JavaScript, TypeScript, HTML, CSS, SASS, React, SQL, APIs, UnitTesting, Debugging, Mobile, UI, UX, Performance, Backend 🏢 Description: Senior React Native Engineer We’re looking for an experienced Senior React Native Engineer to join our team and contribute to a new project built with a modern tech stack. If you’re motivated by creating meaningful solutions and enjoy working on impactful products, we’d love to hear from you! What you’ll do: Build and maintain mobile applications using React Native, ensuring clean, scalable, and well-documented code Develop new features and enhance existing ones for high-performance and reliable apps Participate in architectural discussions and technical decision-making Write and maintain unit tests to guarantee code quality and stability Collaborate closely with product managers, designers, and stakeholders to deliver impactful solutions Review peers’ code, provide feedback, and encourage engineering best practices What you bring: 5+ years of professional experience in software development, with strong expertise in React Native Solid knowledge of JavaScript/TypeScript and proven experience building production-ready apps Understanding of mobile UI/UX optimization and performance tuning Familiarity with HTML, CSS/SASS , and cross-platform design principles Basic knowledge of React , and backend stack Experience with SQL databases and API integration Strong debugging, problem-solving, and troubleshooting skills Excellent collaboration skills and ability to work in an international team Fluent English (B2/C1 level minimum) Benefits: multisport medical care insurance remote work

🏢 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.