Headquarters:USA/Europe URL:https://neptune.ai/ We seek an experiencedStaff Python Software Engineerto join our fully remote team. In this role, you will be part of the squad responsible for developing and maintaining our Python client libraries-APIs for logging and querying model-building metadata. As a key contributor, you will shape their architecture, optimize performance, and ensure seamless integration with machine learning workflows. This role requires a deep understanding of Python, user-friendly API design, and performance optimization to deliver a robust and scalable experience for our users. Our tech stack (the bigger the overlap, the better): Languages:Python. Cloud platforms:Microsoft Azure, Google Cloud Platform (GCP). Others:Protobufs, gRPC, Swagger. Responsibilities: Develop and Maintain the Python Client Library:Contribute to the design, development, and maintenance of our Python API for logging and querying model-building metadata. Code Quality& Reviews:Ensure high-quality, maintainable, well-documented code through active development and rigorous code reviews. Technical Leadership:Drive 1-2 key initiatives, working closely with 3-5 engineers to ensure smooth execution, clear task breakdowns, and effective communication of progress and challenges. Architecture& Performance Optimization:Design scalable and efficient solutions for API interactions, ensuring high performance and reliability in large-scale ML workflows. Innovation& Best Practices:Identify and propose enhancements to the Python client library and its surrounding ecosystem to improve user experience and performance. You might be a fit if you have: Minimum of 6 years of professional software development experience. Strong proficiency in algorithmic thinking and problem-solving. Passion for performance optimization, both on architecture& component level. Concise and logical communication, both written and verbal. Ability to balance business goals with technical purity, especially when adapting to high-paced, shifting priorities. Experience in user-friendly API design. Experience in leading 3-5 people engineering teams. We offer: Flexibility:100% remote work with offices (co-works) in Warsaw/Wrocław/Poznań/Kraków available and flexible working hours; Share in our success:Participate in theEmployee Stock Option Planand be part of our growth journey; Time off:20 paid service-free days per year; Ownership and impact:Space to take action, bring your ideas to life, and make a real impact. To apply:https://weworkremotely.com/remote-jobs/neptune-ai-staff-python-software-engineer