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Full Stack AI Developer Miejsce pracy: Warszawa Technologies we use Expected Python SQL React.js TypeScript Django FastAPI OpenAI API Microsoft Azure LLMs RAG Optional Microsoft SQL Server About the project Join the Data & Invoicing team in developing and driving the creation of reusable AI components to enhance business processes using cutting-edge solutions. Lead the responsible integration of advanced models into our production systems. Your responsibilities Write clean, maintainable code in Python for cloud-native environments. Architect, develop, and support backend components using Django/FastAPI and frontend modules with React and TypeScript. Package advanced AI features (retrieval-augmented generation, prompt engineering, agents) into efficient, reusable modules. Build robust model evaluation pipelines, including benchmarking for quality, latency, and safety. Promote Responsible AI practices, including comprehensive logging, tracing, and risk management. Seamlessly integrate LLMs, embeddings, and RAG techniques into essential business workflows. Analyze and optimize company processes using AI and traditional technologies, always focusing on measurable business value. Leverage OpenAI APIs and implement highly structured prompt engineering solutions. Test, deploy, and monitor systems and applications with Microsoft Azure. Ensure high system performance and proactively resolve issues. Serve as an expert on the system and provide technical support to internal teams. Collaborate within a Kanban-based squad, prioritizing quality assurance and strong CI/CD practices. Foster best engineering practices through knowledge sharing and continuous improvement. Our requirements Minimum 3 years of professional experience with Python, modern cloud architectures, and related tools. At least 2 years of experience working with SQL Server. Demonstrated proficiency in frontend development with React and TypeScript. Experience with Django and FastAPI frameworks. Hands-on experience integrating LLMs, RAG, embeddings, and modern retrieval techniques. Proficiency with OpenAI APIs and prompt engineering for reliable structured outputs. Strong grasp of core software engineering principles, clean architecture, and API design. Expertise in deploying and managing containerized applications on Microsoft Azure. Deep understanding of clean code, SOLID principles, and scalable development patterns. Proven track record in optimizing processes using both AI and traditional solutions. Professional fluency in English. Optional Familiarity with AI tools, libraries, and third-party integrations. Excellent communication skills and collaborative approach. Experience working in Agile or Kanban teams, committed to best practices in software development. This is how we organize our work This is how we work in house you focus on product development scrum kanban This is how we work on a project Clean Code code quality measures design patterns Continuous Deployment Continuous Integration integration tests testing environments unit tests Development opportunities we offer development budget external training mentoring space for experimenting substantive support from technological leaders support of IT events technical knowledge exchange within the company What we offer A truly global perspective – develop your international mindset by collaborating daily with colleagues from diverse cultures and backgrounds across the world. Real impact – contribute to shaping the future of one of the most user-centric companies in the travel-tech industry. Your ideas and solutions will reach thousands of users globally. Extra days off – celebrate your birthday with a paid day off, and another to give back through volunteering. Language courses – grow your communication skills and connect effortlessly in our multicultural environment. Lunch vouchers – enjoy your breaks with tasty meals on us. Benefits sharing the costs of sports activities private medical care integration events Goelett In Goelett, we are a vibrant mix of travel industry experts, product managers, and software engineers, developing a successful online booking tool for corporations and large organizations. As part of the sector-leading S4BT Group, we empower 500k business users who make thousands of bookings daily.