React Developer

Nasze wymagania: 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. O projekcie: We are seeking a skilled Mid/Senior React Developer to join our team. Zakres obowiązków: 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 Oferujemy: 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.TypeScript