Senior AI Engineer – finance industry (f/m/x)

We are looking for an experienced Senior AI Engineer to join a newly formed AI team delivering a strategic initiative in the banking sector. This is a unique opportunity to co-create a modern AI-native platform from scratch and influence the direction of AI within the organisation. In this role, you will design and develop solutions based on LLMs, RAG systems, and agent-based architectures to support data integration and transformation processes. You will contribute to key decisions around AI strategy, model selection, architecture, and quality standards. We are seeking a candidate with strong technical skills and hands-on experience in building production-grade AI solutions—someone who understands where AI brings real business value and can deliver high-quality, transparent, and secure solutions in a financial environment. Your tasks - Design and develop solutions based on LLMs, RAG, and agent-based architectures - Co-create and execute an AI strategy for a modern banking platform - Select models, frameworks, and approaches for production-grade AI solutions - Build systems for data integration, transformation, and validation automation - Define prompt engineering, model evaluation, and AI quality standards - Develop monitoring, evaluation, and continuous improvement mechanisms - Collaborate with engineering and product teams on new features - Ensure high quality, transparency, and auditability of AI outputs - Contribute to key architectural decisions and AI direction - Mentor and share knowledge within the AI team Requirements - At least 3 years in AI/ML and a minimum of 5 years in product development - Strong Python skills - Hands-on experience with LLMs, RAG, and agent-based systems in production - Familiarity with frameworks such as Agno, LangChain, LlamaIndex, or similar - Knowledge of prompt engineering and AI model evaluation - Experience with Azure or AWS - Understanding of vector databases and embeddings - Experience with workflow orchestration tools (e.g., Temporal, Prefect, Airflow) - Ability to design scalable, reliable AI solutions - Experience in model monitoring and MLOps practices - Capability to make architectural decisions and assess the business value of AI - Strong collaboration skills with technical and business stakeholders - Fluent English Nice to have - Previous work in financial services, fintech, or other regulated industries - Knowledge of compliance, auditability, and AI security - Familiarity with MLOps and large-scale ML/LLM deployments - Experience fine-tuning open-source models for specific domains - Proven track record in developing AI solutions for data platforms, analytics, or SaaS products - Background in AI R&D projects - Publications, conference speaking, or open-source contributions - Experience building and scaling technical teams Job no. JOB-FDYMJ 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