• Build and own core product features - Design and implement full-stack features from the ground up: database schema, backend logic, GraphQL API, and React/TypeScript UI • Take full ownership of significant parts of the system: reliability, performance, and long-term maintainability are yours to drive • Participate in every stage of the development lifecycle, from design and implementation to rollout and smooth operation in production • Contribute to and challenge our technical architecture as we scale • Bring genuine backend depth - Design robust data models and schemas built to perform at scale • Build and operate backend services, including background jobs, async pipelines, and integrations with third-party systems • Own observability: instrument systems, define meaningful metrics, and respond to incidents with confidence • Identify and address security risks proactively from API design to infrastructure exposure • Automate deployments via our CI/CD systems and continuously improve development processes • Work with AI as a day-to-day accelerator - Leverage AI tools actively in your workflow, from code generation and review to debugging and documentation, to move faster without compromising quality • Contribute to how we integrate AI-assisted development practices across the engineering team • Stay curious about emerging AI capabilities and bring new ideas on how we can use them to ship better, faster • Be a team force multiplier - Lead technical design on significant features and share your experience openly • Review pull requests with rigor and care, raising the bar for the whole team • Participate actively in team rituals: stand-ups, planning, retros • Contribute to our culture of quality: incremental, well-tested, observable changes • Pursue quality, always - Champion clean code, solid test coverage, and strong engineering practices • Improve processes and methodologies to reach the highest standards • Bring excellence to your own work and help others do the same.

• Develop, implement, and deploy scalable, efficient, and reusable front-end and back-end solutions. • Build performant front-end applications that consume and present large volumes of data. • Write clean, maintainable, and well-documented code. • Refactor existing services for a sustainable future. • Collaborate with fellow engineers, product managers, and stakeholders to ensure we're building the right features, in the right way, to advance the platform. • Improve application performance through caching, optimization, and efficient data delivery strategies.

• Develop, implement, and deploy scalable, efficient, and reusable front-end and back-end solutions. • Build performant front-end applications that consume and present large volumes of data. • Write clean, maintainable, and well-documented code. • Refactor existing services for a sustainable future. • Collaborate with fellow engineers, product managers, and stakeholders to ensure we're building the right features, in the right way, to advance the platform. • Improve application performance through caching, optimization, and efficient data delivery strategies.

Role Description We are looking for a skilled and proactive Full Stack Developer to join our engineering team. In this role, you will be responsible for building, scaling, and maintaining robust web applications. You will work closely with cross-functional teams to deliver high-quality, user-centric features using React on the frontend and Nest.js (or Node.js) on the backend. - A core part of your responsibilities will include designing, developing, and integrating secure and scalable APIs. - Collaborating in a dynamic environment where Spanish is the primary language for team communication. Qualifications - Minimum of 2 years of professional experience in Full Stack web development. - Strong, hands-on experience with React (including hooks, state management, and modern ecosystem tools). - Deep understanding of Nest.js. If you don't have Nest.js experience, a solid, proven background in Node.js is required. - Fluent or Native Spanish is mandatory, as day-to-day team communication, documentation, and meetings will be conducted in Spanish. Requirements - Knowledge of cloud services (AWS, Azure, or GCP). - Familiarity with containerization (Docker). - Knowledge of Typescript. Benefits - Contract Type: Freelance / Independent Contractor. - Project Duration: 2 months (Temporary / Short-term assignment). - Work Location: 100% Remote. - Working Hours: Ability to work full-time within the Spain time zone (CET/CEST).