React Developer

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 firmie: - Our business philosophy had been clarifying for a good few years, during which we gained experience in large and influential corporations. Based on well-established knowledge and best practices, we decided to build a Teal organisation in which we can fully: - • realize our mutual passion for IT, - • professionally support our clients in this area, - • use the best standards born from our experience, - • have fun creating a harmonious community, - • stay true to our values and treat every person with respect, - • say goodbye to hierarchical treatment and lack of empowerment, - • have a smile on our lips when we think about the next Monday, 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