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Fullstack Developer - Web & Mobile (React/Next.js/Expo) - valladolid
We are a tech company focused on digital entertainment services, with a strong commitment to innovation, artificial intelligence and the creation of new digital products. We’re looking for a React Fullstack Developer to join our Product Tech team, driving the evolution of our content portals and digital applications across more than 20 countries.
Your Role
- Build and evolve digital products for web and mobile using Next.js and Expo .
- Contribute to the continuous improvement of international content portals and apps.
- Develop new digital products for multiple markets and platforms.
- Work with a web‑first approach, creating solid web solutions that can evolve into mobile apps when needed.
- Design and implement reusable, scalable and maintainable components with a strong focus on performance, accessibility and UX.
- Work fullstack, connecting frontend, mobile apps, APIs, backend services and external systems.
- Participate in technical architecture decisions, standards definition and best practices.
- Coordinate and support small external development teams to ensure alignment, quality and on‑time delivery.
- Review code, validate technical solutions and help unblock issues during development.
- Connect to Linux servers when needed to review logs, diagnose incidents or validate deployments.
- Ensure best practices in security, authentication, token/session management and API communication.
- Deliver stable builds to QA, reducing defects and improving the release process.
- Use advanced AI development tools (code assistants, agents, documentation generators, testing automation, error analysis, etc.).
- Participate in agile ceremonies, communicating progress, blockers and risks clearly.
What We’re Looking For
- 5+ years of professional experience building web and mobile products with React, TypeScript, Next.js and Expo.
- Advanced knowledge of modern frontend development (components, hooks, state management, performance, architecture).
- Experience building web products with Next.js (routing, API consumption, modern rendering, i18n, deployments).
- Experience building and maintaining mobile apps with Expo.
- Knowledge of Expo SDK (expo-router, expo-updates, expo-notifications, expo-auth-session, etc.).
- Experience with Expo EAS (builds, submits, OTA updates, environment management).
- Fullstack mindset with ability to work with APIs, backend services and databases.
- Practical backend experience with Node.js, plus PHP or equivalent technologies.
- Ability to connect to Linux servers, review logs and diagnose service issues.
- Experience with Git workflows, pull requests and collaborative development.
- Knowledge of App Store and Google Play deployments.
- Familiarity with testing, QA, debugging, monitoring and performance analysis.
- Experience using AI tools for development (Antigravity, Cursor, Cline, Claude Code, agents, MCPs, etc.).
- Ability to coordinate small technical teams, especially external or international resources.
- Strong technical judgment, autonomy and results‑oriented mindset.
- Excellent communication skills with both technical and non‑technical stakeholders.
- High level of English for daily communication with international teams.
Nice to Have
- Experience in environments combining web, mobile and backend development.
- Background in international digital products, content portals, entertainment services, subscription or multi‑country distribution.
- Experience leading technical deliveries end‑to‑end.
- Ability to translate business needs into pragmatic technical solutions.
- Continuous improvement mindset, automation and smart use of AI tools.
- Experience working with external providers or distributed teams.
- Knowledge of CI/CD, automated deployments, observability, analytics, tracking or digital monetization.
What We Offer
- Permanent contract with competitive salary.
- Flexible start time (8:00-9:30h).
- Hybrid work model (2 days remote per week after 6 months).
- Active participation in web and mobile projects with real impact.
- Continuous training, including AI‑powered development tools.
- Flexible compensation: childcare, transport, health insurance.
- Social benefits: meal vouchers and Wellhub gym discounts.
- A dynamic, creative and fast‑evolving team with room to grow, propose and take ownership.
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