Senior Front-end Developer (Contract)

Jobgether; España; Presencial; EUR 70.000 - 100.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive compensation

Growth opportunities

Mentorship & knowledge sharing

Collaborative, diverse environment

Descripción de la vacante

Jobgether, in Spain, seeks a Senior Front-end Developer (Contract) to lead high-quality web experiences for client projects. You will mentor developers, drive architecture decisions, and collaborate with stakeholders to translate requirements into responsive UI using TypeScript, HTML, CSS, and React.

You'll own code quality, performance, and accessibility across desktop and mobile, while promoting modern practices and scalable front-end solutions.

Formación

• 5+ years of frontend development experience with production web apps.
• Proficiency in HTML, CSS, and TypeScript.
• Extensive React experience including complex state management.
• English fluency, both written and spoken.

Responsabilidades

• Lead the design and implementation of high-quality front-end solutions.
• Collaborate with clients, teams, and leadership to deliver digital experiences.
• Develop tested, documented TypeScript, HTML, and CSS code.
• Build responsive desktop and mobile applications across browsers.
• Mentor junior and mid-level developers and promote best practices.
• Drive modern development standards, tooling, and engineering practices.
• Ensure accessibility, UX, and SEO considerations in development.
• Produce technical documentation and test plans, maintaining code quality.
• Manage multiple projects and deadlines with reliable delivery.

Conocimientos

HTML

CSS

TypeScript

React

Git workflows

Browser testing

Performance optimization

UX principles

SEO basics

Leadership

Communication

Educación

Bachelor's degree in Computer Science or related field

Herramientas

Next.js

CMS

Descripción del empleo

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Front-end Developer (Contract) based in Spain.

As a Senior Front-end Developer, you will lead the development of high-quality, responsive, and performant web experiences within a collaborative, client-focused environment. You will translate technical and business requirements into intuitive digital solutions across desktop and mobile. The role combines hands-on development with technical leadership, mentoring, and stakeholder collaboration. You will work extensively with TypeScript, HTML, CSS, and React while helping drive modern development standards and best practices. Your expertise will contribute to scalable architectures, polished user experiences, and reliable application performance. This is an opportunity to influence both technical direction and the quality of digital products delivered to clients.

Accountabilities

• Lead the design and implementation of high-quality front-end solutions aligned with technical and business requirements.
• Collaborate closely with clients, team members, stakeholders, and leadership to deliver effective digital experiences.
• Develop tested, documented, clean, and efficient TypeScript, HTML, and CSS code.
• Build responsive, cross-browser-compatible applications optimized for both desktop and mobile environments.
• Develop interactive prototypes to explore and validate innovative UI solutions.
• Drive the adoption of modern development standards, tools, frameworks, and engineering practices.
• Apply UX, branding, responsive design, and SEO principles throughout the development lifecycle.
• Conduct browser testing, debugging, and performance optimization to ensure reliable and performant applications.Produce detailed technical documentation and test plans while maintaining high-quality codebases.
• Mentor junior and mid-level developers, encouraging best practices, knowledge sharing, and professional growth.
• Build trusted relationships with clients, colleagues, and stakeholders while serving as a reliable technical advisor.
• Manage multiple projects and priorities effectively while consistently meeting agreed deadlines and commitments.
• Provide code samples as part of the application process, with one repository that best represents your relevant work.

Requirements

• 5+ years of professional experience in front-end development, with proven experience delivering production web applications.
• Deep proficiency in HTML, CSS, and TypeScript.
• Extensive hands-on experience with React, including complex state management and front-end architecture.
• Strong knowledge of Git workflows, branching strategies, and collaborative development practices.
• Demonstrated ability in browser testing, debugging, troubleshooting, and performance optimization.
• Solid understanding of the complete web development lifecycle, from design and development through deployment.
• Advanced knowledge of UI/UX principles, design patterns, responsive design, and web accessibility considerations.
• Solid understanding of SEO best practices for modern web applications.
• Strong leadership, mentoring, analytical, multitasking, and problem-solving skills.
• Excellent communication and stakeholder management abilities, with the confidence to work effectively with both technical and non-technical audiences.
• Ability to work across multiple projects in a fast-paced environment while remaining organized, dependable, and deadline-oriented.
• Intermediate to fluent spoken English and fluent written English.
• Professional experience with Next.js is considered an advantage.
• Experience with additional front-end frameworks and content management systems (CMS) is a plus.
• A Bachelor's degree or equivalent professional experience in Computer Science, Information Systems, Business Administration, or a related field is desirable.

Benefits

• Competitive contract compensation.
• Opportunities to collaborate with cross-cultural teams and work in a diverse, collaborative environment.
• Opportunities for professional growth, mentorship, and continuous learning.
• Support for developing technical skills and staying current with modern technologies and development practices.
• A people-focused environment where employees are encouraged to contribute meaningfully and develop their expertise.
• For eligible US-based employees, the broader benefits package includes health, dental, vision, life, and disability insurance, as well as a 401(k) plan with up to a 4% company match.
• US-based employees also benefit from self-managed personal time off and ongoing learning and professional development opportunities.

Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.

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