Python Engineer

Tel.: +351 214 171 161 - Lisboa

Tel.: +351 253 120 734 - Braga

Fax: +351 214 177 610

(Chamada para a rede fixa nacional) (Call to the national fixed network)

About Us:DataSmart is a Portuguese company, positioning itself as a consulting company of excellence, with over 20 years of existence. We are specialized in Technologies and Information Systems services, for the Portuguese and International markets. We pride ourselves on fostering a culture of involvement, experience, and excellence.

Join our team as a Python Engineer (Hybrid – Lisbon)!

What You’ll Do:

• Design, build, and maintain production-grade AI and LLM-powered services using Python and modern software engineering practices.
• Develop and expose APIs and services using FastAPI, REST/gRPC, WebSockets, and streaming-based architectures.
• Implement and operate LLM orchestration frameworks such as LangChain and/or LlamaIndex, integrating OpenAI or Azure OpenAI models.
• Design and optimize RAG (Retrieval-Augmented Generation) pipelines, including semantic and hybrid chunking, re-ranking strategies, vector databases, metadata management, and index versioning.
• Build agent-based systems, including toolkits, hallucination control mechanisms, evidence validation, and budget-aware execution loops.
• Implement evaluation, observability, and monitoring strategies for AI systems, including tracing, feedback loops, utility metrics, RAG evaluation (e.g. RAGAS), synthetic test sets, and light red-teaming.
• Develop scalable pipelines and workflows using tools such as Airflow or Prefect, supporting asynchronous and event-driven architectures.
• Containerize and deploy services using Docker and Kubernetes, ensuring scalability, auto-scaling, and CI/CD best practices.
• Operate model-serving solutions (e.g. FastAPI with vLLM or Triton, when applicable), managing streaming, caching of prompts an