Applied AI Engineer — Build Real-World AI Features

Bjak; España; Presencial; EUR 70.000 - 120.000; Jornada completa

Descripción de la vacante

ActAI is seeking an Applied AI Engineer to transform model capabilities into real‑world product behavior. You will own problems end‑to‑end, from shaping model behavior to building the supporting systems to ensure reliable production performance.

This role sits at the intersection of machine learning, systems, and product, aiming to make AI work for users beyond demos and prototypes, across latency, cost, and reliability constraints.

Formación

• Strong foundation in ML and modern neural network architectures.
• Hands‑on experience with training, fine‑tuning, or deploying ML models.
• Ability to write clean, production‑quality code.
• Comfort working across model → infra → product.

Responsabilidades

• Build and ship AI features end-to-end (model → system → user experience).
• Design and iterate on prompts, tools, memory, and agent workflows.
• Turn raw model outputs into structured, reliable behaviors.
• Debug issues across the full stack (model, orchestration, infra, UX).
• Optimize for latency, cost, and production reliability.
• Develop lightweight evaluation frameworks to measure real-world performance.
• Collaborate with product and engineering to translate ambiguous problems into working systems.

Conocimientos

ML fundamentals

Model training

Production code

Systems thinking

Problem solving

Shipping mindset

Herramientas

Python

PyTorch/JAX

LLMs APIs

Inference/serving

Vector DB

Descripción del empleo

ActAI is seeking an Applied AI Engineer to transform model capabilities into real‑world product behavior. You will own problems end‑to‑end, from shaping model behavior to building the supporting systems to ensure reliable production performance.

This role sits at the intersection of machine learning, systems, and product, aiming to make AI work for users beyond demos and prototypes, across latency, cost, and reliability constraints.