Front-End Engineer

Senior Front-End Engineer

In CAPITOLE we are looking to reinforce our team with Senior Front-End Engineer with solid experience in code architecture and algorithmics, capable of making complex technical decisions and structuring medium / large scale applications.

Location : On-site presence required 1 time every month and a half in Barcelona.

Job Requirements

Proven experience leading architectural decisions in complex React or Next.Js projects.

Deep expertise in JavaScript / TypeScript and advanced design patterns.

Strong ability to optimize performance and manage rendering strategies (SSR, CSR, ISR).

Solid grasp of data structures and algorithms , and how they impact front-end performance.

Experience working with complex API integrations and modern state management (Zustand, Redux, TanStack, etc.).

Capable of mentoring other developers and reviewing code with a focus on quality and scalability.

Languages : English - C1 / Spanish -B2.

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The employee will adhere to information security policies :

• Will have access to confidential information related to Capitole and the project they are working on.
• Must comply with the security policies and internal policies of the company and the client.
• Must sign an NDA.