Senior AI Engineer (LLMs / RAG / Real-Time Systems)

Senior AI Engineer 💰 Salary: 28 000 – 31 000 PLN net/month (B2B) + 26 days paid annual leave + equity (ESOP)📍 Location: Remote (Poland) + meetup in Poznań once per monthAbout the ProjectOur client is an early-stage startup building a real-time AI platform that supports professionals during live conversations. The system processes conversations in real time and provides contextual insights, knowledge retrieval, and guidance during live interactions. The team combines experience in AI systems, distributed infrastructure, and SaaS, and is now scaling engineering to bring the product to early users.RoleThe client is looking for a Senior AI Engineer / AI Scientist who can combine research-level thinking with production execution. You will work on the core intelligence layer, reasoning over live conversations, prompt orchestration, knowledge retrieval, and experimentation frameworks. This role is ideal for someone who enjoys turning complex ideas into reliable, real-world AI systems.ResponsibilitiesBuild and improve LLM-powered systemsDesign prompt orchestration and reasoning pipelinesDevelop retrieval and grounding approaches (RAG)Create experimentation frameworks for evaluating AI behaviourAnalyse outputs using quantitative and qualitative metricsTranslate research ideas into production-ready systemsCollaborate on AI architecture and system designRequirementsMSc or PhD in Computer Science, Mathematics, Physics, or similarStrong understanding of AI/ML concepts and system designAbility to write production code in Python, TypeScript, or similarExperience with LLMs / prompt engineeringStrong analytical and problem-solving skillsExperience designing experiments and evaluation frameworksFluent EnglishComfortable working in a remote environmentNice to HaveExperience with RAG systems or conversational AIFamiliarity with LangChain or similar frameworksKnowledge of real-time / streaming systemsUnderstanding of latency, reliability, and system trade-offsExperience with AI systems in productionWhat the Client OffersOpportunity to build core AI systems from an early stageReal impact on how AI behaves in productionWork with experienced founders and engineersRemote-first environmentCompetitive compensation + equityHigh level of ownership and autonomyCulture focused on quality, rigor, and real-world impactIdeal ProfileThinks scientifically but builds pragmaticallyCares about correctness, explainability, and reliabilityEnjoys experimentation as much as implementationComfortable working at the intersection of research and product