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LLM Engineer (f/m/x) Miejsce pracy: Wrocław Technologies we use Expected Python LLM Natural Language Processing About the project We are looking for a passionate specialist who wants to build real-world Generative AI solutions that matter. Together with our global client - a world leader in molecular biology and biotechnology, best known for its breakthrough tools used in genetic research, diagnostics, and life-science laboratories worldwide – we are creating next-generation LLM-based systems that support scientists and business teams alike. If you want to turn cutting-edge AI into production-ready solutions that have a tangible impact on healthcare and science, this is the place for you. Apply and build the future with Sii. Your responsibilities Design, train, fine-tune, and evaluate large language models using domain-specific and proprietary datasets Develop and optimize prompts to ensure high-quality, reliable, and context-aware model outputs Deploy and integrate LLMs into production environments, including RAG pipelines, agent-based solutions, APIs, and chat applications Experiment with state-of-the-art LLM architectures and assess their suitability for business and scientific use cases Work closely with product, data, and engineering teams to translate real needs into effective AI-driven solutions Our requirements At least 3 years of hands-on experience working with LLMs, NLP, or foundation models in a commercial environment Strong understanding of transformer-based architectures and modern NLP techniques Proficiency in Python and experience with popular LLM and NLP frameworks and libraries Experience with fine-tuning, serving, and monitoring large language models in production Good command of English at B2/C1 level Fluent Polish required Residing in Poland required What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People Recruitment stages Send your CV Talk to us about your expectations Learn more about our projects and choose the best Start your adventure with Sii! Sii Sp. z o.o. Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment. Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.