About WebellianWebellian is a well-established Digital transformation and IT consulting company committed to creating a positive impact for our clients. We are driven by shared values, strong principles, and a passion for innovative and disruptive technologies. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy.About the positionWe are seeking a Python Full Stack Developer with strong experience building scalable and well-structured Python applications related to projects with Machine learning models and AI agents. You will design, implement, and optimize backend services while also contributing to frontend development, creating intuitive and responsive user interfaces. The role involves writing clean, testable code across the stack and collaborating on architecture and design decisions. Great opportunity to get experience in development of AI solutions.Key responsibilities Build scalable, efficient, and maintainable backend systems and APIs using Python frameworks Implement clean, efficient, and well-documented code across both backend and frontend components. Collaborate with product and design teams to build intuitive, responsive user interfaces. Develop and optimize APIs, data models, and application logic. Write and maintain automated tests to ensure code quality and reliability. Work collaboratively with DevOps to define infrastructure and deployment requirements. Competencies MS degree in Computer Science, Engineering, or a related subject. Deep understanding of object-oriented design and programming Familiarity with common Python frameworks (e.g., FastAPI, Streamlit, Pytest etc.)  Deep understanding of software architecture and development principles Experience with Pydantic for data validation and modeling is a plus. Experience with Docker, GitHub, and deploying applications to  Kubernetes Services. Strong technical design, development, analysis and problem solving skills. Ability to learn/use a wide variety of open source technologies and tools. Excellent organizational and time management skills, and the ability to work on multiple projects at the same time. Team-player Great attention to detail. Fluency in English is a must. What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card English classes are available Hybrid work (3 days/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site 🤫)