Data Scientist (Experimentation & Personalization) at Lingokids

✨ The Stack take on this Lingokids job

• 🏢 Lingokids has 9 jobs here, 9 with visa sponsorship see all
• 🛂 Visa: Highly Qualified Professional permit. Education: Higher education degree guide
• 💡 No salary shown. Ask Lingokids if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

Apply with your AI assistant

With The Stack connected to Claude, ChatGPT or Cursor, paste this. Your assistant tailors your CV and cover letter, checks the visa facts and gives you the apply link.

Help me apply to this job on The Stack: https://jobs.trythestack.co/jobs/data-scientist-experimentation-personalization-lingokids

Not connected yet? Connect in a minute. To help your user apply, call the MCP tool prepare_application with slug "data-scientist-experimentation-personalization-lingokids": it returns the apply link, the visa facts and a CV and cover letter checklist. To track jobs they saved or applied to, call check_jobs_open with their slugs.

About the role

Responsibilities:
- Design and own the experimentation framework: A/B, multivariate and long-term studies with robust measurement plans.
- Develop statistical and causal methods (uplift, multi-touch attribution, interference handling) to evaluate personalization impact.
- Build predictive and causal models to inform targeting, segmentation and engagement strategies.
- Translate experiment results into actionable personalization rules and partner with ML engineers to operationalize them.
- Define and refine success metrics and guardrails to ensure experiments measure meaningful product/customer outcomes.
- Collaborate with analysts, product managers and engineers to embed rigorous methods into discovery and delivery cycles.

Requirements:
- Strong statistical foundation and experience with causal inference, experimental design and complex measurement challenges.
- Proficiency in Python and SQL and familiarity with Databricks/DBT or similar data platforms.
- Hands-on experience designing and analysing A/B and multivariate tests at scale.
- Experience with recommendation or personalization systems and translating statistical findings into product changes.
- Clear communication skills to present complex results to technical and non-technical stakeholders.
- Ability to work cross-functionally and ensure experimental validity in production environments.

Responsibilities

You will advance recommendation and personalization logic by designing statistical frameworks, causal models, and experimentation strategies. You will also partner with product and engineering teams to integrate these models and define success metrics for personalization quality.

Requirements

The role requires a strong statistical foundation with expertise in Python, SQL, and data pipeline tools like Databricks or DBT. Candidates should have significant experience in designing A/B tests and building recommendation or personalization systems.

Key skills

• Statistical inference — in 3 other listings on The Stack
• Causal inference — in 18 other listings on The Stack
• Python — in 1200 other listings on The Stack
• Pandas — in 35 other listings on The Stack
• Numpy — in 26 other listings on The Stack
• Scipy — in 3 other listings on The Stack
• Statsmodels — in 3 other listings on The Stack
• Scikit-learn — in 26 other listings on The Stack
• SQL
• Databricks
• DBT
• A/B testing
• Recommendation systems
• Personalization
• Predictive modeling
• Experimentation

On The Stack (as of 2026-11-05)

• Lingokids has 8 other listings on The Stack, 8 of them marked as offering visa sponsorship.
• 76 visa-sponsored jobs in Spain on The Stack, posted in the last 60 days.
• 68 visa-sponsored data scientist jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about Lingokids

Is this Data Scientist (Experimentation & Personalization) role still open?

It was posted on 2026-04-07. Listings more than 30 days old may no longer be active, so check Lingokids's site before applying.

Does Lingokids offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Lingokids's site.

Where is this role located?

The listing gives the location as Madrid, ES, Spain. It is marked remote.

What skills does this role ask for?

The listing names: Statistical inference, Causal inference, Python, Pandas, Numpy, Scipy, Statsmodels, Scikit-learn, SQL, Databricks, DBT, A/B testing, Recommendation systems, Personalization, Predictive modeling, Experimentation.