Ofertes d'ocupació de Programador/a Front-End a Barcelona

• Nivell d'experiència---
• Tipus de contracteA temps complert
• PublicadaNova

Teletreball . React Javascript TypeScript QA Excel LESS Office

Join Proton and build a better internet where privacy is the default

At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online.

Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations.

Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online.

Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions.

We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here!

Purpose of the role:

As a Frontend Engineer on the Drive team, you will play a crucial role in developing Proton Drive. We expect you to be customer-centric, continuously learning, passionate about technology and usability. You are an adept at turning technical complexities into seamless user experiences. Effective teamwork, collaboration with Product, Design, APIs, and your team, and data-driven decision-making are essential aspects of this role.

What you will do:

• Develop new features: Developing, deploying and supporting high-quality user experiences within Proton Drive, including feature development and implementation.
• Collaboration: Work closely with backend, product owners, designers, QA, and other engineers to take initiatives from ideation to completion.
• Code review and optimization: Conduct code reviews and provide constructive feedback to ensure code quality, maintainability, and performance optimization.
• Testing: Develop and implement comprehensive testing strategies, including unit tests and integration tests, to ensure the reliability of core libraries.
• Management: Break down large initiatives into smaller milestones to gather stakeholder feedback quickly, allowing us to course-correct immediately.
  
  
  

Job Requirements:

• Deep understanding of JavaScript methodologies and design patterns
• Proficiency with TypeScript or any typed language
• Experience with React or 2+ similar frameworks, developing performant and reusable components
• Strong understanding of software engineering best practices, such as SOLID, Design Patterns, CI/CD
• A product mindset with a focus on offering the best user experiences
• Experience working in a distributed team
  
  
  

Bonus points for:

• Awareness of common security issues in client-side development, such as those in the OWASP top ten, and how to mitigate them
• Familiarity with UX, accessibility, internationalization, and localization concerns and solutions
• Experience with Grafana or other monitoring platforms
• Experience with breaking down product requirements into architecture design and implementation
• Experience with NodeJS
• High-level understanding of cryptography concepts such as key exchange and the difference between symmetric and asymmetric encryption
  
  
  

What We Offer:

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office. Depending on the role, fully remote positions may also be available.
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
• Flexible Working: You can define your own working hours as long as it works with team meetings.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.
• Vilnius: Salary can range from €50,000 to €88,000 (Exact compensation may vary based on skills and experience)
  
  
  

Our Commitment to Diversity and Inclusion

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.

Candidate Privacy Notice

When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.

If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at [email protected].

Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.

To learn more about our privacy policy, please visit our privacy policy page.

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada3 de gen.

Teletreball . React Javascript CSS HTML Micro Frontends UX/UI

Somos DDB, somos creadores de ideas.

Ayudamos a nuestros clientes a ser líderes.

Trabajamos con ellos como socios estratégicos.

Nos sumergimos en el negocio de nuestros clientes y buscamos soluciones creativas.

Iniciamos y mantenemos vivo el diálogo de las marcas con el consumidor.

Creamos ideas con trascendencia social porque sólo así tendremos relevancia.

Perfil

Buscamos un/a React Frontend Developer con especial interés en maquetación y UI, para incorporarse a nuestro equipo de Producción Digital, trabajando para una marca internacional líder en un entorno colaborativo y con proyectos reales en producción.

Formarás parte de un equipo multidisciplinar de más de 20 personas, desarrollando interfaces dentro de un ecosistema global basado en Micro Frontends / Feature Apps.

Responsabilidades

• Desarrollo de interfaces en React, con foco en maquetación y detalle visual.
• Construcción de componentes reutilizables usando Styled Components o soluciones similares.
• Traducción de diseños (Figma u otros) a código frontend de calidad.
• Trabajo con sistemas de diseño y librerías de componentes.
• Integración del frontend con APIs existentes.
• Mantenimiento y evolución de aplicaciones en producción.
• Colaboración estrecha con UX/UI, frontend senior y producto.
  
  

Requisitos

• Formación base en desarrollo frontend con React (bootcamp, grado, máster o similar).
• Buen conocimiento de HTML, CSS y JavaScript.
• Interés claro por la maquetación, el detalle visual y la UI.
• Ganas de aprender, crecer y trabajar en equipo.
• No es necesaria experiencia profesional previa en proyectos grandes.
  
  

Aportamos

• Primeros pasos en un proyecto real y de largo recorrido.
• Acompañamiento por perfiles frontend senior.
• Entorno ideal para crecer como React Developer.
• Arquitecturas modernas y buenas prácticas desde el inicio.
  
  

Todas las candidaturas serán consideradas para el empleo, independientemente de su raza, orientación sexual o edad.

¿Qué ofrecemos?

Modelo de trabajo híbrido: días presenciales en la oficina combinados con días de teletrabajo.

Ambiente de trabajo creativo y dinámico donde podrás desarrollar todo tu talento y podrás crecer personal y profesionalmente.

Nuestro programa DDB Concilia, con beneficios exclusivos por pertenecer a DDB, además de programas de bienestar emocional con servicios personalizados.

Todo esto y mucho más. ¿Te vienes?

Tu información personal se utilizará de acuerdo con nuestro Aviso de Privacidad. Puedes leer nuestro Aviso de Privacidad aquí cuando presentes tu solicitud.

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada26 de des.

. React Docker REST AWS PostgreSQL Office MariaDB

About Workfully

At Workfully, we’re building the first global recruitment marketplace where independent recruiters can grow, engage, and monetize their talent networks — connecting them to meaningful opportunities at innovative companies worldwide.

Our technology is designed to make recruiting more transparent, fair, and scalable. We’re a profitable early-stage company with clients like TravelPerk, OLX, Accenture, Inditex, and FreeNow, and we’re now expanding our engineering team to build the next generation of the Workfully platform.

The Role

We’re looking for a Mid–Senior Fullstack Engineer with a frontend focus to help us shape the face of Workfully.

You’ll work closely with design and product to build high-quality, performant user interfaces using React and Next.js, ensuring a smooth experience for both recruiters and candidates. You’ll care deeply about design consistency, maintainable code, and frontend architecture that scales.

What You’ll Do

• Build user-facing features with React, Next.js, and TailwindCSS
• Ensure design consistency and accessibility across the platform
• Collaborate with product and design to deliver intuitive, high-performing interfaces
• Apply clean code and architectural patterns to frontend development
• Write maintainable, well-tested code with strong attention to detail
  
  

Our Stack

We Work With a Modern TypeScript-based Stack

• Frontend: React, Next.js, TailwindCSS
• Backend: NestJS, Sequelize, MariaDB / PostgreSQL
• Infrastructure: AWS (ECS, EC2, S3, CloudWatch), Docker, Auth0
• Testing & CI/CD: Jest, Testing Library, GitHub Actions
• Principles: SOLID, Domain-Driven Design, Clean / Hexagonal Architecture
  
  

Who You Are

• You have strong experience building modern React / Next.js applications
• You care about the details — UX, performance, and code clarity
• You collaborate well with designers and care about consistency
• You’re curious, reliable, and motivated by shipping high-quality features
  
  

Why Workfully

We’re a small, product-driven team building technology that changes how recruiting works. You’ll have the autonomy to make decisions, see your impact fast, and work alongside a group of people who care deeply about what they build.

We work hybrid — two days a week from our sea-view office in Barceloneta, the rest wherever you work best.

Fill in the form, we will contact you...

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada26 de des.

React CSS Azure HTML Cloud Coumputing Git AWS

Frontend Engineer (React)
Location: Barcelona, Spain - Hybrid (3 days onsite, 2 days remote)

We are:
Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there´s no limit to what we can achieve.
Are you a fit?

Sounds awesome, right? Now, let´s make sure you´re a good fit for the role:
Key Responsibilities
- Develop, test, and maintain high-quality features and components using React.
- Write clean, scalable, maintainable, and well-tested code.
- Collaborate closely with the Lead Frontend Engineer, backend engineers, designers, and product partners.
- Participate in code reviews and help define frontend best practices.
- Contribute to the full frontend development lifecycle, from technical design through deployment.
- Ensure accessibility, performance, and reliability across the UI.
Must-have Skills

(Remember to include years of experience)
- 5+ years of professional frontend development experience.
- Expert knowledge of modern ReactJS, including React Hooks and React 18 features.
- Strong command of HTML best practices, including semantic markup and accessibility.
- Deep expertise in CSS, including vanilla CSS and scalable CSS methodologies.
- Proficiency with modern tooling: Webpack, Babel, NPM/Yarn.
- Strong experience using Git and GitHub-based workflows.
- Experience with CSS-in-JS libraries (e.g., styled-components, Emotion).
- Experience building and maintaining component libraries or design systems.
- Familiarity with Storybook for component-driven documentation.
- Knowledge of or experience with microfrontend architectures.
Nice-to-have
- AI Tooling Proficiency: Use AI tools to optimize workflows (e.g., code generation, analysis, testing). Ability to propose effective AI use cases for improving development efficiency.
- Experience optimizing frontend performance for large-scale applications.
- Familiarity with accessibility automation tools or testing frameworks (e.g., Jest, RTL, Cypress).
- Understanding of cloud platforms such as AWS, GCP, or Azure.
- Contributions to open-source libraries or UI tooling.
Work Model

This role follows a hybrid model based in Barcelona, Spain, with 3 days per week onsite and 2 days remote.
What we offer
- A High-Impact Environment
- Commitment to Professional Development
- Flexible and Collaborative Culture
- Global Opportunities
- Vibrant Community
- Total Rewards

Specific benefits are determined by the employment type and location.

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada24 de des.

. React Javascript PHP CSS HTML Angular Docker Jira Google Analytics UX/UI Salesforce SEO CMS

Buscamos un/a Front Developer con sólida experiencia técnica para incorporarse a un equipo digital para una empresa líder en el sector fitness, bienestar y salud, con una fuerte presencia digital y en pleno proceso de evolución tecnológica.

La persona seleccionada será responsable del desarrollo y mantenimiento de distintos proyectos web basados en PHP y JavaScript, trabajando con integraciones, customizaciones avanzadas y buenas prácticas de UX/UI. Tendrás un rol clave en la evolución técnica de las plataformas web, colaborando con distintos equipos y gestionando varios proyectos en simultáneo.

¿Cuáles son las funciones y responsabilidades de un/a Front Developer?

• Desarrollo, mantenimiento y evolución de sitios web basados en WordPress y WooCommerce.
• Creación y personalización de plugins y temas propios.
• Implementación e integración de APIs externas para la conexión con servicios y plataformas de terceros.
• Maquetación y desarrollo utilizando constructores visuales como WPBakery, Divi, Elementor o similares.
• Optimización del rendimiento, seguridad y SEO técnico de los sitios WordPress.
• Resolución de incidencias técnicas (troubleshooting), actualizaciones de core, plugins y temas.
• Gestión simultánea de varios proyectos web, asegurando calidad y cumplimiento de plazos.
• Colaboración con equipos de diseño, marketing y producto para garantizar una correcta experiencia de usuario (UX/UI).

¿Qué skills debo tener para ser un/a buen/a Front Developer?

• Conocimientos demostrables de PHP, HTML, CSS y JavaScript.
• Experiencia demostrable en integraciones mediante APIs.
• Más de 3 años de experiencia administrando WordPress y WooCommerce.
• Desarrollo y mantenimiento de plugins y temas de WordPress.
• Experiencia en optimización web orientada a WordPress.
• Experiencia en troubleshooting y actualización de WordPress y sus componentes.
• Capacidad para gestionar múltiples proyectos web en paralelo.
• Conocimientos en UX / UI aplicados a entornos digitales.
• Conocimientos de Docker y flujos CI/CD.
• Experiencia con Angular y/o React.
• Manejo de Google Analytics, Google Search Console y Google Tag Manager.
• Experiencia en otros CMS distintos de WordPress.
• Uso de herramientas de ticketing como Jira, YouTrack, Salesforce Remedy o similares.

¿Por qué debería aplicar a la oferta de Front Developer?

• Posición híbrida con un entorno de trabajo flexible y colaborativo.
• Oportunidad de formar parte de equipo técnico especializado en proyectos web con foco en calidad y escalabilidad.
• Salario competitivo a partir de 35K
• Posibilidades reales de crecimiento profesional, participando en proyectos en constante evolución tecnológica.

¿Te apasiona crear experiencias digitales sólidas y escalables?

• Únete a un proyecto líder en fitness, bienestar y salud donde tu talento técnico marcará la diferencia. Aplica ahora y evoluciona con nosotros.

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada15 de des.

Teletreball Javascript API Angular Cloud Coumputing AWS DevOps Terraform

About the Company:
Join a leading international insurance multinational with its main headquarters in Barcelona, Spain. You will be part of a highly experienced, fully remote, and international team responsible for building and scaling next-generation cloud solutions. This position offers the flexibility of remote work from anywhere in Spain, while collaborating daily with global teams.

The Role:
We are looking for a highly skilled Senior Engineer with 7+ years of professional experience and a strong specialisation in building modern, complex user interfaces. You will drive the development of responsive web applications, design the necessary APIs, and manage the associated AWS infrastructure.

Key Responsibilities:
Lead Modern Frontend Development: Drive the design, implementation, and maintenance of responsive, high-performance web applications using Angular or similar modern JavaScript frameworks.
API Design & Integration: Design, develop, and maintain secure and scalable RESTful APIs specifically to support complex frontend requirements.
AWS Cloud Engineering: Design and manage core AWS infrastructure, focusing on ensuring the secure and highly available deployment of web applications and APIs.
Data Processing: Implement ETL (Extract, Transform, Load) processes to curate data and ensure high data quality for internal monitoring and analytics tools.
Infrastructure as Code (IaC): Implement and maintain infrastructure provisioning and configuration using IaS tools, leveraging Terraform where possible.
DevOps & CI/CD: Establish and manage automated CI/CD pipelines relevant to both frontend and backend deployments.
Collaboration & Mentorship: Work closely with Product Owners, Architects, and international engineering teams, contributing to architectural decisions and mentoring junior colleagues.
Essential Skills & Qualifications (Must-Haves):
Skill Area
Requirement
Years of Experience
Total Experience Professional experience in software engineering/development. 7+ years
Frontend Development Angular or comparable modern JavaScript framework (hands-on proficiency). 5+ years
API Experience Proven ability to design, develop, and maintain secure, scalable APIs. 3+ years
Cloud Engineering Strong hands-on experience in AWS (CI/CD, deployment, and infrastructure management). 3+ years
Language Proficiency Perfect / Native-level English (mandatory for daily collaboration with international teams).
Highly Desirable Skills (Nice to Have):
Hands-on experience with Terraform for Infrastructure as Code.
Experience in Data Engineering, including ETL processes and data curation techniques.
Demonstrated ability to lead technical initiatives and improve development processes.

What We Offer:
100% Remote Position within Spain.
Opportunity to work within a leading global insurance firm.
Integration into a highly skilled and diverse international team.
Continuous professional growth in Cloud, DevOps, and Full-Stack development.