Mid-level Front-End Engineer (React Native, Next.js)

About the role

You will join a Scrum team focused on the Luminus customer zone, modernising an existing application and delivering new features. The position is ideal for a developer who enjoys building high‑performing mobile and web experiences with React Native, Next.js and TypeScript.

Key responsibilities

• Develop and maintain mobile and web features using React Native and Next.js.
• Implement modern React patterns, concurrent features and strict TypeScript typing.
• Work with TanStack Query, React Hook Form and Zod for state and data management.
• Write unit, integration and accessibility tests (Jest, RTL, MSW) and ensure WCAG 2.1 AA compliance.
• Collaborate in Git workflows, Azure DevOps pipelines, code reviews and Docker‑based environments.
• Integrate authentication (Auth0 preferred) and apply modern web security practices.

Required profile

• 3+ years of front‑end development experience.
• Strong problem‑solving mindset with a focus on performance and accessibility.
• Attention to detail and ability to work in an Agile/Scrum environment.
• Good communication and teamwork skills.

Required skills

• React Native (medior level)
• React 18+ and TypeScript
• Next.js 14+ (App Router, Middleware, SSR/SSG/ISR)
• TanStack Query, React Hook Form, Zod
• Jest, React Testing Library, MSW
• WCAG 2.1 AA testing
• Git, Azure DevOps pipelines, Docker basics
• Feature‑flagging tools, Growthbook
• Auth0 integration, middleware authentication, web security best practices