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Senior Full Stack Software Developer

Spain, Valencia · Job Posted February 13, 2026
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Job Description

At HUBBLR you get to own the end-to-end delivery of innovative software products, and can hands on shape longterm scalable projects with a diverse, collaborative team. We are looking for a persona with a background experience heavily in backend orientated roles but eventually grew into managing frontends as well and still likes hands on engineering work and loves the product work grind. Any engineer at HUBBLR should be able to take perspective on what a product manager does, meaning also owning the product, iterating on feedback of the users and bringing in ideas on how to shape products. Furthermore we're looking for someone who is willing to take ownership and drive success in our client projects, participates in architectural & technical decision making and is able to build a digital product from early stages to scaling it up.

Job Responsibility

  • Supporting us in new and long-term projects as a (senior) software engineer
  • Joining a growing team of 9, located in Münster, Hamburg, Mannheim and Valencia
  • Working mainly on client-projects and sharing your experience with team members
  • Taking end to end ownership in a delivery cycle with highly autonomous decision making
  • Actively participating in architectural and technological decisions for software projects
  • Taking over own responsibilities in projects, estimate developing tasks on your own and giving other coworkers advice on their work
  • Reviewing code from other coworkers and actively be part of continuous improvement
  • When working on client-projects you will be partly responsible of communicating with their CTO / Stakeholder, joining conference calls/meetings on status update, time estimation and project management

Requirements

  • Experience in modern backend technologies - i.e. Golang, Node.js. (esp. nestjs)
  • Experience in modern web technologies - Vue.js, React.js, Flutter or similar framework
  • Familiarity with agile software developing methods
  • Familiarity in responsible coding with LLM based assistants - i.e. Claude Code, Gemini Code, etc.
  • Experience in common API techniques - HTTP, GraphQL, GRPC - at least 1 of them
  • Communication skills for constructive team feedback and client calls
  • Analytical thinking & MVP mindset
  • Fluent in English
  • Minimum 4 years of experience
  • Ability to work independently on tasks
  • Work permit for Spain and living in Valencia or Valencia Region

Nice to have

  • Experience in E2E tests
  • Experience in TypeScript
  • Experience in TailwindCSS
  • Experience in CI/CD processes
  • Experience in eCommerce
  • Experience in other backend technologies - PHP (esp. Laravel), Python

What we offer

  • Own workstation in Valencia Office (Marítim)
  • Ability to travel to offices in Germany and Spain
  • Sandboxed work environments to maintain security standards and try out new tools

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