Middle Python AI/ML Engineer (AI)

Middle Python AI/ML Engineer

Format: 100% Remote (Project-based / Independent Contractor)

Locations: Serbia, Romania, Moldova, Georgia, Armenia, EU (outside RU/BY tax jurisdictions)

Engagement: Full-time contract (B2B)

Experience: 4+ years of commercial Python experience

We are an international IT consulting company looking for a solid Middle+ Python AI/ML Engineer for our ongoing client projects.

You will work on production backend services powering AI solutions: integrating LLMs, building RAG pipelines, deploying models, and handling data processing.

Key Responsibilities:

• Develop and maintain backend APIs for AI/ML services using FastAPI and Django.
• Implement and tune inference pipelines for LLMs (RAG, CAG, DSPy) and classical ML models.
• Integrate vector databases (Pinecone) and optimize semantic search/embeddings.
• Build data processing and ETL tasks (Pandas, PySpark).
• Containerize services (Docker) and deploy to AWS, setting up metrics and dashboards (Prometheus, Grafana).

Core Requirements:

• 4+ years of commercial development experience with Python.
• Backend: Solid hands-on experience with FastAPI and/or Django, Celery, Redis, and relational databases (PostgreSQL/MySQL).
• AI/LLM: Practical experience with LangChain, Hugging Face, vector stores (Pinecone), and LLM APIs/models (Mistral, etc.).
• ML Foundations: Scikit-learn, XGBoost/CatBoost, PyTorch / PyTorch Lightning, Pandas. Understanding of Transformer architectures.
• Infrastructure: Docker, core AWS services, Prometheus & Grafana.

Nice to Have:

• Experience with DSPy, Haystack, or multi-agent concepts.
• Experience with PySpark or computer vision (OpenCV).
• English B2+ (spoken & written).

Conditions:

• 100% remote work with flexible hours.
• Direct B2B / Contractor agreement (USD / EUR / USDT).
• Opportunity to roll into subsequent projects within the company pool.