Senior Fullstack Developer in Barcelona

Valerdat

Workplace
Onsite
Hours
Full-Time
Internship
No
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Job Description

We are looking for a Senior Fullstack Developer with solid experience in Python and Angular to drive the development of our Django-based SaaS platform. You will work on multitenant architecture serving multiple clients, tackling challenges in scalability, data isolation, and customization.

You will actively participate in the design, construction, and evolution of the application, collaborating with the backend, frontend, AI, and product teams.

🧑‍💻 Work setup: Hybrid – 2 days per week at the office

What are we looking for?

Someone with a product mindset, used to working in dynamic environments, who can bring technical expertise and best practices to both backend and frontend. Someone capable of making architectural decisions, writing clean and scalable code, and collaborating with multidisciplinary teams.

Responsibilities

  • Develop new features across both frontend (Angular) and backend (Django/Python).

  • Participate in the technical design of robust and maintainable multitenant architecture.

  • Integrate internal and external APIs and services.

  • Collaborate with product, design, and data teams to improve the platform.

  • Write automated tests and contribute to the continuous deployment process.

  • Maintain high standards of code quality and best practices (linting, testing, peer reviews, etc.).

Tech stack

  • Backend: Python, Django (multitenant, Django REST Framework)

  • Frontend: Angular (v14+), TypeScript, RxJS

  • Databases: PostgreSQL

  • Infrastructure: Docker, GitHub Actions, Nginx

  • Other: Git, REST, WebSockets, multitenant architecture, OAuth/JWT, CI/CD tools, MFA

Requirements

  • 4–5+ years of experience as a Fullstack Developer, with real production projects.

  • Strong experience with Python and frameworks like Django.

  • Advanced experience with Angular.

  • Understanding of multitenant architectures and data isolation concepts.

  • Familiarity with relational databases (preferably PostgreSQL).

  • Experience with best practices: testing, version control, code reviews.

  • Ability to work collaboratively and contribute to technical decisions.

  • Intermediate to advanced level of technical English.

Nice to have

  • Previous experience with SaaS platforms.

  • Knowledge of web security, scalability, and performance optimization.

  • Experience integrating third-party APIs.

  • Basic DevOps knowledge or experience deploying to the cloud.

  • Experience with Django multitenant libraries (e.g., django-tenants, django-multitenant-schemas).

What we offer

  • Stable project with real technical challenges and growth opportunities.

  • Flat, collaborative team culture opens to new ideas.

  • Autonomy to propose technical and product improvements.

  • Flexible work environment.

  • Access to modern technologies and established CI/CD processes.

  • Direct impact on the development of a platform used by multiple clients.

 

About Valerdat

En Valerdat aplicamos la Inteligencia Artificial para ayudar a los Departamentos de Compras y Supply Chain en la optimización y automatización de procesos.

De esta forma ayudamos a las empresas a reducir costes y tiempo en la gestión de las Compras.

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