About the role
We are looking for an experienced AI/ML Engineer to join a long-term project delivered for a global leader in the banking sector. As part of a highly skilled international team, you will contribute to the development of innovative AI and Machine Learning solutions, transforming the Credit & Lending area for corporate and institutional clients worldwide. This role offers the opportunity to work in a stable yet fast-paced environment, where collaboration, innovation, and continuous learning are strongly valued. You will cooperate closely with business stakeholders and engineers across multiple global locations to deliver impactful, production-grade solutions. If you are passionate about applying modern AI technologies to solve complex real-world challenges, this opportunity may be the right fit for you.
The role requires occasional visits to the client’s office in Kraków, approximately 4 times per month.
Your tasks
- Write and maintain exemplary, high-quality, testable, and reusable code
- Lead the design of AI/ML solutions, ensuring they are scalable, robust, and aligned with the platform's vision
- Own the engineering execution for significant parts of our AI flagship projects, from technical design through to production deployment
- Co-author and champion coding standards and AI best practices to ensure fairness, transparency, and accountability across our models
- Co-drive technical strategy by evaluating and prototyping new technologies, such as advanced RAG techniques, LLM optimization, and agentic architectures
- Collaborate extensively with stakeholders across the AI Programmes, translating business requirements into technical solutions and communicating complex ideas to diverse audiences
- Develop and implement sophisticated solutions using Retrieval-Augmented Generation (RAG) and vector databases to unlock insights from complex financial data
Requirements
- Minimum 5 years of experience in software or ML engineering
- Deep expertise in Python and its ML/AI ecosystem
- Familiarity with relational databases, vector databases, KV stores (Redis), Pub/Sub
- Strong command of microservices architecture, observability, API design, and concurrency models
- Expert-level understanding of LLM architectures and extensive experience fine-tuning models on domain-specific data
- Hands-on mastery of Retrieval-Augmented Generation (RAG), advanced prompt engineering, and designing agentic architectures
- In-depth knowledge of machine learning, deep learning, and NLP
- Proficiency with Azure or GCP, containers, Kubernetes, and CI/CD tools, e.g., Jenkins, Azure DevOps, GCP Cloud Build
- Practical experience in TDD and BDD
- Exceptional presentation and communication skills in English
- Residing in Poland required
Nice to have
- Leadership or architectural experience
- Familiarity with Java for occasional middleware and integration tasks
Job no. JOB-JRRDE
Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.
Benefits For You
- Great Place to Work
- Solid financial situation
- Contracts with the biggest brands
- Centre of internal trainings
- Many experts you can learn from
- Open and accessible management team
- Profit sharing
- Passion Sponsorship program
- Regular integration events and trips
- Comfortable and well-equipped offices
- MySii app
- Medical care
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