AI Engineer – GenAI & Cloud (f/m/x)

Wymagania:
- At least 4 years in software or ML engineering, with hands-on experience shipping AI/ML systems to production
- Strong Python skills — not just scripting, but writing maintainable, tested code for production services
- Practical experience with AI/ML frameworks such as LangChain, LangGraph, Semantic Kernel, or equivalent
- Working knowledge of at least one major cloud platform (Azure, AWS, or GCP) and its AI/ML services
- Experience with vector databases, embedding models, and retrieval systems in real-world applications
- Familiarity with MLOps fundamentals: model versioning, experiment tracking, CI/CD for ML, and monitoring
- Ability to work autonomously while collaborating effectively with architects, data engineers, and product teams
- Fluent English (both written and spoken)
- Fluent Polish required
- Residing in Poland required

Mile widziane:
- Experience fine-tuning LLMs (LoRA, QLoRA) or working with model training pipelines
- Background in classical ML — scikit-learn, XGBoost, time series forecasting, or recommendation systems
- Experience with containerized deployments (Docker, Kubernetes) and infrastructure-as-code
- Contributions to open-source AI/ML projects or published technical writing

O firmie:
- Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
- Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

Zakres obowiązków:
- Build and deploy knowledge-grounded AI systems end-to-end: data ingestion, chunking, embedding pipelines, retrieval logic, re-ranking, and response generation
- Develop agentic applications — tool integrations, planning loops, memory management, guardrails — using frameworks like LangGraph, LangChain, Semantic Kernel, or equivalent
- Implement and maintain ML pipelines for classical use cases: prediction, classification, recommendation, and optimization models
- Deploy and optimize model serving infrastructure: API endpoints, batching, caching, GPU utilization, and cost management across cloud environments
- Write clean, tested, production-grade Python — not prototype code that someone else has to rewrite
- Build evaluation and monitoring pipelines: automated quality checks, drift detection, latency tracking, and human-in-the-loop feedback loops
- Work with cloud-native AI services on at least one major platform (Azure, AWS, or GCP) to implement scalable solutions
- Collaborate with AI Architects on technical design and with data engineers on data availability and quality

Oferujemy:
- Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
- Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
- We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
- Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
- Comfortable workplace – class A offices or remote work
- Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
- PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
- Investment in your growth – meetups, webinars, training platform and technology blog – you choose
- Fantastic atmosphere created by all Sii Power People