AI engineer in content recommendation

Titan OS Partnership; Barcelona; On-site; EUR 55,000 - 85,000; Full time

Benefits offered by this job

Private health insurance

International work environment

Career growth in a fast-growing CTV IA

Job summary

Titan Operating System S.L. (Titan OS) in Barcelona seeks an AI & Content-Recommendation Engineer to design, train and deploy models for the Smart TV platform, collaborating with ML and backend teams across the full ML lifecycle.

You will prototype ranking models, build data pipelines, expose APIs, and help run A/B tests, with emphasis on scalable, production-grade solutions used by millions of viewers worldwide. Strong Python and ML framework skills required.

Qualifications

• 2-3 years of AI engineering experience with Gen AI/LLM solutions.
• Bachelor’s or Master’s in Computer Science, Data Science, Machine Learning, or related field.
• Strong grasp of probability, statistics, linear algebra, and algorithms.
• Exposure to LLM-powered agents, familiarity with RAG, tool calling, multi-step planning and orchestration.
• Proficiency in Python; familiarity with ML frameworks (PyTorch, TensorFlow, JAX).
• Experience with SQL (BigQuery, PostgreSQL) and pandas/Spark.
• Understanding REST services and how models surface as endpoints.
• Clear communicator in a fast-paced, collaborative environment.

Responsibilities

• Design, build and deploy LLM-powered agents for recommendations.
• Prototype and train ranking/recommendation models from large-scale logs.
• Design offline metrics and analyze results.
• Assist online A/B tests and turn findings into iterations.
• Expose APIs and integrate with Go/Ruby services.
• Contribute to CI/CD pipelines (GitHub Actions, Docker).
• Participate in code reviews and collaboration with teams.
• Work with product owners to prioritize and scope tasks.
• Follow Agile processes and maintain documentation practices.
• Monitor KPIs and service performance.

Skills

Python

LLM design

ML/DL pipelines

SQL

REST APIs

PyTorch

Team collaboration

Education

Bachelor’s or Master’s in CS/DS/ML

Tools

Go

Ruby

Docker

GitHub Actions

Job description

Описание: Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company, is looking for you! As an AI & Content-Recommendation Engineer, you’ll work with our Machine-Learning and Backend teams to design, train, and deploy the models and data pipelines that decide "what to watch next" on our Smart TV platform. You’ll gain hands‑on experience across the full ML lifecycle - from exploratory data analysis through online A/B testing - while shipping features used by millions of viewers worldwide.

Задачи:

• Design, build and deploy LLM-powered agents that improve recommendation and information-retrieval experiences.
• Prototype and train ranking/recommendation models from large-scale interaction logs.
• Design offline metrics and analyze results.
• Help set up or monitor online A/B tests; turn findings into iteration plans.
• Expose recommendation APIs and integrate them with our existing Go / Ruby services.
• Contribute to CI/CD pipelines for data & model versioning (GitHub Actions, Docker).
• Code Reviews & Collaboration: Participate in peer reviews; give and receive constructive feedback.
• Work closely with product owners and teammates to prioritize and scope tasks.
• Follow Agile Processes: Adhere to sprint ceremonies, ticketing workflows, and documentation practices.
• Monitor & Measure: Assist in establishing basic SLAs and KPIs for service performance; learn to track and report on these metrics.

Требования:

• 2-3 years of experience in AI Engineering, with significant recent experience designing and deploying Gen AI and LLM-based solutions.
• Proven hands‑on experience building end‑to‑end ML/DL pipelines Bachelor’s or Master’s program in Computer Science, Data Science, Machine Learning, or a related field.
• Solid grasp of probability, statistics, linear algebra, and algorithms.
• Exposure to LLM-powered agents, familiarity with RAG pipelines, as well as with tool/function calling, multi‑step planning and orchestration.
• Proficiency in Python; familiarity with at least one ML/RL or deep‑learning framework (PyTorch, TensorFlow, JAX).
• Experience with SQL (BigQuery, PostgreSQL) and pandas / Spark.
• Recommender Systems Exposure API Know‑How: Understanding of REST services and how models are surfaced as endpoints.
• Testing & Documentation: Awareness of unit/integration testing for data pipelines and eagerness to learn experiment‑driven development.
• Soft Skills: Clear communicator who thrives in a fast‑paced collaborative environment.

Будет плюсом:

• Familiarity with real‑time stream processing (Kafka, Flink).
• Exposure to AWS/GCP AI services.
• Interest in LLM-based recommendation, embeddings, or content understanding.
• Basic knowledge of observability stacks (Prometheus, Grafana).
• Comfort with an additional backend language (Go, Node.js, or Ruby) for service integration.

Условия:

• Competitive compensation
• Private health insurance
• Friendly, diverse, and international work environment
• Opportunity to work outside of your comfort zone and develop professionally in an exciting and fast‑growing CTV industry.
• Change the future of TV!
• A unique opportunity to join a well‑funded, high‑growth company in the early stages to help shape a product/business that will impact millions.