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Urgent! Senior Frontend Engineer Job Opening In Barcelona – Now Hiring Capitole

Senior Frontend Engineer



Job description

Opportunity – Frontend Engineer (Fullstack-Oriented)
About the role
We are looking for a Frontend Engineer (Fullstack-Oriented) to join one of our international clients’ innovation and data-driven teams.

The role involves building user-centric, responsive, and high-performing web applications , while collaborating on backend tasks to deliver seamless and scalable solutions.
You will work in an agile, multicultural environment, contributing to projects at the forefront of data, AI, and digital transformation .
What you’ll do
Design and develop modern, responsive user interfaces using React and Next.js .
Collaborate on backend development tasks using Node.js (Fastify) .
Integrate and optimize RESTful APIs for smooth frontend-backend communication.
Contribute to system architecture and ensure scalability, maintainability, and performance.
Implement CI/CD pipelines and automated testing for robust deployments.
Utilize Docker and Kubernetes for containerization and environment management.
Participate in InnerSource/Open Source initiatives to drive innovation and best practices.
Work in Agile teams alongside developers, data experts, and architects.
Must Have
5+ years of experience in software engineering, developing complex or distributed applications.
Strong proficiency with React , Next.js , and modern JavaScript/TypeScript .
Experience styling with Tailwind , CSS Modules , or Styled Components .
Familiarity with Node.js (preferably Fastify) for backend collaboration.
Knowledge of SQL/NoSQL databases .
Experience with CI/CD pipelines , Docker , and Kubernetes .
Understanding of software architecture , fault tolerance, and scalability principles.
Strong communication skills in English (written and spoken).
✨ Nice to Have
Experience with data visualization libraries such as D3.js or Chart.js .
Familiarity with GitHub Actions , GitOps , or workflow automation.
Exposure to OpenShift or other enterprise Kubernetes environments.
Knowledge of Python for scripting or data-related tasks.
Experience in international or cross-functional teams within data or innovation projects.
Why join this project?
People first – diverse and inclusive culture in an international environment.
Cutting-edge technologies and global projects.
Career growth and continuous development opportunities.
Happiness and low turnover rate.
€1200 per year training budget and learning resources.
Flexible compensation.
Private health insurance and benefits package.
⚡ Flexible working hours and hybrid model.
️ Wellhub: access to fitness, wellness, and mental health support.
⚽ Football and paddle tennis teams sponsored by Capitole.
Team buildings, global events, and strong tech communities.
✨ Want to know more about us?

Click here and discover all the details.
Find out what people are saying about us on .
We know that not every candidate will meet 100% of the requirements.

If your profile doesn’t match perfectly but you believe you can add value, we would still love to hear from you!
Ready for the challenge?

Apply now and be part of a global digital leader driving innovation and transformation.
Empowering People, Unlocking Innovation.
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.


Required Skill Profession

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