LLM Researcher

About the Role

We are looking for an experienced LLM Researcher to help us build intelligent, automated systems that enhance customer-facing applications. In this role, you are expected to utilize, optimize and finetune existing language models or train new ones, more adapted to our use cases - and turn successful prototypes into reliable, maintainable, and observable production services. Your work will directly contribute to the development of dynamic, real-time commentary content for games such as FIFA, NBA, or interactive avatars.

This is a remote role with an option to join our Prague office, offering the opportunity to work with cutting-edge LLM frameworks, retrieval-augmented generation (RAG), and multimodal models that process both language and vision. You will collaborate with a small, fast-moving team of ML engineers, product developers, and domain experts to design systems that combine reasoning, tool use, and creative content generation.

Responsibilities

Must-have

• Solid experience with LLMs in production environments, including training , fine-tuning , inference , and tool integration .

• Experience building RAG-based systems and working with vector or graph databases.

• Experience deploying, monitoring and integrating these systems into the overall solution.

• Strong understanding of function calling , structured output generation , and agentic reasoning workflows .

• Proficiency in Python and key libraries (e.g., PyTorch, Hugging Face Transformers, FastAPI).

Nice-to-have

• Experience with sports broadcasting or data-driven content generation (e.g., live commentary, analytics).

• Familiarity with multimodal LLMs and integrating textual and visual inputs.

• Familiarity with tools like vLLM, Triton, or DeepSpeed for efficient model serving.

• Contributions to open-source AI tools or research publications in NLP, multimodal AI, or agent systems.

By applying to this position, you consent to Valka.AI s.r.o., ID No.: 231 32 221, Pod dráhou 1637/6, Holešovice, 170 00 Praha 7, Czech Republic together with it's subsidiaries processing your personal data under Regulation (EU) 2016/679.

Your data will be processed for recruitment and may be retained for up to 3 years for similar job opportunities.

Rights: Access, correct, delete, restrict, or object to processing; withdraw consent via [link for members] or complain to [link for members]