Full-Time

Lead Product Analyst

Experimentation

Posted on 9/15/2025

Welltech

Welltech

Develops mobile health and fitness apps

No salary listed

Madrid, Spain

Remote

Category
Data & Analytics (2)
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Requirements
  • Deep understanding of experimentation fundamentals and statistics
  • Hands-on experience running experiments in Product and/or Marketing
  • Mastery of SQL and Python
  • Strong cross-functional communication skills (Product, Engineering, Marketing, Growth)
  • Proactive, impact-oriented mindset, able to balance rigor with speed
Responsibilities
  • Own and maintain core experimentation datasets (assignment, fact, attribute tables)
  • Ensure integrations with attribution, marketing, and product data systems (dbt, BI, Appsflyer/Adjust)
  • Contribute to the Experimentation Platform roadmap
  • Design and analyze experiments across Product, Growth, and Marketing
  • Apply A/B tests, geo-experiments, platform lift studies, quasi-experiments, causal inference
  • Conduct meta-analyses to uncover broader learnings
  • Develop surrogate/predictive metrics for faster decision-making
  • Research and implement methods when randomization isn’t feasible
  • Partner with Data Science on advanced modeling (incrementality, MMM, attribution)
  • Collaborate with Product and Engineering on feature tests
  • Partner with Marketing and Creative teams on campaign and landing page tests
  • Advise teams running experiments or exploratory analyses
  • Build and deliver trainings, workshops, and playbooks to raise experimentation maturity
  • Identify decision pain points and design solutions to improve testing velocity and quality
Desired Qualifications
  • Experience with causal inference / quasi-experimental methods
  • Familiarity with ad platforms (Meta, Google, TikTok) and incrementality measurement
  • Experience with experimentation platforms (e.g. EPPO, Statsig)
  • Dashboarding skills (Tableau, Looker, Power BI)
  • Analytics engineering skills (dbt, Airflow, data modeling)
  • Leadership potential to mentor peers and grow into a domain lead

Welltech is a global health and fitness tech company with Ukrainian roots that builds mobile apps focused on wellness. The company offers a suite of apps for fitness tracking, weight loss programs, yoga instruction, and intermittent fasting guidance. Users access core features via free apps and pay for premium content through in-app purchases or subscriptions, enabling personalized plans and enhanced content. The products run on mobile devices and are designed to be easy for individuals to use on their own, with revenue coming from direct-to-consumer subscriptions and purchases. Welltech differentiates itself by growing organically without external funding, expanding through multiple European hubs (five centers) and maintaining a sizable global user base with over 220 million installs. Its goal is to help people improve their health and fitness by delivering accessible, scalable wellness tools that people can use anytime, anywhere.

Company Size

N/A

Company Stage

N/A

Total Funding

N/A

Headquarters

N/A

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • Organic growth sustains 753 employees and $25.5M revenue.
  • UK entity diversifies into electromedical equipment manufacturing.
  • Apps foster healthy habits for millions of users worldwide.

What critics are saying

  • MyFitnessPal erodes subscriptions via Under Armour cross-promotions.
  • Apple Fitness+ locks iPhone users with HealthKit exclusivity.
  • Google Fit undercuts $9.99/month with free Gemini AI.

What makes Welltech unique

  • Welltech bootstrapped to $25.5M revenue without external funding.
  • Portfolio exceeds 220 million installs across six apps.
  • Operates hubs in US, Ukraine, Poland, UK, Spain.

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Benefits

Wellness Program

Professional Development Budget

Performance Bonus

INACTIVE