Fullstack Developer – AI / GenAI Scope (B2B)

ResponsibilitiesDesign, develop, and maintain backend and frontend application components supporting Data and AI use cases.Maintain and evolve logical application code and APIs used by data and AI services.Ensure application performance, reliability, security and scalability in production environments.Participate in backlog refinement and implement development tasks aligned with product priorities.Contribute to testing, debugging, and code reviews to ensure high-quality and maintainable code.Maintain technical documentation for developed components and interfaces.Collaborate closely with technical and product teams to align development activities with business needs.QualificationsBachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).3+ years of professional experience with Python.Be proficient with testing framework (pytest) and be able to ensure standard code quality thanks to quality tools integration (ruff / pyrefly).Have some basic knowledge of infrastructure to communicate with devops (nice to have).Practical experience with AI or machine learning projects.Excellent communication in English and Polish will round off your profile.Availability to work in a hybrid mode with at least 1 visit in the office per month.About Data ReplyAs part of the Reply group, Data Reply offers a wide range of services that support customers in becoming data driven. We operate in various industries and business areas and work intensively with our customers so that they can achieve meaningful results through the effective use of data. Data Reply offers many years of experience in transformation projects to achieve “data-driven companies”. We focus on the development of data platforms, machine learning solutions and streaming applications - automated, efficient, and scalable - without making any compromises in IT security.