Frontend React Developer

🏢 Summary: 6-month fully remote contract for a Mid .NET Developer to build and maintain backend services for a modern EdTech web platform. The role focuses on designing REST APIs, modeling data in PostgreSQL, and delivering production-grade features end-to-end using .NET 9 and Entity Framework. You will work on a user-facing application with strong emphasis on clean architecture, testing, and performance. 🗂️ Requirements: 5+ years commercial experience as .NET Developer building production backend systems, .NET 9 experience building REST APIs and backend services, Strong experience with Entity Framework Core, Advanced knowledge of REST API design, Advanced knowledge of PostgreSQL schema design and query optimization, Experience with CI/CD pipelines, Basic knowledge of Docker, Experience writing unit and integration tests, Experience using coding assistant tools 📃 Skills: C#, .NET, REST, EntityFramework, PostgreSQL, SQL, Docker, CICD, GitHubActions, AzureDevOps, GitLabCI, React, TypeScript 🏢 Description: About the Project We are looking for a Mid .NET Developer to join us on a web application project in the EdTech industry - an educational platform being delivered for our client. The product is a modern, user-facing web application aimed at an end-user audience that expects a polished, accessible experience. Tech context Backend : .NET 9 (REST API), Entity Framework 9 Database: PostgreSQL Frontend : React 18 with TypeScript Engagement Duration : 6 months - project runs through October 2026 Start date : ASAP Capacity : ~130-140 hours/month Work mode : fully remote Equipment : your own hardware Responsibilities Design, develop and maintain backend services and REST APIs in .NET 9 powering the educational platform. Model the domain together with the team — translate product requirements into clean, maintainable code and a sensible data model in PostgreSQL . Implement and evolve the data layer using Entity Framework 9 — entities, configurations, migrations, querying, and performance tuning. Design API contracts Take ownership of features end-to-end — from refinement, through implementation and testing, to deployment Write clean, testable code and cover it with unit and integration tests ; contribute to keeping the test suite healthy and meaningful. Technical Requirements Required 5+ years of commercial experience as a .NET Developer building production-grade backend systems. Strong, hands-on experience with .NET 9 and Entity Framework Core — building REST APIs, middleware, dependency injection, configuration, background services. Advanced knowledge of REST API design Advanced knowledge of PostgreSQL — schema design, indexing strategies, query optimization English - sufficient for written and spoken communication within the team. Familiarity with CI/CD pipelines (GitHub Actions, Azure DevOps, GitLab CI or similar) and basic awareness of containerization (Docker). Day-to-day use of coding assistant tools like Claude Code, Codex, GitHub Copilot or similar Nice to have Exposure to Azure — deploying and operating .NET services in the cloud. Familiarity with the front-end stack (React + TypeScript) — enough to read FE code, debug integration issues and have productive conversations with FE engineers. Previous work in EdTech or other user-facing products with strict reliability, accessibility and data-privacy requirements. Recruitment Process CV screening Technical interview Decision If this sounds like a fit, we'd love to see your CV.

🏢 Summary: Mid Frontend React Developer role focused on building AI-powered enterprise web applications using React, Next.js, and TypeScript. The position involves developing scalable user interfaces, integrating backend APIs, and improving performance and usability in collaboration with cross-functional teams. The offer includes access to modern AI development tools, stock options, and work on production AI products used by enterprise customers. 🗂️ Requirements: 2–5 years of frontend development experience, React, JavaScript, TypeScript, Next.js or modern React framework, REST APIs, Asynchronous data fetching, Modern CSS solutions, Responsive design, Cross-browser compatibility, Reusable frontend code, Git, Modern development workflows, AI coding tools, English B2+ 📃 Skills: React, Next.js, TypeScript, JavaScript, REST, Tailwind, CSS, Git, Copilot, ChatGPT, Claude, SWR, ReactQuery, Node.js, Python, Playwright, Cypress, AWS, Highcharts 🏢 Description: About Us Many companies want to use AI agents, but these tools often struggle with real business tasks. We build a platform that helps AI understand company knowledge, workflows, and processes, enabling it to provide accurate and reliable answers. Our technology is trusted by large international companies and integrates with leading AI and cloud platforms. Our mission is to help people find better answers and make better decisions with AI. About the Role We are looking for a Mid Frontend React Developer to help build modern web applications that make enterprise AI intuitive and reliable. You'll work closely with experienced frontend engineers, designers, backend developers, and product managers to create fast, responsive, and scalable user experiences. You'll contribute to new features, improve existing functionality, and gain hands-on experience building AI-powered products used by enterprise customers. What You Will Do - Build and maintain modern web applications using React, Next.js, and TypeScript. - Develop user interfaces for AI-powered features such as chat, search, and knowledge management. - Create reusable UI components and contribute to our design system. - Integrate frontend applications with backend APIs and real-time data. - Improve application performance, responsiveness, and user experience. - Write clean, maintainable, and well-tested code. - Participate in code reviews and collaborate with engineers, designers, and product managers. - Use AI development tools to improve productivity and software quality. - Learn from production feedback and continuously improve existing features. Requirements - 2–5 years of experience building modern frontend applications. - Good knowledge of React, JavaScript, and TypeScript. - Experience with Next.js or another modern React framework. - Experience working with REST APIs and asynchronous data fetching. - Familiarity with modern CSS solutions such as Tailwind CSS, CSS Modules, or CSS-in-JS. - Understanding of responsive design and cross-browser compatibility. - Experience writing maintainable, reusable frontend code. - Familiarity with Git and modern development workflows. - Experience using AI coding tools such as GitHub Copilot, Claude Code, ChatGPT, or similar. - English at B2 level or higher. Nice to Have - Experience with React Flow, Highcharts, or similar visualization libraries. - Familiarity with SWR, React Query, or similar data-fetching libraries. - Basic knowledge of Node.js or Python. - Experience working with AI-powered applications, chat interfaces, or search experiences. - Familiarity with Playwright, Cypress, or other frontend testing frameworks. - Basic understanding of accessibility and Core Web Vitals. - Experience with AWS or other cloud platforms. What We Offer - 18,000–23,000 PLN B2B (depending on experience). - Company stock options. - MacBook Pro. - Modern technology stack. - Opportunity to contribute to open-source projects. - Access to advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, v0, MCP Servers, and credits for testing new AI technologies. - The opportunity to work on production AI products used by enterprise customers. - A collaborative engineering culture focused on learning, mentorship, and continuous improvement. Our Values - Quality - We build software with care and attention to detail. - Momentum - We move quickly, learn continuously, and improve through iteration. - Accountability - We take ownership of our work and communicate openly. - Hard Work - We solve challenging problems together and support one another. - Learning - We stay curious, embrace feedback, and continuously grow. - Adaptability - We welcome change and see new challenges as opportunities. - Teamwork - We collaborate, share knowledge, and celebrate success together.

🏢 Summary: Part-time Front-end Developer role focused on building and maintaining web applications using ReactJS and TypeScript. The position involves developing new features, writing unit tests, conducting code reviews, and preparing technical documentation. Suitable for junior developers or students seeking hands-on experience in modern front-end development. 🗂️ Requirements: Strong knowledge of ReactJS, Strong knowledge of TypeScript, Ability to write unit tests, Very good knowledge of HTML5, Very good knowledge of CSS3, Very good knowledge of JavaScript, Ability to read technical documentation in English, Knowledge of clean code principles, Knowledge of design patterns, Adherence to software development best practices 📃 Skills: ReactJS, TypeScript, JavaScript, Node, HTML5, CSS3, UnitTesting, GitHub, GitLab, Docker, Git 🏢 Description: Who we’re looking for: We’re looking for a Front-end Developer available for at least part-time work to join our team. If you’re just starting your career or are currently a student, this job is for you. Technologies: ReactJS TypeScript JavaScript Node Responsibilities: Creating new and developing existing web applications on the front-end side Developing tests for applications Preparing technical documentation Conducting code reviews Requirements: English proficiency sufficient to read technical documentation Creative, problem-solving mindset Strong knowledge of ReactJS and TypeScript Ability to write unit tests Very good knowledge of the latest HTML5, CSS3, and JavaScript standards Analytical thinking and problem-solving skills Openness to others and ability to work in a team Willingness to learn new technologies Adherence to software development best practices Knowledge and application of clean code principles Knowledge of design patterns Preferred: Experience with a group or commercial front-end application project Personal projects in your portfolio Knowledge of code repository management platforms, such as GitHub or GitLab Knowledge of Docker We offer: Subsidies for gym memberships Company-wide events Opportunities to learn and gain experience The chance to work on interesting and diverse projects The option to work 100% remotely Participation in industry events

🏢 Summary: Long-term B2B contract for a Mid Frontend React Developer to build responsive UI for a productivity tool based on LLM and Generative AI within an international financial environment. The role focuses on React development, rapid prototyping with strong UX emphasis, and API integration in a hybrid work model. Cooperation with product and design teams to enhance user experience. 🗂️ Requirements: Commercial experience with React.js, Experience building responsive user interfaces, Experience in rapid prototyping with UX focus, Experience integrating APIs and backend services, Strong knowledge of modern CSS practices, Strong knowledge of modern JavaScript, Ability to work hybrid – 6 days per month in Kraków office, English level B2/C1, Maximum 1-month notice period 📃 Skills: React, JavaScript, CSS, HTML, API, REST, UX, Wireframing, Mockups, LLM, GenerativeAI 🏢 Description: Be in IT to firma rekrutacyjna, wyspecjalizowana w poszukiwaniu Specjalistów z branży technologii informatycznych. Obecnie, dla naszego klienta, poszukujemy osoby na stanowisko: Mid Frontend React Developer. Zakres obowiązków: Długofalowa współpraca z międzynarodową, topową firmą consultingową, świadczącą usługi IT dla dużych i średnich firm z różnorodnych sektorów. Długofalowa współpraca z międzynarodową instytucją finansową rozwijającą własne narzędzie produktywności oparte na LLM (Large Language Models) i Generative AI, dedykowane zwiększeniu efektywności pracowników. Budowanie responsywnych interfejsów użytkownika z wykorzystaniem React.js. Szybkie prototypowanie nowych funkcjonalności z naciskiem na UX design. Współpraca z zespołami product i design w celu doskonalenia doświadczeń użytkownika. Integracja API i serwisów backendowych. Stosowanie nowoczesnych praktyk CSS i JavaScript. Wykorzystywanie narzędzi projektowych do tworzenia wireframe'ów i mockup'ów. Oczekujemy: Praktycznego doświadczenia w tworzeniu responsywnych interfejsów użytkownika z wykorzystaniem React.js. Udokumentowanego doświadczenia w szybkim prototypowaniu funkcjonalności z naciskiem na UX design. Umiejętności pracy z narzędziami projektowymi (wireframe'y, mockup'y). Doświadczenia w integracji API i serwisów backendowych. Biegłości w nowoczesnych praktykach CSS i JavaScript. Gotowości do pracy w modelu hybrydowym: 6 dni w miesiącu w biurze w Krakowie. Znajomości języka angielskiego na poziomie B2 lub C1 – umożliwiającej swobodną komunikację w międzynarodowym środowisku. Mile widziana dostępność ASAP; akceptowalny jest maksymalnie miesięczny okres wypowiedzenia ze skutkiem na koniec miesiąca. Oferujemy: Długofalowa współpraca z wynagrodzeniem w przedziale 100-130 PLN netto/godz. + VAT, "czyste B2B". Wsparcie przy zakładaniu i prowadzeniu działalności gospodarczej, dla osób bez takiego doświadczenia. Sprawny proces rekrutacyjny - dwie rozmowy techniczne z managerami, online (każda maksymalnie po godzinie). Współpraca hybrydowa z biura w Krakowie - 6 dni w miesiącu w biurze, w dowolnej konfiguracji (pod rząd lub kilka razy w tygodniu). Benefity - prywatna opieka medyczna, karta Multisport. Nowoczesny sprzęt zapewniany przez firmę, wraz z softem i konfiguracją.

🏢 Summary: Mid-level Frontend React Developer role focused on building and scaling high-performance web applications in the lottery domain. The position involves developing modern, responsive user interfaces, managing application state, and integrating with REST APIs within a collaborative team environment. 🗂️ Requirements: Commercial experience as Mid-level Frontend Developer in React ecosystem, Strong knowledge of React.js, Strong knowledge of TypeScript, Strong knowledge of JavaScript ES6+, Experience with HTML5, Experience with CSS3, Experience with SCSS, Practical experience with React Hooks, Experience with state management (Redux, Zustand, or ContextAPI), Experience with REST API integration, Understanding of Responsive Web Design, Experience with Git and GitHub 📃 Skills: React, TypeScript, JavaScript, HTML5, CSS3, SCSS, Redux, Zustand, ContextAPI, Git, GitHub, REST, RWD, Storybook, Cypress, Next.js, ReactNative, Three.js, WCAG, AgilityCMS, AWS, Azure 🏢 Description: We are seeking a Frontend React Mid Developer to build and scale modern, high-performance frontend applications for a client in the lottery industry. Our expectations Commercial experience as a Frontend Developer (Mid level) specializing in the React ecosystem; Strong knowledge of React.js, TypeScript, and JavaScript (ES6+); Knowledge of and experience working with HTML5, CSS3, and SCSS; Practical experience with React Hooks; Experience in application state management (Redux, Zustand, or Context API); Proficiency with Git version control and the GitHub platform; Experience in REST API integration, as well as a solid understanding of Responsive Web Design and component-driven development; English language skills at a level that allows fluent communication (B2). Readiness to work in a hybrid workmodel in a client's office (Warsaw), fostering a collaborative and engaging team environment. Welcome Skills Familiarity with component testing and documentation tools (Storybook, Cypress); Experience with the Next.js framework or React Native technology; Knowledge of 3D graphics libraries (Three.js) and accessibility standards (WCAG); Experience working with Headless CMS systems (e.g., Agility CMS); Basic knowledge of or exposure to cloud environments (AWS or Azure). Key tasks Create and develop frontend applications using the React library, TypeScript, and modern JavaScript (ES6+); Design and implement reusable UI components and efficiently manage application states; Collaborate with the backend team and integrate applications with APIs (REST API); Create responsive and polished user interfaces (RWD) using HTML5, CSS3, and SCSS; Use the Git/GitHub version control system in daily team collaboration; Maintain high code quality, apply best programming practices, and participate in the code review process; Collaborate with the cross-functional team (developers, testers, designers) to optimize application performance.

🏢 Summary: Frontend Developer role focused on building and developing a modern web application for the digital marketing industry using React and Next.js, with AI and recommendation-based solutions. The position involves creating user interfaces from Figma designs, integrating APIs, and collaborating closely with a Python backend team in a fully remote environment. The offer includes development opportunities, modern equipment, and a comprehensive benefits package. 🗂️ Requirements: Minimum 4 years of experience with React, Minimum 4 years of experience with Next.js, Very good knowledge of HTML, Very good knowledge of CSS, Very good knowledge of JavaScript ES6+, Practical knowledge of TypeScript, Experience with Git, Experience building applications integrated with APIs, Ability to work with Figma designs, Ability to work independently and take ownership, Ability to collaborate across teams in a dynamic environment, English communication skills 📃 Skills: React, Next.js, HTML, CSS, JavaScript, TypeScript, Git, API, Figma, Python, PostgreSQL, BigQuery, GCP 🏢 Description: Szukamy Frontend Developera do naszego zespołu, który rozwija aplikację webową dla branży digital marketingu. Budujemy rozwiązania wykorzystujące AI i algorytmy rekomendacyjne, a frontend rozwijamy w React i Next.js, we współpracy z backendem opartym o Pythona. Całość działa w oparciu o PostgreSQL, BigQuery oraz Google Cloud Platform. Zakres zadań: tworzenie i rozwój nowoczesnej aplikacji webowej z wykorzystaniem React i Next.js; implementacja interfejsów użytkownika na podstawie projektów przygotowanych w Figmie; integracja aplikacji z API oraz ścisła współpraca z zespołem backendowym; dbanie o jakość kodu, wydajność i rozwój istniejących rozwiązań. Wymagania: min. 4 lata doświadczenia w pracy z React oraz Next.js; bardzo dobra znajomość HTML, CSS oraz JavaScript (ES6+); praktyczna znajomość TypeScript; doświadczenie w pracy z Git; doświadczenie w tworzeniu aplikacji komunikujących się z backendem poprzez API; umiejętność pracy z projektami przygotowanymi w Figmie; ownership mindset — bierzesz odpowiedzialność za swoje rozwiązania i potrafisz działać samodzielnie; dobrze odnajdujesz się we współpracy z różnymi zespołami, w środowisku wieloprojektowym, dynamicznie zmieniającym się; znasz angielski na poziomie pozwalającym na swobodną komunikację (w mowie i piśmie). Oferujemy: pracę w 100% zdalną; MacBooka służbowego oraz sprzęt potrzebny do komfortowej pracy; środowisko sprzyjające rozwojowi i zdobywaniu nowych umiejętności; kulturę pracy opartą na otwartości – możesz zadawać pytania, dzielić się pomysłami i mieć realny wpływ na rozwiązania; zespół zaangażowanych i kreatywnych osób, z którymi po prostu dobrze się pracuje; pakiet benefitów: prywatna opieka medyczna, karta sportowa, ubezpieczenie grupowe oraz platforma wellbeingowa.

🏢 Summary: Offer for an experienced Frontend React Developer to build and scale modern, high-performance frontend applications. The role focuses on developing user interfaces, integrating with REST APIs, and ensuring code quality and performance within an Azure Cloud environment. The position involves active participation in technical decisions and CI/CD processes. 🗂️ Requirements: Minimum 5 years of experience as Frontend Developer, Strong knowledge of React 18 and its ecosystem, Experience with TypeScript including advanced types and generics, Practical knowledge of PrimeReact and PrimeFlex, Experience with react-hook-form and Yup validation, Experience with REST API integration using Axios, Experience with Azure Cloud integration, Knowledge of frontend best practices and clean code principles, Proficiency with Git 📃 Skills: React, TypeScript, PrimeReact, PrimeFlex, react-hook-form, Yup, REST, Axios, Azure, Git, CI/CD 🏢 Description: About the project Poszukujemy Frontend React Developera do tworzenia i skalowania nowoczesnych, wydajnych aplikacji frontendowych. Our expectations Minimum 5 lat doświadczenia na stanowisku Frontend Developer; Bardzo dobra znajomość React 18 oraz jego ekosystemu (Hooks, Context API, optymalizacja wydajności); Doświadczenie w pracy z TypeScript, w tym zaawansowane typowanie i wykorzystanie generyków; Praktyczna znajomość PrimeReact oraz PrimeFlex w kontekście budowy interfejsów i responsywności; Doświadczenie w tworzeniu i obsłudze formularzy z wykorzystaniem react-hook-form oraz walidacji przy użyciu Yup; Umiejętność integracji z API (REST) przy użyciu Axios; Doświadczenie w projektowaniu oraz integracji rozwiązań w środowisku Azure Cloud; Znajomość dobrych praktyk frontendowych (clean code, modularność, testowalność); Biegłość w pracy z systemem kontroli wersji Git; Znajomość języka angielskiego na poziomie umożliwiającym swobodną komunikację (B2). Welcome Skills Doświadczenie w optymalizacji wydajności aplikacji frontendowych; Znajomość narzędzi testowych, takich jak Jest czy React Testing Library; Doświadczenie w pracy z procesami CI/CD, szczególnie w środowisku Azure. Key tasks Tworzenie i rozwijanie aplikacji frontendowych; Budowanie interfejsów użytkownika; Integracja z backendem przez API; Dbanie o jakość kodu i stosowanie dobrych praktyk; Poprawianie wydajności aplikacji i doświadczenia użytkownika; Udział w procesie wdrożeń (CI/CD); Udział w decyzjach technicznych.

🏢 Summary: Mid/Senior Frontend Developer role focused on building responsive UI views from Figma designs using React 18 and TypeScript. The position involves integrating new components into an existing architecture, managing state with Redux Toolkit, and ensuring WCAG-compliant accessibility. The developer will also handle API communication and maintain high code quality standards. 🗂️ Requirements: Advanced knowledge of React 18, Strong proficiency in TypeScript, Practical experience with Redux Toolkit, Experience with Axios for API integration, Strong knowledge of SCSS, Solid understanding of WCAG accessibility standards, Ability to convert Figma designs into responsive UI components, Experience working within existing project architecture and coding conventions 📃 Skills: React, TypeScript, ReduxToolkit, Axios, SCSS, WCAG, Figma 🏢 Description: Join a project focused on building and implementing sophisticated UI views based on Figma designs. This role requires a developer who not only excels in React 18 and TypeScript but also understands the critical importance of accessibility ( WCAG ). You will be responsible for integrating new views into an existing project structure, ensuring consistency with established coding conventions and library usage. Details Seniority: Mid/Senior. Stack: React 18, TypeScript, Redux Toolkit. Start Date: ASAP. Location: Remote. Communication: English required. Rate : up to 115 pln/h net B2B Responsibilities UI Implementation: Seamlessly converting Figma designs into functional, responsive web components. State & Data: Managing complex application state via Redux Toolkit and handling API communication with Axios . Accessibility: Ensuring all developed views meet WCAG requirements for inclusive user experiences. Code Quality: Writing testable, maintainable code that strictly adheres to the existing project's architecture and conventions. Styling: Delivering polished interfaces using SCSS and potentially Ant Design . Requirements Core: Advanced knowledge of React 18 and TypeScript . State Management: Practical experience with Redux Toolkit . API: Proficiency in using Axios for web services. Styling: Mastery of SCSS . Compliance: Solid understanding of WCAG standards. Nice to Have Experience with Ant Design (UI Library). Unit testing expertise with Vitest . Familiarity with Storybook for component documentation and testing.

🏢 Summary: Mid-level Web Portal Developer role focused on building scalable, type-safe web applications using React and Next.js. The position involves creating reusable UI components, implementing SSR/SSG, and ensuring high code quality through testing and modern tooling. You will work with modern state management and data fetching solutions in a collaborative development environment. 🗂️ Requirements: Advanced expertise in React, Strong proficiency in TypeScript, Experience with modern state management, Experience with asynchronous data handling, Experience with Next.js, Ability to implement SSR and SSG, Experience with unit and integration testing, Proficiency in English 📃 Skills: React, TypeScript, Next.js, Zustand, TanStackQuery, Axios, Storybook, StyledComponents, MUI, Formik, Zod, Yup, Vitest, ESLint, Prettier, SSR, SSG 🏢 Description: We are looking for a Mid-level Web Portal Developer to join our team. If you are passionate about clean architecture, type safety, and building scalable UI components with a modern stack, we want to hear from you. The Tech Stack Frontend: React, Hooks, TypeScript, Next.js State & Data: Zustand, TanStack Query, Axios UI/Design: Storybook, Styled Components, MUI, Formik, Zod/Yup Testing & Quality: Vitest, ESLint, Prettier What You’ll Do Develop: Create reusable, type-safe UI components and performant web apps. Architecture: Build and maintain visual components in isolation using Storybook . Optimize: Implement SSR/SSG with Next.js and manage efficient data fetching. Collaborate: Translate design mockups into functional components and participate in code reviews. Test: Write unit and integration tests with Vitest to ensure high reliability. Requirements Advanced expertise in React and TypeScript . Experience with modern state management and asynchronous data handling. Strong communication skills in English . Nice to have: Headless CMS experience (e.g., Agility CMS).

🏢 Summary: Frontend Developer role focused on building and evolving a large-scale, high-performance administrative web platform using React. The position emphasizes scalable architecture, code quality, automated testing, and integration with backend services. You will contribute to architectural decisions and maintain robust, maintainable frontend solutions in an enterprise environment. 🗂️ Requirements: 5+ years frontend development experience, Strong commercial experience with React, Expert knowledge of modern JavaScript (ES2024+), Advanced TypeScript proficiency, Experience integrating REST APIs, Hands-on experience with Webpack and Babel, Proficient with npm or yarn, Strong Git experience, Experience designing scalable frontend architectures, Experience with automated testing (unit, component, E2E) using Jest, React Testing Library, Cypress 📃 Skills: React, JavaScript, TypeScript, REST, Webpack, Babel, npm, yarn, Git, Jest, Cypress, GraphQL 🏢 Description: We are looking for an experienced Frontend Developer passionate about building scalable, high-performance user interfaces. In this role, you will contribute to the development and evolution of a large-scale administrative web platform, ensuring high code quality, maintainability, and performance. Key Requirements 5+ years of experience in frontend development, preferably in complex or enterprise-scale environments Strong commercial experience with React (state management, hooks, component lifecycle, application architecture) Expert knowledge of modern JavaScript (ES2024+) , including asynchronous programming and modular architecture Solid hands-on experience with TypeScript (advanced typing, generics, large-scale React integration) Experience integrating frontend applications with REST APIs (HTTP methods, authentication, data handling) Practical knowledge of build tools such as Webpack, Babel, npm/yarn Strong experience with Git (branching strategies, code reviews, conflict resolution) Experience designing and implementing scalable and high-performance frontend architectures Ability to write automated tests using Jest, React Testing Library, and Cypress Nice to Have Experience working with GraphQL in React-based applications Understanding and practical use of software design patterns Responsibilities Develop and enhance a complex React-based administrative platform Contribute to frontend architecture decisions and scalability improvements Maintain high standards of code quality (Clean Code, SOLID principles) Write and maintain unit, component, and end-to-end tests Collaborate with cross-functional teams in an agile delivery environment