Fullstack Engineer - React & Node/Python (PWA Specialty)

 

We are looking for a Fullstack Developer with at least 3 years of experience in mobile application development using Progressive Web Apps (PWA) to participate in the end-to-end delivery of a React-based mobile project. Please note this is a 4-month temporary contract.

The selected candidate will work on a solution with a strong focus on performance, user experience, offline functionality, and efficient data synchronization.

 

Responsibilities

• Analyze, design, and develop the project end-to-end.
• Develop a mobile-first PWA using React and TypeScript.
• Design and develop APIs connected to PostgreSQL.
• Implement processes for efficient image management and storage.
• Implement client-server synchronization processes and offline functionality.
• Analyze and optimize application performance and architecture.
• Define mobile-oriented UI/UX solutions.
• Integrate authentication using OAuth 2.0 with Microsoft.
• Handle the deployment of the solution.

 

• 3+ years of experience in mobile-first PWA development with React and TypeScript .
• Experience developing APIs with Python/FastAPI and/or Node.js .
• Experience working with PostgreSQL .
• Experience with offline-first applications or limited connectivity environments.
• Experience with caching strategies and offline functionality in PWAs.
• Hands-on experience with Service Workers and IndexedDB .
• Experience in image management and optimization for web/mobile applications.
• Experience in client-server synchronization and offline data management.
• Experience with OAuth 2.0 and/or Microsoft Entra ID (Azure AD).
• Experience with deployments on AWS and/or Azure .
• Experience in web/mobile performance optimization.
• Strong understanding of mobile-oriented UI/UX.
• Ability to work autonomously and contribute to architectural decisions.

•  
• Nice to Have / Optional

• Experience with offline-first architectures and data synchronization conflict resolution.
• Experience with Microsoft Graph API, particularly integration with Microsoft Teams and email services for sending notifications.
• B2B or freelancer contract.
• Remote position working in the Spain time zone.
• Be part of a multicultural team working on international projects.
• Temporary / Contract (4 months)

If you are passionate about data, development & tech, we want to meet you!

• Talan Spain’s commitment to non-discrimination based on gender, race, ideology, or any other reason, in accordance with the company’s "Equality Plan" and the current regulations on gender equality between women and men (Royal Decree-Law 6/2019).