One of the companies we collaborate with at Joppy, a TOP AI Startup, is looking for a
Lead AI Engineer
to operate as the
right hand of the Chief of AI
, driving the technical direction of their AI stack, accelerating new use cases, and leading the development of next-generation GenAI capabilities.
Work modality:
HYBRID in Madrid (Spain) or Lisbon (Portugal) (3 days office/week)
What you'll do
Design, train, and deploy advanced LLMs and production-grade ML models.
Build scalable data pipelines (batch/streaming) and end-to-end fine-tuning workflows.
Implement automated evaluation frameworks (A/B testing, LLM-as-judge, validation dashboards).
Develop and optimize
RAG pipelines
, vector search, and agentic architectures.
Improve latency, reliability, scalability, and inference cost across the platform.
Mentor engineers and collaborate with product, delivery, and leadership.
Define AI standards, best practices, and technical strategy across the organization.
What we're looking for
5+ years in ML Engineering, Data Engineering, Applied AI, or similar roles.
Proven experience deploying
LLMs to production
at scale.
Strong Python + PyTorch/TensorFlow/JAX skills.
Experience with Airflow, Spark, Dagster, or similar pipeline tools.
Cloud experience (AWS/GCP/Azure) + Docker + Kubernetes.
Hands-on experience with LangGraph, LlamaIndex, or agent orchestration frameworks.
Strong understanding of ML theory, inference optimization, and MLOps.
Excellent communication and technical leadership ability.
Nice to have
Production experience with RAG systems and vector databases.
Experience in regulated environments (banking, insurance).
Prior technical leadership or architecture ownership.
What we offer
Competitive salary:
€110K–€130K
performance bonuses
Equity participation
Private health insurance + wellness allowances
Flexible setup (Hybrid Lisbon/Madrid)
25 days PTO + local public holidays
About Joppy
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