Senior Fullstack Engineer - Madrid/Barcelona(remote) – International client

Twtspain • tres cantos, comunidad de madrid, Spain • Posted June 04, 2026

Location tres cantos, comunidad de madrid

Job Type Full-time

Category Informática y tecnología

Posted June 04, 2026

Senior Fullstack Engineer in Madrid/Barcelona (remote) for an International client  
Job role:  Senior Fullstack Software Engineer 
Job description:  A Senior Fullstack Software Engineer with high experience in DevOps, Kubernetes & Python. 
Location:  Madrid/Barcelona (Remote) 
Languages required:  English (C1) MANDATORY  
Minimum experience:  5 to 7 years 
Rate:  260-285€/day 
Responsibilities We are seeking a Senior Fullstack Software Engineer with strong expertise in Python and solid experience in JavaScript (preferably ReactJS). The ideal candidate will take a lead role in backend architecture and development with a strong emphasis on performance, reliability, and scalability, supporting thousands of concurrent users and high-frequency external integrations. 
The role includes contributing to frontend development with modern technologies, making ke...
            

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