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# Senior Python Backend Engineer (Madrid)

- **Company:** Clearml
- **Location:** Madrid, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Profiling, Code Review, Data Architecture, Data Structures, Software Debugging, Distributed Systems, Elasticsearch, Python (Programming Language), Enterprise Messaging Systems, MongoDB, Open Source Technology, Performance Tuning, Query Optimization, Secure Coding, AI Infrastructure, Multithreading, Data Storage Management, Cloud Platform System, Indexer, Backend, Solid Principles, Kubernetes, Restful APIs, Docker
- **Published:** October 28, 2026
- **Apply:** https://www.buscojobs.com.es/senior-python-backend-engineer-madrid-en-madrid-ID-377913189

## About the Role

8+ years of professional experience developing in Python.

 - Proven experience with multi-threaded or asynchronous applications.
 - Strong knowledge of high-volume data architecture using MongoDB and Elasticsearch,

including indexing, query optimization, and memory/performance tuning.

 - Solid understanding of software design principles, data structures, and algorithmic

efficiency.

 - Proven experience developing REST APIs, messaging systems, and distributed

architectures.

 - Strong debugging and profiling skills.
 - Experience collaborating effectively in distributed or remote teams.
 - Excellent communication skills and ability to work independently or as part of a team.
 - Experience with Docker, Kubernetes.
 - Familiarity with AWS, GCP, or other cloud environments.

## Description

About the companyAt ClearML, our mission is to make infrastructure management effortless across every phase ofthe AI lifecycle - from building and training AI models to large-scale production. Trusted bymore than 2,000 organizations, AI builders and IT teams use our AI infrastructure platform topower everything from early-stage R&D; to mission-critical public sector and enterprise-grade AIpipelines.We're growing quickly and looking for curious, self-driven individuals who are excited to shapethe future of AI and the infrastructure that powers it. Our customers are tackling some of theworld's most important challenges - revolutionizing healthcare, discovering new medicines,securing global finance, protecting national security, and preserving our planet's ecosystems.About the RoleWe are seeking a Senior Python Backend Engineer with a very strong background indesigning and building high-performance, scalable systems. The adecuado candidate is anexperienced problem-solver who understands how to design, implement, and optimize complexand secure production systems. Candidates should be comfortable working from home,collaborating with a dynamic and vibrant team from all around the world. The products andtechnologies you'll build and maintain will be used by thousands of companies around the worldas well as numerous independent developers, data scientists and engineers.ClearML is a fully-remote, open-source company which promotes independence and personalgrowth and accountability - we look for people who thrive in environments where the technologyyou develop quickly affects the work and productivity of people around the world. If you likegetting quick feedback from real-world users, rapidly shipping features and technologies toproduction and seeing the difference you make, ClearML is the place for you!Responsibilities- Design, develop, and maintain robust Python systems capable of handlinghigh-throughput ingestion and concurrent user sessions.- Build and optimize multi-threaded and asynchronous processes for performance andreliability.- Manage and optimize data storage and retrieval using MongoDB and Elasticsearch, witha strong focus on performance, scalability, and memory efficiency.- Collaborate with cross-functional teams to architect solutions that meet business andtechnical objectives.- Troubleshoot production issues and improve system stability and monitoring.- Contribute to code reviews, technical documentation, and best practices for development.- Maintain a high-level of secure development and security awareness.Requirements- 8+ years of professional experience developing in Python.- Proven experience with multi-threaded or asynchronous applications.- Strong knowledge of high-volume data architecture using MongoDB and Elasticsearch,including indexing, query optimization, and memory/performance tuning.- Solid understanding of software design principles, data structures, and algorithmicefficiency.- Proven experience developing REST APIs, messaging systems, and distributedarchitectures.- Strong debugging and profiling skills.- Experience collaborating effectively in distributed or remote teams.- Excellent communication skills and ability to work independently or as part of a team.- Experience with Docker, Kubernetes.- Familiarity with AWS, GCP, or other cloud environments.? Senior Python Backend Engineer (Madrid)? ClearML? Madrid