Senior Front-End Developer

Capitole; Bilbao; Presencial; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A tech company in Bilbao is seeking a Senior Front-End Engineer with extensive experience in code architecture and complex API integrations. The role requires strong skills in JavaScript and TypeScript, and the ability to lead architectural decisions. Candidates should be fluent in English and Spanish. This position demands on-site presence with some travel to Barcelona every month and a half.

Formación

• 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.

Responsabilidades

• Lead architectural decisions in projects.
• Mentor other developers and review code.
• Manage integrations with complex APIs.

Conocimientos

React or Next.js experience

JavaScript / TypeScript expertise

Performance optimization

Experience with API integrations

Mentoring capabilities

Fluent in English (C1)

Fluent in Spanish (B2)

Descripción del empleo

Senior Front-End Engineer

CAPITOLE

We are looking to reinforce our team with a Senior Front-End Engineer who has solid experience in code architecture and algorithms, capable of making complex technical decisions and structuring medium to large-scale applications.

Location: On-site presence required

Once 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 their impact on 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.

Still don’t know us? Discover more: check what others are saying on Glassdoor.

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.