Senior/Lead React Developer

For our client wew are looking a Senior Frontend Engineer. You will play a key role in building a modern React-based micro-frontend architecture for banking systems. You will design and implement scalable frontend modules, develop high-quality user interfaces for Back Office applications, and ensure performance, security, and maintainability across the platform. This is a hands-on role combining technical leadership and active development, suited for an engineer experienced in React, TypeScript, and complex enterprise environments, working with backend integrations via REST APIs and GraphQL.  Project/Client: Banking, Location: Baltic states + Poland, Start Date: ASAP, Seniority: Senior / Lead, Language: English Key Responsibilities: Lead and mentor a team of React developers, providing technical guidance and conducting code reviews Design and implement scalable micro-frontend architecture using modern frontend tooling Develop high-quality frontend solutions using React , TypeScript , and state management ( Redux , Zustand , Context API ) Build and maintain reusable UI components, shared libraries, and design systems Collaborate with backend teams on integrations via REST APIs and GraphQL Ensure best practices in performance, security, and accessibility Contribute to CI/CD , automated testing ( Vitest , React Testing Library , Playwright ), and code quality improvements Utilize modern development workflows, including AI-assisted tools (e.g., Copilot , Bmad workflow ) Must-Have Requirements: 5+ years of experience in frontend development with strong expertise in React Strong proficiency in TypeScript and modern JavaScript (ES6+) Hands-on experience with micro-frontend architecture Experience with state management solutions ( Redux , Zustand , Context API ) Experience using AI-assisted development tools (e.g., Copilot ) Solid understanding of CSS , SASS , and responsive design principles Experience with testing frameworks such as Vitest , React Testing Library , and Playwright Familiarity with CI/CD , Git , and Agile development practices Strong understanding of REST APIs , GraphQL , and frontend-backend integration Experience mentoring developers and leading technical decisions Nice to Have: Experience in banking or enterprise environments Knowledge of backend technologies such as Java , Spring Boot , Spring Security Familiarity with event-driven architectures (e.g., Kafka ) We offer:  Remote full-time work B2B contract Salary: 5500 - 7000 EUR (negotible) Recruitment Process: CV Screening: Applications are reviewed within 24 hours. Pre-Screening Interview: A brief Q/A session ( Automated or with a Recruiter ) designed to learn more about your experience related to the required job position. Automated Session (Recommended) – You can complete this session on your own at a time that is convenient for you. The questions and follow-ups are well-structured and designed to highlight your experience and provide detailed insights into your background. This option is recommended because it's usually more detailed and allows us to provide feedback from the hiring manager faster. Session with a Recruiter – You can also have the session with a recruiter. The questions are the same, but the discussion may be a bit less detailed, and feedback might take a little longer. Shortlisting: Qualified candidates are presented to the hiring manager for review. Formal Interviews: On-site discussions with the hiring manager or project team, with feedback provided within 1-2 weeks. Offer and Onboarding: Successful candidates receive a formal offer and begin a structured onboarding process. Information about the processing of your personal data is provided in our Privacy Policy, which is available online at Privacy Policy