Senior Python Backend Engineer
About the company At ClearML, our mission is to make infrastructure management effortless across every phase of the AI lifecycle - from building and training AI models to large-scale production. Trusted by more than 2,000 organizations, AI builders and IT teams use our AI infrastructure platform to power everything from early-stage R\&D to mission-critical public sector and enterprise-grade AI pipelines. We’re growing quickly and looking for curious, self-driven individuals who are excited to shape the future of AI and the infrastructure that powers it. Our customers are tackling some of the world’s most important challenges - revolutionizing healthcare, discovering new medicines, securing global finance, protecting national security, and preserving our planet’s ecosystems. About the Role We are seeking a Senior Python Backend Engineer with a very strong background in designing and building high-performance, scalable systems. The ideal candidate is an experienced problem-solver who understands how to design, implement, and optimize complex and secure production systems. Candidates should be comfortable working from home, collaborating with a dynamic and vibrant team from all around the world. The products and technologies you’ll build and maintain will be used by thousands of companies around the world as well as numerous independent developers, data scientists and engineers. ClearML is a fully-remote, open-source company which promotes independence and personal growth and accountability - we look for people who thrive in environments where the technology you develop quickly affects the work and productivity of people around the world. If you like getting quick feedback from real-world users, rapidly shipping features and technologies to production and seeing the difference you make, ClearML is the place for you! Responsibilities Design, develop, and maintain robust Python systems capable of handling high-throughput ingestion and concurrent user sessions. Build and optimize multi-threaded and asynchronous processes for performance and reliability. Manage and optimize data storage and retrieval using MongoDB and Elasticsearch, with a strong focus on performance, scalability, and memory efficiency. Collaborate with cross-functional teams to architect solutions that meet business and technical 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 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.