OverviewAs a Senior ML Platform/Ops Engineer at Preply, you will productionize ML systems to ensure reliability, performance, and observability.

You'll bridge ML, data engineering, and cloud infrastructure to enable fast, secure, and reproducible model development from training to deployment.

You'll collaborate with ML Scientists, Backend and Data Engineers to shape the ML lifecycle foundations.

The role offers exposure to end-to-end ML workflows, including LLM-based features, in a fast-paced, mission-driven environment.

You'll impact learning at scale for learners and tutors across 175 countries.

Compensaciones / Beneficioslesson allowance stipend

Learning & Development budget

health insurance

mental health support platforms

time off for self-development

equity

ResponsabilidadesBuild and maintain ML pipelines for training, evaluation, and deployment using Databricks, MLFlow, Airflow, DBT, Sagemaker, Tecton

Support AI scientists by creating reproducible, containerized model training environments and manage compute at scale (e.g., spot/GPU autoscaling)

Define and implement observability and alerting for ML systems (model drift, data quality, feature coverage)





Design and scale data ingestion and feature transformation flows using batch (Spark/BigQuery) and streaming (Kafka)

Contribute to internal Python libraries and platform tooling to accelerate experimentation and deployment

Ensure ML services are modular, testable, and monitored from day one

Exploration and productionization of LLM-based features (retrieval pipelines, prompt evaluation, model serving)

Requisitos principales5+ years designing and deploying ML systems in production

Proficiency in Python and

SQL

, and orchestration tools (Airflow, Kubeflow, Dagster)

Experience with GCP or AWS, Kubernetes, and CI/CD workflows

Understanding of ML model lifecycles: training, validation, deployment, monitoring

Strong DevOps practices: Git, IaC (Terraform), logging/observability, Docker/K8s

Ability to work independently with ML Scientists and mentor peers in reliability, testing, and delivery

Exposure to LLM serving, vector databases, or GenAI-powered product flows

independent work style

mentorship

collaboration

Python

SQL

Airflow

📌 Senior Machine Learning Engineering (Barcelona)
🏢 Preply
📍 Barcelona