Lead AI Engineer | Python | LLMs | Agentic AI | Hybrid (Barcelona)

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Velocity Tech has partnered with an innovative, venture‑backed AI startup that is transforming a highly regulated industry through the application of cutting‑edge artificial intelligence.

We’re looking for a Lead AI Engineer to take ownership of the company’s AI strategy while remaining hands‑on in the design, development, and deployment of production‑grade AI systems. This is an opportunity to join a small, high‑calibre engineering team where you’ll have a direct influence on both the technical direction and future of the product.

What You’ll Be Doing

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- Lead the design and development of production‑ready AI systems built around LLMs and agentic workflows.

- Build intelligent multi‑step agent frameworks capable of solving complex business problems.

- Design robust evaluation, testing and feedback loops to continually improve AI performance.

- Develop reliable, scalable AI applications with a focus on observability, latency, cost optimisation and system resilience.

- Work closely with founders and senior leadership to define the company’s AI strategy and technical roadmap.

- Transform complex real‑world processes into reliable, auditable AI‑driven solutions.

- Research,



evaluate and implement the latest advancements across AI and machine learning technologies.

What We’re Looking For

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- Strong commercial experience building backend applications in Python .

- Hands‑on experience building agentic AI systems , multi‑agent workflows or orchestration frameworks.

- Experience working with modern AI frameworks such as LangGraph or similar.

- Good understanding of model evaluation, observability and AI system reliability.

- Solid machine learning and NLP fundamentals.

- Experience influencing technical direction and making architectural decisions around AI products.

- Startup or scale‑up experience is highly desirable.

- Python

- FastAPI

- LangGraph

- Vector Databases

- Docker

Why Join?

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- Join a well‑funded AI startup building genuinely impactful products.

- Shape the AI strategy from an early stage and have a direct influence on product direction.

- Work with modern AI technologies in a highly innovative environment.

- Small engineering team offering significant ownership and autonomy.

- Collaborate directly with founders, product leaders and experienced engineers. xqbhyrx

- Hybrid working (Barcelona) with an opportunity to make a real impact from day one.

Please note: Candidates must already have the right to work in the EU, as visa sponsorship is not available for this position.

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📌 Lead Ai Engineer (pyhton) (Barcelona)
🏢 Velocity Tech
📍 Barcelona