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# Senior JavaScript (React) Developer

- **Company:** Vistex GmbH
- **Location:** Walldorf, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Multitier Architecture, Amazon Web Services, Microsoft Azure, Cascading Style Sheets (CSS), Cloud Computing, Code Review, Continuous Integration, Entity Framework, Object-Oriented Software Development, Scrum Methodology, Responsive Web Design, TypeScript, Web Content Accessibility Guidelines, WebRTC, Network Routers, ReactJS, Backend, Git, Build Management, Webpack, Solid Principles, Front End Software Development, React Redux, Software Coding, Restful APIs, Domain Driven Design, Api Management, Docker, Microservices
- **Published:** September 14, 2026
- **Apply:** https://www.xing.com/jobs/walldorf-senior-javascript-react-developer-155088425

## About the Role

Experience with JavaScript, React and TypeScript, including Hooks, Context API, and component-driven architecture
Proven ability to design and build RESTful APIs, microservices, and complex backend services with practical experience in Docker-based deployments
Advanced state management and data fetching using React Query, Redux Toolkit, and Entity Framework
Solid understanding of Clean Architecture, SOLID principles, OOP, and Domain-Driven Design (DDD)
Proficiency in modern frontend styling and standards, including CSS/SCSS, responsive design, and WCAG accessibility
Proficiency with Git, CI/CD pipelines, and Agile/Scrum methodologies
Good knowledge of cloud platforms and hands-on experience with Azure and/or AWS
Strong analytical, problem-solving, and technical communication skills
Excellent command of English, both written and spoken

## Description

* designing and scaling complex applications (using TypeScript, React, React Query, Redux, Vite, React Router), defining the evolution of frontend architecture, state management, and data-fetching strategies
 * lead technical analysis and solution design for major features, driving improvements in coding standards and engineering practices across the UI domain
 * owning the quality, performance, accessibility, and maintainability of frontend solutions, ensuring operational stability from development to production
 * collaborating with backend teams to define API contracts and integrating services using REST, authentication, and real-time communication patterns
 * resolving complex, ambiguous technical challenges across components and providing clear architectural direction for the team
 * coaching and mentoring mid-level and junior developers through structured feedback, pairing, and leading high-standard code reviews.
 * partnering with Product, UX/UI, and QA to translate requirements into seamless end-to-end user experiences.
 * driving tooling, testing, and CI/CD improvements to enhance deployment processes and team productivity
 * contributing to long-term technical strategy, shared component libraries, and design system evolution


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