Sr Software Developer

Experteer Overview As a Senior Software Engineer at Lumen, you design and build scalable AI-enabled software in a cloud-native environment.You will develop AI Agents, APIs, microservices, and RAG pipelines, collaborating with cross-functional teams to deliver reliable, secure systems.You drive engineering excellence through clean code, testing, and CI/CD while staying ahead of cloud and AI trends.You will work in a hybrid Madrid setting, contributing to a high-impact, AI-ready connectivity platform.Compensaciones / Beneficios* Design and build high-performance, scalable Python software in the cloud* Develop AI Agents, APIs, microservices, and RAG pipelines* Collaborate with partners, architects, and other engineering teams to define requirements* Promote clean code, TDD, and CI/CD practices* Stay current with cloud, Python, DevOps, and AI trends and advocate adoption* Troubleshoot complex issues to ensure production stabilityResponsabilidades* 7+ years of professional software development experience* At least 3 years in a senior engineer role at a large technology company* Deep expertise in Python with FastAPI for production-grade apps* Experience with cloud platforms (AWS, Azure, or GCP)* Containerization (Docker, Kubernetes)* Relational and NoSQL databases* Messaging queues* Strong understanding of design patterns and secure coding principlesRequisitos principales*

• 7+ years of professional software development experience
• At least 3 years in a senior engineer role at a large technology company
• Deep expertise in Python with FastAPI for production-grade apps
• Experience with cloud platforms (AWS, Azure, or GCP)
• Containerization (Docker, Kubernetes)
• Relational and NoSQL databases
• Messaging queues
• Strong understanding of design patterns and secure coding principles