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Full Stack Developer Senior

Spain, Valencia 35000.00 - 51750.00 EUR / Year · Job Posted December 12, 2025
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Job Description

We're on the lookout for a Full Stack Dev Senior to take our Product Team to the next level. This role offers the opportunity to build a marketplace using the latest technologies, with the chance to shape the next generation way of working.

Job Responsibility

  • Architect, build and maintain scalable, reliable backend services in Node.js (e.g. NestJS) and server-side applications with Next.js
  • Design and implement microservices architectures and event-driven pipelines (Kafka or similar)
  • Partner with UI/UX designers to build responsive, high-quality pixel-perfect frontends using React, Vue, or Angular, and integrate with our RESTful and GraphQL APIs
  • Optimize load times, bundle sizes, and user interactions
  • Champion our “Shakers Agile” methodology—own your GitLab workflow, write tests, enforce CI/CD best practices, and automate where it makes sense (AWS EC2/S3/CloudFront/Lambda)
  • Apply Hexagonal Architecture, Domain-Driven Design (DDD), Clean Code, and SOLID principles
  • Implement authentication/authorization (JWT, OAuth), enforce data protection, and integrate code-quality/security tools (SonarQube)

Requirements

  • 4+ years of professional development experience
  • Bachelor’s degree in Computer Science, Telecommunications Engineering, Mathematics or a closely related STEM field
  • Real experience building full stack applications with Node.js, Next.js, Vue/Angular, or similar
  • Proven experience designing RESTful APIs, microservices, and event-driven systems (Kafka)
  • Hands-on with Hexagonal Architecture, DDD, SOLID, and Clean Code practices
  • Familiarity with AWS services (EC2, S3, CloudFront, Lambda)
  • Strong understanding of web security best practices (authentication, authorization, data encryption)
  • Experience with quality and security tooling (JWT, OAuth, SonarQube, Kiuwan)
  • Highly proactive
  • Excellent communicator and team player
  • Results-oriented, self-managed, and adaptable to shifting priorities
  • A genuine love for coding and continuous learning
  • Comfort in a fast-paced, high-traction startup culture
  • A mindset of ownership

Nice to have

Bonus if you’ve shipped features at another product-focused company

What we offer

  • Wellness programs
  • Gym access
  • English classes
  • Medical insurance
  • Organic fruit
  • Free caffeine and theine
  • Quarterly bonus based on performance & potential and Shakers global results

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