Data Scientist

Luni; Paris; Sur place; EUR 55 000 - 75 000; Plein temps

Avantages offerts par ce poste

Unlimited vacation

Daily meal vouchers

Company and retirement savings plans

€1,800 annual allowance for personal services

On-site gym or gym membership in Paris

Nursery spots and paid parental leave

Résumé du poste

A leading mobile app publisher seeks a Data Scientist in Paris to enhance growth strategies through data analysis. The role involves optimizing monetization and user acquisition, requiring a Master's degree in Mathematics, 5+ years in Data Science, and expert-level skills in Python and SQL. The company offers flexible work options, wellness perks, and a vibrant culture.

Qualifications

• 5+ years in Data Science experience.
• Expert-level mastery of Python programming.
• Strong knowledge of inferential statistics and experimentation protocols.

Responsabilités

• Use data science to maximize Lifetime Value and optimize marketing investments.
• Analyze campaign profitability across channels.
• Build and maintain automated dashboards for teams.

Connaissances

Python

SQL

A/B testing

Data analysis

Statistics

Mobile analytics

Attribution tools

Formation

Master’s degree in Mathematics or a scientific/engineering field

Outils

PostgreSQL

Apache Spark

Amplitude

Appsflyer

Description du poste

Who are we?

At Luni, we create B2C mobile apps that improve everyday lives, stand out through quality content, and explore new ways to experience products. As a top ten global app publisher with millions of users, our hits include 🎬 Shorts, ⭐️ Astro Club and 🖨️ Scanner. Most of our revenue comes from in-app subscriptions in the US.

Our culture

We value flexibility, collaboration, and ownership. Team members have the freedom to take initiative, share ideas, and challenge the status quo - all within a culture built on trust, attention to detail, and continuous learning.

👀 Learn more about Luni in this French podcast: Adrien Miniatti - Créer en 3 ans un leader mondial autofinancé par l'Appstoreby Matthieu Stefani - "Generation Do it Yourself"

About the role

As a Data Scientist, you will play a central role in the company’s growth strategy. You will work at the intersection of Product, Marketing, and Finance to turn data into concrete growth levers. Your main mission will be to use data science to maximise Lifetime Value (LTV) and optimise marketing investments (ROAS).

What you will do?

1. Monetisation Optimisation (Revenue Ops)

• Revenue analysis: Deep understanding of purchase behaviour and conversion funnels (Free → Paid, IAP → Subscription).
• Pricing & Packaging: Recommend pricing strategies and monitor paywall performance.
• A/B Testing: Analyse tests on paywalls, ad placements, and onboarding flows.
• LTV & ROAS prediction: Build ML models to forecast LTV, ROAS, and determine the breakeven point.
• Churn prediction: Identify high-risk segments and suggest targeted retention actions.

2. User Acquisition Optimisation

• UA performance analysis: Assess campaign profitability across channels (Meta, Google, TikTok, etc.) based on ROAS and CPI.
• Attribution: Work with Appsflyer to refine attribution models and understand channel contribution.
• Traffic optimisation: Identify high-quality traffic sources and recommend budget allocation.

3. Data Culture & Tools

• Dashboards: Build and maintain automated dashboards (Metabase, Streamlit, Dash) to make teams autonomous with data.
• Data quality: Ensure reliable and consistent data collection.
• Market watch: Stay up to date with global mobile benchmarks and new data science methodologies.

Who you are?

Technical Skills

• Education: Master’s degree in Mathematics or a scientific/engineering field.
• Experience: 5+ years in Data Science.
• Programming: Expert-level mastery of Python.
• Statistics: Strong knowledge of inferential statistics and experimentation protocols (A/B testing).
• Databases: Advanced SQL (PostgreSQL). Experience with Apache Spark is a plus.
• Mobile Tools: Familiarity with mobile analytics (Amplitude) and attribution tools (Appsflyer) is a plus.

Soft Skills

• Business-centric: You think in terms of ROI.
• Pedagogy: Able to explain complex concepts to non-technical stakeholders.
• Rigor & Curiosity: You dig deep into data and always look for the “why.”
• Autonomy: You can prioritise effectively in a fast-moving environment.

🚀 Why join Luni?

• Flexible Time Off & Work: Unlimited vacation, 2 remote days/week and work remotely for up to 30 consecutive days abroad.
• Daily Comforts: Daily meal vouchers and Friday brunches once a month.
• Financial Well-Being: Company and retirement savings plans.
• Work-Life Balance with Benefiz: €1,800 annual allowance for personal services, culture, sports, remote-work equipment, vacations, and more.
• Wellness Perks: On-site gym in Bordeaux or Gymlib in Paris, plus a 100%-covered Benefiz health plan for you and your family.
• Family Support: Dedicated nursery spots, extra paid parental leave, and customised family-friendly benefits.
• Continuous Growth: Access to conferences, workshops, and training.
• Vibrant Culture: Choose to work from Bordeaux, Paris, or remotely, and connect through team-building events and seminars.

Equal opportunity employer

Research shows that women and other marginalised groups tend to only apply for a job when they meet every single criteria. Does this role sound like it was made for you, yet you don’t check every box? Reach out anyways! We’re an equal opportunity employer and are dedicated to fostering an inclusive and diverse environment for employees from all walks of life. We hire based on talent, and we’re proud of our global perspective.

Location: Paris, Île-de-France, France.