Ciklum is looking for a Python Engineer to join our team full-time in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: We are partnering with Client to significantly upgrade the Retrieval-Augmented Generation (RAG) architecture of their AS Copilot system. Our goal is to drastically reduce AI hallucinations in code generation and optimize retrieval latency without re-architecting their existing platform. Responsibilities: Serve as the core implementation engine for either the hybrid retrieval pipeline or grounding and citation mechanisms Instrument the existing RAG pipeline and actively support the preparation of golden datasets Implement hybrid retrieval features (BM25 + pgvector), adaptive context layers, and multi-turn prompt engineering Ensure all AI components are delivered securely as Python source code directly into the client’s Azure DevOps environment Pipeline Implementation: Build and deploy hybrid retrieval mechanisms, deeply integrating pgvector and BM25 search strategies into the existing infrastructure Grounding & Integration: Implement robust grounding and citation modules, ensuring accurate claim-level attribution and regression testing Testing & Regression: Develop end-to-end integration tests and support CI/CD regression harnesses to maintain strict KPI baselines Collaboration: Work closely with Senior Engineers and Architects, actively participating in daily pair programming, joint backlog refinement, and sprint ceremonies Optimization: Write clean, modular Python code focused on maintaining strict, sub-4.5s low-latency execution (P95 targets) within an enterprise environment Requirements: Background: Solid foundation in Computer Science, Machine Learning, Data Science, or a related technical field, with proven practical ML engineering experience Technical Stack: Highly proficient in Python. Practical, hands-on experience with vector databases (specifically PostgreSQL and pgvector) and hybrid search strategies AI/NLP Experience: Proven experience building and deploying Retrieval-Augmented Generation (RAG) pipelines and working closely with LLM APIs (e.g., OpenAI gpt-4o models) Cloud & DevOps: Familiarity with the Azure ecosystem (Azure OpenAI, Azure Machine Learning), Git version control, and CI/CD deployment pipelines Testing & Quality: Experience writing robust unit and integration tests (e.g., pytest). Familiarity with LLM evaluation frameworks like RAGAS is a strong plus Soft Skills: Proactive, collaborative team player comfortable working directly with client engineers in a fast-paced, embedded agile setup What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy flexibility – full remote working possibilities Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum. #LI-MP1