AI Architect – GenAI & Cloud (f/m/x)

About the Position

We are seeking a Senior AI Architect specializing in GenAI & Cloud to join our team in Poland, focusing on designing scalable AI solutions.

Responsibilities

• Lead client-facing engagements - discovery sessions, technical workshops, architecture presentations - and translate business problems into well-defined AI solution specifications.
• Analyze RFP/RFI documents, assess feasibility, and build technical proposals including architecture diagrams, delivery timelines, team composition, and cost breakdowns.
• Scope and estimate AI projects end-to-end - from data readiness and infrastructure needs through cloud costs and ongoing operational expenses.
• Design end-to-end architectures for generative and classical AI systems: knowledge-grounded AI, agentic workflows, multi-model orchestration, and hybrid search solutions.
• Make and defend technology choices - foundation models, vector databases, orchestration frameworks, inference infrastructure - matching each to the problem, not the hype.
• Define MLOps/LLMOps practices and data pipelines: CI/CD for models and prompts, evaluation pipelines, chunking strategies, embedding generation, and drift monitoring.
• Lead technical design reviews, produce architecture decision records, and mentor engineers on AI engineering best practices.

Requirements

• At least 10 years in software/data/ML engineering, with at least 3 years focused on AI/ML architecture at scale.
• Deep, production-level fluency in at least one major cloud AI ecosystem: Azure, AWS, or GCP.
• Experience in client-facing roles - comfortable leading technical workshops and presenting to both C-level and engineering audiences.
• Ability to scope and budget AI projects, including cloud cost modeling, team sizing, and delivery planning.
• Strong hands-on skills in Python and practical experience with AI/ML frameworks such as LangChain, LangGraph, Semantic Kernel, or equivalent.
• Practical experience building knowledge-grounded AI systems and agent architectures in production - not just prototypes.
• Solid understanding of transformer architectures and how they affect system design decisions (context windows, latency, cost).
• Fluent English, both written and spoken.
• Fluent Polish required.
• Residing in Poland required.

Nice to Have

• Experience fine-tuning LLMs (LoRA, QLoRA, RLHF/DPO) and understanding when fine-tuning is worth the investment vs. in-context learning.
• Background in consulting, system integration, or services delivery with exposure to enterprise procurement processes.
• Contributions to open-source AI/ML projects or published technical writing.
• Experience with graph databases for knowledge graph-augmented search and reasoning.
• Background in classical ML - because not every problem needs an LLM.

We Offer

• AI Grant - Stop talking about AI and start building it. Our AI Grant gives you dedicated budget and resources to turn your wildest AI idea into a working project, backed by two paid weeks to focus on nothing else.
• AI Center of Excellence - Work alongside specialists in agentic AI, sovereign AI, generative and discriminative AI. This isn’t a siloed team - it’s the people you’ll learn from and build with daily.
• Your tools, your choice - Full access to AI-powered development tools including Claude, Cursor, and GitHub Copilot. Pick what works best for you.
• Real project variety - From generative AI for legal document compliance, through agentic systems in manufacturing environments, to enterprise-scale AI platforms, computer vision, and autonomous driving. You won’t get bored.
• Conference and speaking support - Want to attend conferences? We’ll back you. Want to speak at them? Even better - we’ll support you with dedicated preparation time and bonuses.

Location

• Bialystok, PL
• Bydgoszcz, PL
• Cracow, PL

About the Company

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.