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Full Stack Developer Senior Spain Jobs

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Full Stack Developer Senior
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Join our Product Team as a Senior Full Stack Developer in Valencia or Madrid. Architect scalable microservices with Node.js, Next.js, and Kafka, while building modern frontends with React/Vue. Leverage AWS, DDD, and CI/CD best practices in a role offering performance bonuses, medical insurance, a...
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Spain , Valencia; Madrid
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35000.00 - 51750.00 EUR / Year
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Shakers
Expiration Date
Until further notice
Freelance Senior Full Stack Developer
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Join our Barcelona team as a Freelance Senior Full Stack Developer. Build a modern web platform using React, Next.js, and Node.js in an agile, cross-functional environment. This 3-month contract offers a competitive daily rate for an expert in scalable, full-stack JavaScript/TypeScript development.
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Spain , Barcelona
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Not provided
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Blu Selection
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Until further notice
Senior Full Stack Developer jobs represent the pinnacle of web application engineering, blending deep technical expertise with strategic leadership. Professionals in these roles are end-to-end architects of the digital experience, responsible for designing, building, and maintaining the complete software ecosystem—from the user-facing front end to the server-side back end and the database that powers it all. Unlike junior positions, senior roles carry the expectation of autonomy, complex problem-solving, and guiding technical direction. Typically, a Senior Full Stack Developer’s responsibilities encompass the entire software development lifecycle. They translate business requirements into technical specifications, architect scalable and secure systems, and write clean, efficient code for both client-side and server-side components. A key duty is creating robust APIs (Application Programming Interfaces) that allow different parts of an application to communicate. They are also heavily involved in ensuring code quality through unit and integration testing, performance optimization, and debugging. Beyond hands-on coding, senior developers mentor junior team members, lead code reviews, make pivotal technology stack recommendations, and collaborate closely with product managers, designers, and other stakeholders to drive project success. They often play a crucial role in DevOps practices, contributing to continuous integration and deployment (CI/CD) pipelines. The skill set for these jobs is broad and deep. On the front end, proficiency in modern JavaScript frameworks like React, Angular, or Vue.js is standard, coupled with core web technologies (HTML5, CSS3). On the back end, expertise in one or more server-side languages is required, such as C# with .NET/.NET Core, Java with Spring Boot, or Node.js, Python, or similar. They must have strong experience working with relational databases (e.g., SQL Server, Oracle, PostgreSQL) and often NoSQL databases (e.g., MongoDB). A firm grasp of RESTful API design, cloud platforms (AWS, Azure, GCP), containerization (Docker, Kubernetes), and version control (Git) is essential. Crucially, senior roles demand strong soft skills: analytical thinking, clear communication, project leadership, and the ability to mentor others. Most positions require a bachelor’s degree in computer science or a related field, coupled with 5+ years of hands-on development experience, including significant time in a full stack capacity. For seasoned technologists seeking to leverage their comprehensive skill set to build impactful digital products and lead technical initiatives, Senior Full Stack Developer jobs offer a challenging and rewarding career path at the heart of modern software innovation.

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