Senior AI Developer — LLM, RAG & Data Solutions

Solid Company; Kraków; Hybrid; PLN 70,000 - 90,000; Full time

Benefits offered by this job

Private healthcare

Multisport card

Referral program

Free parking

Job summary

HeadHR is seeking a Senior AI Developer to join a prestigious team building AI solutions for a leading international bank. In this role, you will design and develop applications powered by Large Language Models while maintaining data products and curated datasets.

You'll be responsible for overseeing AI initiatives end-to-end and implementing AI quality frameworks. The position offers a hybrid work environment with 6 days per month expected from the Cracow office, and includes excellent benefits like private healthcare and a multisport card.

Responsibilities

• Deliver AI and data product initiatives end-to-end, from solution design through build, testing, release and post-launch support.
• Design, build and maintain data products and curated datasets that support AI, LLM and RAG use cases.
• Develop and support LLM-powered applications, including RAG pipelines, embeddings, retrieval mechanisms, grounding/citations and tool integrations.
• Create and maintain prompts, conversation flows, reusable templates, system instructions and structured outputs for testing.
• Define and execute AI quality and evaluation frameworks covering accuracy, safety, latency and cost.
• Implement data handling practices and governance controls to ensure compliance with requirements.
• Build and maintain reliable data pipelines for AI-ready datasets.

Skills

Experience delivering AI and data products end-to-end in enterprise environments

Proficiency in Python and/or TypeScript

Hands-on experience building LLM-based solutions

Prompt engineering and conversational AI design skills

Experience defining AI evaluation frameworks

Solid data engineering foundations

Practical experience with cloud-based AI and data platforms

Job description

HeadHR is seeking a Senior AI Developer to join a prestigious team building AI solutions for a leading international bank. In this role, you will design and develop applications powered by Large Language Models while maintaining data products and curated datasets.

You'll be responsible for overseeing AI initiatives end-to-end and implementing AI quality frameworks. The position offers a hybrid work environment with 6 days per month expected from the Cracow office, and includes excellent benefits like private healthcare and a multisport card.