We are seeking a Senior AI Engineer to join a fast-paced and innovative team focused on developing and optimizing generative AI solutions, leveraging cutting-edge technologies like LLMs and prompt engineering. In this role, you will work closely with cross-functional experts to design solutions for document understanding and data extraction, driving impactful results in a cloud-native environment.
**This role offers a hybrid model, with 3 days per week working from the client's office in Krakow, Poland.
Responsibilities**
- Design and optimize advanced prompts tailored for document understanding and data extraction use cases
- Collaborate with stakeholders to deeply understand document structures, semantics, and key-value relationships
- Create PoCs (Proofs of Concept) using Python to validate prompt effectiveness and iterate quickly
- Maintain a prompt library, ensuring quality, reusability, and compliance with security and privacy guidelines
- Perform prompt validation, stress testing, and failover scenario modeling for different LLMs
- Analyze LLM output quality, fine-tune prompts accordingly, and propose model-specific prompt strategies
- Work with ML engineers on potential fine-tuning initiatives to improve model accuracy on specific document domains
- Document best practices, prompt strategies, and experiment results in a structured and maintainable format
- Identify and mitigate risks related to prompt injection, hallucination, or other LLM-specific vulnerabilities
Requirements
- 3+ years of experience in AI Engineering, with proven expertise in designing and deploying prompts in real-world applications (including 2+ LLM production projects)
- Excellent understanding of prompt structures and contexts
- Proficiency in Python, including experience with LLM APIs, prompt engineering frameworks, and data manipulation tools like Pandas
- Experience with at least one fine-tuning or retrieval-augmented generation (RAG) pipeline implementation
- Familiarity with prompt evaluation tools, metrics like BLEU and ROUGE, and human-in-the-loop validation
- Understanding of LLM-related security concerns such as prompt injection, output filtering, API limitations, and structured output
- Excellent communication skills and ability to translate complex document requirements into actionable prompt logic
- Strong analytical mindset with attention to both high-level design and low-level output consistency
- English level of minimum B2 (Upper-Intermediate) for effective communication
Nice to have
- Experience with vector databases and retrieval-augmented generation
- Exposure to tools like LangChain, LlamaIndex, or similar
- Prior work with OCR, NLP, or intelligent document processing (IDP) pipelines
We offer
- We gather like-minded people:
- Engineering community of industry professionals
- Friendly team and enjoyable working environment
- Flexible schedule and opportunity to work remotely within Poland
- Chance to work abroad for up to 60 days annually
- Business-driven relocation opportunities
- We provide growth opportunities:
- Outstanding career roadmap
- Leadership development, career advising, soft skills, and well-being programs
- Certification (GCP, Azure, AWS)
- Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru
- English classes
- We cover it all:
- Stable income (Employment Contract or B2B)
- Participation in the Employee Stock Purchase Plan
- Benefits package (health insurance, multisport, shopping vouchers)
- Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more
- Referral bonuses
- Corporate, social and well-being events
- Please, note:
- The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview.
- We will reach out to selected candidates exclusively.
EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.