Titan OS

Linux-based smart TV OS with ads

Lead Data Scientist

Applied Machine LearningConfirmed live in the last 24 hours

Full-timeBarcelona, SpainNo salary listed

About the Job

Requirements

At least 6 years of experience in data science or machine learning, including at least 2 years leading projects or people and hiring.
A track record of building data products that reached production and had clear business impact.
Experience in advertising or ad technology, such as audiences, targeting, measurement, or programmatic.
Strong skills in Python and SQL (DBT/SqlMesh), and good knowledge of machine-learning libraries such as scikit-learn, PyTorch, and XGBoost.
Solid knowledge of statistics, including experiment design, causal inference, and forecasting.
Experience working with large datasets and modern data platforms.
A good understanding of data privacy and its effects on modeling, including consent and GDPR.
Professional-level English.

Responsibilities

Take ideas from the first question through production by defining the problem, building the model, measuring impact, and improving it.
Design data products that other teams and partners can use, such as audience segments, scores, APIs, or dashboards.
Work with data engineering to ensure models run reliably at scale, with effective monitoring and clear ownership.
Decide when a simple solution is sufficient and when a more complex model is worthwhile.
Build audience and segmentation models based on viewing behavior, content, and device data.
Develop targeting, lookalike, and contextual models for connected TV campaigns.
Improve advertising performance and revenue through inventory forecasting, pricing and yield optimization, and frequency and reach.
Design measurement and attribution methods so advertisers can understand the value of their campaigns.
Work with identity and enrichment data at household and device level to improve reach and match rates.
Develop content recommendations and personalization for the home screen and FAST channels.
Analyze user engagement and retention.
Support business decisions with clear analysis, experiments, and A/B tests.
Set the data science vision and roadmap with product and engineering.
Build the data science team from scratch by hiring, mentoring, and growing data scientists.
Define good practices for code quality, reproducibility, experiment design, and model evaluation.
Explain complex results clearly to technical and non-technical audiences, including clients and partners.

Desired Qualifications

Experience in connected TV, streaming, media, or TV measurement.
Knowledge of identity graphs, household matching, or data clean rooms.
Experience with recommender systems.
Experience with MLOps tools, such as feature stores, model registries, and orchestration.
Knowledge of IAB standards, including TCF and OpenRTB.

Lead Data Scientist - Titan OS (Hybrid)

Titan OS · Barcelona, Spain (Hybrid) · Full-time · Posted 2026-10-29

Workplace: hybrid

Department: Data

Description

Is this you?

Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company, is looking for you!

Our platform combines content discovery and advertising technology in one solution, helping leading TV brands unlock greater value. Titan OS powers devices from major brands including Philips, AOC and JVC, reaching millions of viewers across Europe and LATAM. Titan OS is also powering free premium FAST Channels on selected SONY Android TVs.

Over the last two years, Titan OS has grown revenue 10x and attracted leading investors, including Highland Europe and Mangrove.

At TitanOS, we live by three core values:

Make things happen - We take ownership, move fast, and deliver impact
No ego - We collaborate with respect and humility to reach shared goals
Show genuine passion - We love what we do and never stop learning

Culture and environment are at the heart of our ethos. If the above resonates with you, keep reading because we believe you could be a perfect addition to our incredible team!

The Role

We are looking for a Lead Data Scientist to turn our data into products. You will build models and data products that create real value for the business, with a strong focus on advertising: audiences, targeting, measurement and yield.

Advertising will be your main area, but not the only one. You will also help other teams with content recommendations, user engagement and business analytics.

This is a hands-on lead role. You will write code and ship models yourself, and you will also set the direction for data science at Titan OS, mentor other people and work closely with product, engineering and commercial teams.

What you will do:

Build data products

Take ideas from the first question to a product in production: define the problem, build the model, measure the impact and improve it.
Design data products that other teams and partners can use, for example audience segments, scores, APIs or dashboards.
Work with data engineering to make sure models run reliably at scale, with good monitoring and clear ownership.
Decide when a simple solution is good enough and when a more complex model is worth it.
Build audience and segmentation models based on viewing behaviour, content and device data.
Develop targeting, lookalike and contextual models for CTV campaigns.
Improve ad performance and revenue: forecasting of inventory, pricing and yield optimization, frequency and reach.
Design measurement and attribution methods so advertisers can understand the value of their campaigns.
Work with identity and enrichment data (household and device level) to improve reach and match rates.

Other areas

Content recommendations and personalization for the home screen and FAST channels.
User engagement and retention analysis.
Support business decisions with clear analysis, experiments and A/B tests.

Leadership

Set the data science vision and roadmap together with product and engineering.
Build the data science team from scratch: hire, mentor and grow new data scientists.
Define good practices: code quality, reproducibility, experiment design and model evaluation.
Explain complex results in a simple way to technical and non-technical people, including clients and partners.

Requirements

What you bring

6+ years of experience in data science or machine learning, with at least 2 years leading projects or people, including hiring.
A track record of building data products that went to production and had a clear business impact.
Experience in advertising or ad tech: audiences, targeting, measurement, programmatic or similar.
Strong skills in Python and SQL (DBT/SqlMesh), and good knowledge of the usual ML libraries (for example scikit-learn, PyTorch, XGBoost).
Solid statistics: experiment design, causal inference, forecasting.
Experience working with large datasets and modern data platforms .
Good understanding of data privacy and how it affects modeling (consent, GDPR).
Professional level of English.

Nice to have

Experience in CTV, streaming, media or TV measurement.
Knowledge of identity graphs, household matching or data clean rooms.
Experience with recommender systems.
Experience with MLOps tools (feature stores, model registries, orchestration).
Knowledge of the IAB standards (TCF, OpenRTB).

Benefits

Reasons to apply:

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.

If you're excited about this position, don’t hesitate to apply. We’re waiting for you to join us! And if you want to know more about us, follow us on LinkedIn!

Apply

Apply at Titan OS

About the Company

Titan OS

Linux-based smart TV OS with ads

Titan OS creates an independent Linux-based operating system for smart TVs, partnering with manufacturers under a revenue-sharing model. It brings together streaming apps, FAST channels, and traditional broadcasts into a content-first home screen with universal search and cloud-based apps to minimize local storage. Titan Advertising uses first-party data and retail media partnerships to serve targeted ads on the home screen and in content, supporting ongoing revenue for all ecosystem players. The goal is to be a European alternative to incumbents, aiming to capture about 40% of the market and build a unified ecosystem with TV brands, content owners, and advertisers.

Company size: 51-200
Company stage: Late Stage VC
Total funding: $107.6M
Headquarters: Barcelona, Spain
Founded: 2023

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