Thrive IT Systems

Frontend Lead (React)

In short

This is a Frontend Lead role focused on React, TypeScript, and modern JavaScript, building complex enterprise-grade web applications with Redux Toolkit, Redux Saga, and Micro Frontend architecture. The company is an IT services and consulting firm hiring for a hybrid position in Warsaw or Cracow. The role combines hands-on senior development with mentoring developers and driving frontend engineering best practices, and requires mandatory experience with Angular, React, TypeScript, and JavaScript. It's offered as a 12-month B2B contract with one office day per week.

About: Thrive IT Systems provides IT services and IT consulting.
Responsibilities:
•Collaborate with Product Managers, UX/UI Designers, and Backend teams to translate business requirements into intuitive, accessible, and user-friendly interfaces
•Mentor developers, conduct code reviews, and drive frontend engineering best practices
Requirements:
•Strong hands-on experience with React.js, TypeScript, and modern JavaScript ES6
•Proven experience building complex, scalable, enterprise-grade web applications
•Strong expertise in Redux Toolkit, Redux Saga, RTK Query, and React Query for state management and data fetching
•Deep understanding of modern frontend architecture, design patterns, and component-driven development
•Experience with Micro Frontend architecture and modern frontend development practices
•Proficiency in HTML5, CSS3, SCSS, and responsive web design
•Strong experience integrating and consuming REST APIs
•Experience designing and implementing reusable, maintainable, and scalable UI components
•Strong knowledge of frontend performance optimization, accessibility standards, and cross-browser compatibility
•Experience with modern build and development tools such as Vite, Webpack, and CI/CD pipelines
•Hands-on experience using modern AI-powered development tools such as GitHub Copilot or similar coding assistants to improve developer productivity and software delivery
•Strong communication, problem-solving, and stakeholder management skills
•Mandatory skills: Angular, React, TypeScript, JavaScript
Conditions:
•12-Month B2B contract
•Warsaw or Cracow; hybrid work with 1 day a week in the office

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