Senior Front-End Engineer

About the role

Quento Technologies S.A., the ICT arm of the Qualco Group, is looking for a highly motivated Senior Front‑End Engineer to design, build and evolve secure, high‑quality web applications using modern React and Next.js technologies. You will work in a collaborative environment, delivering scalable and accessible digital experiences for global clients.

Key responsibilities

• Design, develop and maintain responsive, production‑ready web applications with Next.js 15, React and TypeScript.
• Build reusable UI components and front‑end modules to ensure consistency and efficient delivery.
• Manage server‑state, caching and asynchronous data flows using TanStack Query.
• Implement secure authentication and authorization flows with Microsoft Authentication Library (MSAL).
• Create robust, accessible forms with React Hook Form and Zod validation.
• Translate UI/UX designs into high‑quality, responsive interfaces using Tailwind CSS.
• Integrate front‑end applications with REST APIs, handling errors and loading states gracefully.
• Optimize performance, accessibility and cross‑browser compatibility.
• Write clean, testable, well‑documented code following engineering standards.
• Participate in code reviews, architectural decisions and continuous improvement.
• Collaborate with product owners, designers, back‑end engineers, QA and DevOps teams.
• Support automated build, quality and deployment processes in Azure DevOps.

Required profile

• University degree in Information Technology, Computer Science, Engineering or a related field.
• Minimum of 5 years of professional front‑end development experience.
• Strong hands‑on experience with TypeScript and modern React ecosystem.

Required skills

• Next.js (v15)
• React
• TypeScript
• TanStack Query (React Query)
• Microsoft Authentication Library (MSAL)
• React Hook Form with Zod
• Tailwind CSS
• REST API integration
• Azure DevOps pipelines