Senior Front-End Developer

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.