React Developer

🏢 Summary: Frontend-focused role developing and maintaining scalable React applications with TypeScript, integrated with Node.js backend services and data pipelines. The position involves building production-grade, data-driven solutions, contributing to architecture decisions, and optimizing complex UI workflows. It offers work on a high-impact product within a modern TypeScript and React ecosystem. 🗂️ Requirements: Strong proficiency in React, Strong proficiency in TypeScript, Experience building large-scale production applications, Experience with Node.js and API integrations, Experience with data-driven applications, Understanding of modern frontend architecture, Knowledge of testing practices, Ability to work in cross-functional teams 📃 Skills: React, TypeScript, Node.js, APIs, Microservices, Snowflake, Testing, Architecture, Data, Pipelines 🏢 Description: ✅ Your responsibilities: Develop and maintain scalable React applications with TypeScript across the full frontend stack Collaborate closely with backend engineers, data teams, and product managers to deliver high-quality solutions Ensure type safety, code quality, and maintainability throughout the application Participate in design and architecture discussions, proposing improvements to frontend patterns and integrations Troubleshoot and optimize complex UI and data-intensive workflows Support knowledge sharing and mentor junior developers when needed 🧠 Our requirements: Strong proficiency in React and TypeScript , with experience building large-scale, production-grade applications Familiarity with Node.js backend development and integration with APIs or microservices Experience working with data-driven applications , ideally with Snowflake, data lakes, or pipelines Solid understanding of modern frontend architecture, testing, and best practices Ability to communicate effectively in a cross-functional, high-stakes environment Proactive, self-motivated, and capable of delivering high-quality solutions under tight timelines 🌟 What we offer: Opportunity to work on a premium, high-profile product with global business impact Exposure to a modern TypeScript/React ecosystem, integrated with backend Node.js services and advanced data pipelines Collaborative environment with experienced engineers and product leaders Career growth and technical mentorship in a cross-functional team Competitive employment package and benefits.

🏢 Summary: Mid/Senior React Developer role focused on end-to-end frontend feature delivery using strict TypeScript, shared cross-platform architecture, and AI-augmented workflows. The position emphasizes monorepo-based unified codebases, strong testing discipline, performance optimization aligned with Core Web Vitals, and secure coding practices. The developer owns code quality, performance, and maintainability across Web and Mobile platforms. 🗂️ Requirements: Strong React experience with lifecycle and hooks, Production experience with strict TypeScript, Experience with monorepo tools (Turborepo or Nx), Ability to build shared cross-platform components and abstractions, Unit and integration testing with Vitest or Jest, Proficiency with React Testing Library, Understanding of Core Web Vitals (LCP, INP, CLS) optimization, Experience with performance profiling and optimization techniques, Knowledge of OWASP Top 10 and frontend security practices, Experience using AI tools or agents to enhance development workflow 📃 Skills: React, TypeScript, JavaScript, Turborepo, Nx, Vitest, Jest, TestingLibrary, AI, LCP, INP, CLS, OWASP, ReactNative, Monorepo, WebPerformance, Security 🏢 Description: We are seeking a skilled Mid/Senior React Developer to join our team. Responsibilities Feature Delivery & Code Quality Own end-to-end delivery of frontend features from UI/UX implementation to complex business logic. Write production-grade TypeScript with strict type safety and comprehensive test coverage Participate in code reviews with a focus on maintainability, performance, security, and accessibility. Unified Codebase Contribution Develop shared components, hooks, and utilities that work across Web and Mobile platforms Ensure code reusability through proper abstraction and monorepo discipline Collaborate with architects to identify opportunities for cross-platform unification Document patterns and decisions for team knowledge sharing AI-Augmented Development Leverage AI-powered workflows to accelerate repetitive tasks: refactoring, test generation, code profiling Use agents for code review assistance, documentation generation, and debugging Continuously optimize your development velocity through appropriate AI tooling Share effective workflows with the team to elevate collective productivity Performance Ownership Treat performance as an architectural constraint, not a post-hoc optimization Monitor and improve Core Web Vitals (LCP, INP, CLS) for web applications Qualifications React Production Experience Deep understanding of React lifecycle, hooks patterns, and performance optimization. Experience with strict TypeScript in real codebases. AI Augmentation Proficiency Demonstrated experience using AI agents to enhance development workflow. Ability to articulate specific examples of how you've used AI tools to improve productivity Understanding of when AI assistance adds value and when manual approaches are more appropriate. Familiarity with agent orchestration concepts beyond basic autocomplete. Monorepo & Unified Codebase Mindset Experience with Turborepo, Nx, or similar tools. Understanding of shared logic, types, and component patterns across platforms. Testing Discipline Unit and integration testing with Vitest or Jest. React Testing Library proficiency. Commitment to maintaining test coverage on critical paths. Performance Engineering Mindset Understanding of Core Web Vitals (LCP, INP, CLS) and their optimization strategies. Ability to articulate the business impact of performance. Experience with performance budgets, profiling tools, and optimization techniques. For candidates declaring React Native experience: awareness of bridge overhead, list virtualization, and memory management. Security Awareness Understanding of OWASP Top 10 and common frontend security vulnerabilities. Secure coding practices for authentication, authorization, and data handling. Awareness of dependency security and supply chain risks. Language Skills & others English B2+ (mandatory) for technical documentation and cross-team collaboration. Readiness to work from our Warsaw office at least 1 day per week. Benefits Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere. Agile approach and no bureaucracy. Outstanding integration trips to various places in Europe for all employees. Activities to support your well-being and health. Luxmed Gold Extended medical care and Multisport Plus benefit. Engagement in innovative projects within a supportive and collaborative environment. Flexible working arrangements to promote work-life balance. Access to modern tools and technologies to enhance productivity.

🏢 Summary: Senior Frontend React Developer role focused on building scalable Next.js applications that power enterprise AI interfaces, including chat, semantic search, and knowledge graph features. The position involves developing high-performance, real-time, and data-intensive user interfaces with strong emphasis on accessibility, security, and code quality. You will contribute to reusable design systems, performance optimization, and AI-assisted development in a modern tech stack. 🗂️ Requirements: 5+ years frontend development experience, 3+ years experience with React, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of Next.js including SSR, App Router, Server Components, Advanced TypeScript skills, Experience with modern CSS solutions (Tailwind CSS or CSS-in-JS), Experience with complex state management, Experience with real-time collaboration features, Experience building AI-related interfaces (chat, streaming, semantic search), Understanding of localization, Understanding of accessibility standards, Understanding of security standards, Experience with AI coding tools (OpenAI Codex or Claude), Upper-Intermediate (B2) English or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, SSR, Tailwind, CSS-in-JS, SWR, WebSockets, ReactFlow, Highcharts, Storybook, Playwright, Node.js, Python, AWS, S3, CloudFront, Lambda, OpenAI, Claude, Codex, Copilot, Puppeteer, Cypress, Lerna, Turborepo, Nx, MCP, DSPy 🏢 Description: About Us Many companies want to use AI agents, but these tools often have problems with real business tasks. We create a platform that helps AI understand company rules, workflows, and processes, so it can give correct and reliable answers. Our technology is trusted by large international companies and works with leading AI and cloud platforms. Our goal is to help people find better answers and make better decisions with AI. Senior Frontend React Developer As a Frontend React Developer, you will build modern user interfaces that make enterprise AI easy to use and reliable. You will create Next.js applications that work with large amounts of data, real-time AI responses, and advanced business features. Your work will help thousands of users access important information quickly and confidently. What You Will Do Design and develop scalable Next.js SSR applications. Build interfaces for AI chat, semantic search, knowledge graphs, and AI builders. Create data visualizations using libraries such as React Flow and Highcharts. Develop multilingual, accessible, secure, and cross-browser compatible applications. Work with SWR for data fetching, caching, and real-time websocket updates. Build and maintain reusable UI components and a Storybook design system. Improve application performance, monitor Core Web Vitals, and write automated tests with Playwright. Use AI coding assistants to speed up development while keeping high code quality. Participate in code reviews, share knowledge, and support continuous learning within the team. Requirements At least 5 years of frontend development experience. More than 3 years of experience with React and JavaScript/TypeScript. Strong knowledge of Next.js, including SSR, App Router, and Server Components. Advanced TypeScript skills and experience with modern CSS solutions such as Tailwind CSS or CSS-in-JS. Experience building applications with complex state management, real-time collaboration, and high performance. Experience creating interfaces for AI features such as chat systems, streaming responses, or semantic search. Understanding of localization, accessibility, security standards, and writing maintainable code. Experience using AI coding tools such as OpenAI Codex or Claude. Upper-Intermediate (B2) or higher English communication skills. Nice to Have Experience with React Flow, Highcharts, or similar visualization libraries. Basic backend knowledge in Node.js or Python and experience discussing API design. Experience with vector search, RAG interfaces, or semantic search solutions. Familiarity with MCP, DSPy, or other AI frameworks. Experience with monorepo tools such as Lerna, Turborepo, or Nx. Knowledge of AWS services like S3, CloudFront, and Lambda. Experience with Playwright, Puppeteer, or Cypress. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack and opportunities 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. Our Values We believe our success comes from the way we work together: Quality – We aim for excellent work and high standards in everything we do. Momentum – We take initiative and keep projects moving forward. Accountability – We take responsibility and give honest, respectful feedback. Hard Work – We solve difficult problems together and stay committed to our goals. Learning – We are curious, improve every day, and learn from mistakes. Adaptability – We accept change and see challenges as opportunities. Teamwork – We communicate openly, support each other, and succeed as one team.

🏢 Summary: Frontend Developer role focused on designing, developing, testing, deploying, and maintaining React and TypeScript applications used across multiple European markets. The position involves working with modern frontend technologies, integrating with REST/GraphQL APIs, and supporting production systems. The role requires strong software engineering expertise and collaboration within Agile teams. 🗂️ Requirements: 5+ years of production experience with React, Strong proficiency in TypeScript, Strong understanding of software engineering principles, Experience with testing and design systems, Experience with REST APIs, Experience with GraphQL APIs, Familiarity with PostgreSQL or DynamoDB, Computer Science degree, Experience with AI tooling, Experience working in Agile (SCRUM or Kanban) environments 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST, GraphQL, AWS, Terraform, PostgreSQL, DynamoDB, Docker, Kubernetes, Jenkins, CircleCI, GitlabCI, Datadog 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST/GraphQL APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in React & TypeScript Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Required qualifications: 5+ years of production software development experience in React Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST/GraphQL APIs Familiarity with DBMS like PostgreSQL, DynamoDB Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 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: Frontend Developer role focused on building and maintaining modern web applications using React.js. The position involves creating responsive, user-centered interfaces, integrating RESTful APIs, and delivering scalable, maintainable frontend solutions. Emphasis is placed on performance, accessibility, and clean code standards. 🗂️ Requirements: 3–4+ years commercial frontend development experience, Strong hands-on experience with React.js, Proficiency in modern JavaScript (ES6+), Solid knowledge of HTML5 and CSS3, Experience with responsive design principles, Experience integrating RESTful APIs, Understanding of UI/UX best practices, Familiarity with state management, Experience with component-based architecture, Experience with Git and collaborative workflows, Ability to write scalable and maintainable code, Strong debugging and problem-solving skills 📃 Skills: React, JavaScript, ES6, HTML5, CSS3, REST, API, Git, UI, UX 🏢 Description: Responsibilities Develop and maintain modern web applications using React.js . Create responsive and intuitive user interfaces with a strong focus on usability and user experience. Connect frontend applications with RESTful APIs and backend systems. Translate business and design requirements into scalable frontend solutions. Write clean, reusable, and maintainable code following frontend development standards. Collaborate closely with designers, product owners, and backend engineers. Optimize application performance, accessibility, and cross-browser compatibility. Requirements 3–4+ years of commercial experience in frontend development. Strong hands-on experience with React.js and modern JavaScript (ES6+). Solid knowledge of HTML5, CSS3, and responsive design principles. Experience integrating APIs and working with backend services. Understanding of UI/UX best practices and user-centered design. Familiarity with state management and component-based architecture. Experience with Git and collaborative development workflows. Ability to write efficient, scalable, and well-structured frontend code. Strong problem-solving and debugging skills.

🏢 Summary: Frontend Developer role focused on building and maintaining scalable, high-quality user interfaces using TypeScript and React. The position involves close collaboration with designers, backend developers, and product stakeholders to deliver performant and maintainable user-facing features. The offer includes hybrid work, professional growth opportunities, and a comprehensive social benefits package. 🗂️ Requirements: Extensive experience building large, scalable frontend applications, Strong proficiency in TypeScript, Strong proficiency in React, Solid understanding of frontend architecture, Knowledge of design patterns, Ability to design complex user interfaces, Experience ensuring code scalability and performance optimization 📃 Skills: TypeScript, React, JavaScript, HTML, CSS 🏢 Description: We are looking for a frontend developer who is passionate about designing and building high-quality, intuitive user interfaces. In this role, you will collaborate closely with engineers, designers, and product stakeholders to deliver user-facing features across a range of products and internal tools. We value developers who actively contribute to shaping solutions - thinking through usability, performance, and long-term maintainability. You should feel comfortable discussing ideas, proposing improvements, and helping refine both technical and product decisions. In our company, frontend developers are expected to combine attention to detail, strong collaboration skills, and a proactive mindset. We value people who take ownership of their work, communicate clearly, and continuously look for ways to improve the user experience and the systems behind it. Key Responsibilities: Develop and maintain high-quality frontend applications using TypeScript and React . Design complex user interfaces. Ensure the application’s code is scalable, consistent, maintainable and optimised for performance. Collaborate closely with UX/UI designers Collaborate closely with backend developers and BA/product managers Take ownership of features and technical decisions, diving into details to ensure high-quality results. Requirements: A proactive problem solver and analytical thinker . Keen attention to detail and willingness to dive deep into technical challenges. Extensive experience in building large, consistent, maintainable and scalable frontend applications. Solid understanding of frontend architecture and design patterns. Strong proficiency in TypeScript and React . Additional information: Working for one of the top gambling companies in the world Opportunity to influence the quality of the products, improve process and implement your ideas Social package, including sport compensation & medical insurance Professional growth Free parking space (hybrid type of work- 3 days from the office, 2 days from home) Sport activities, parties, and team buildings

🏢 Summary: Senior Frontend Developer role focused on designing, building, testing, deploying, and maintaining a React and TypeScript-based frontend system integrated with backend services and mobile apps. The position involves frontend architecture design, production support, and working within Agile teams to deliver scalable solutions used across multiple countries. 🗂️ Requirements: 5+ years of production experience with React, Strong hands-on experience with TypeScript, Strong understanding of software engineering principles, Experience with testing and design systems, Knowledge of REST APIs, Familiarity with DBMS such as PostgreSQL or DynamoDB, Degree in Computer Science, Experience working with Agile methodologies (SCRUM or Kanban), Experience using AI tooling 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, REST, PostgreSQL, DynamoDB, Testing, DesignSystems, Agile, SCRUM, Kanban, AI 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in React & TypeScript Design frontend software architecture with connection to backend services and mobile apps Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Scoping and assessing the complexity of features Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Recruiting and mentoring new team members Required qualifications: 5+ years of production software development experience in React Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST APIs Familiarity with DBMS like PostgreSQL, DynamoDB Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 Summary: Frontend React Developer role focused on building and scaling modern web applications using React and Next.js in distributed, cloud-based environments. The position involves developing reusable components, integrating with APIs and cloud services, and ensuring high performance, security, and code quality through testing and best practices. The role requires strong experience in scalable architectures and collaboration within microservices-based systems. 🗂️ Requirements: 5+ years of commercial experience with React, Strong knowledge of JavaScript and TypeScript, Practical experience with React hooks, routing, and state management, Experience in distributed systems or microservices environments, Experience with cloud platforms (GCP preferred), Experience building scalable applications consuming REST APIs and JSON, Knowledge of data structures and algorithms, Proficiency in HTML and modern CSS approaches, Experience with automated testing (unit, integration, end-to-end), Ability to debug and optimize applications using browser developer tools, Experience building responsive web interfaces 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML, CSS, Tailwind, SASS, CSSModules, REST, JSON, GCP, Microservices, UnitTesting, IntegrationTesting, E2E, BrowserTools, DataStructures, Algorithms 🏢 Description: We are looking for a Frontend React Developer for our client – a global technology consulting company focused on data, analytics, and cloud-based solutions, supporting international organizations in building scalable digital products. They operate in a distributed environment, combining strong engineering practices with a business-oriented mindset to deliver impactful solutions across multiple industries. Your responsibilities Build and enhance modern web applications using React and Next.js Create reusable components and contribute to scalable frontend architecture Work closely with cross-functional teams including backend engineers, data specialists, and product stakeholders Improve performance, security, and overall user experience of applications Connect frontend layers with APIs and cloud-based services Maintain high development standards through testing and clean coding practices. Requirements At least 5 years of hands-on experience with React in commercial projects Strong command of JavaScript and TypeScript Practical understanding of React fundamentals, including hooks, routing, and state management solutions Experience working in distributed systems or microservices environments Exposure to cloud platforms (GCP experience is an advantage) Background in developing scalable applications that consume REST APIs and work with JSON data Solid grasp of core programming concepts such as data structures and algorithms Good knowledge of HTML and modern CSS approaches (e.g. Tailwind, SASS, CSS Modules, or similar tools) Experience with automated testing (unit, integration, and end-to-end) Ability to debug and optimize applications using browser developer tools Experience in building responsive and user-friendly interfaces across devices Strong communication skills and experience working in collaborative, distributed teams Self-driven approach with a strong sense of ownership English proficiency at B2 + level or higher.

🏢 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.