Fabulous Tech Stack

Mobile habit-building app using behavioral science and experimentation

Wellness and Fitness Services Paris, France 51–200 employees Founded 2013 Privately Held

Fabulous is a behavioral-science-driven mobile wellness app founded at Duke and now operating from Paris with a 51–200-person team. The tech stack (Node.js, Kotlin, GCP, Firebase, BigQuery, dbt, Amplitude) reveals a data-driven product org: heavy instrumentation via Amplitude, centralized analytics via BigQuery + dbt, and active A/B testing on Firebase. The hiring mix skews product (11 roles) and engineering (8), with minimal recent hiring velocity, suggesting the company is consolidating around core product and experimentation rather than expanding headcount.

Tech Stack 33 technologies

Core StackNode.js Kotlin Java Fivetran BigQuery dbt Amplitude Metabase Python Slack Swift Looker JavaScript Firebase Retool ESLint GCP Android iOS Looker Studio SQL R Google Search Meta Pinterest TikTok Twitter Data Studio Google Workspace JSON+1 more

AdoptingKotlin Multiplatform

What Fabulous Is Building

◆Challenges

Optimizing key metrics
Managing tech debt
Data discrepancies
Reducing friction in sharing moments
Measuring lift of habit choices
Measuring tradeoffs on successful actions
Scaling web campaigns
Optimizing performance across channels
Launching new channels
Improving data observability

▲Active Projects

Translations of winning experiments into other languages
Analytics pipelines
Experiment launches on google firebase
New network onboarding
Growth engineering initiatives
Marketing optimizations engines
Billing reporting
Dbt project
Reduce friction in sharing moments
Measure lift of habit choices

Hiring Activity

Minimal30 roles · 2 in 30d

Department

Product

Engineering

Support

Data

Marketing

Seniority

Mid

Senior

Junior

Manager

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About Fabulous

Fabulous builds mobile apps that use behavioral economics and habit-science research to help individuals and teams establish lasting health routines. The product spans use cases including ADHD support, sleep, deep work, gratitude, nutrition, and exercise — each shaped by evidence-based interventions. Technically, the company runs a data pipeline architecture (Fivetran → BigQuery, modeled in dbt) and leans heavily on experiment infrastructure (Firebase, Amplitude) to validate feature changes. The team is distributed across France, Poland, Germany, the US, Ukraine, Portugal, and Canada. Founded in 2013, the company operates as a privately held firm focused on tech-for-good positioning in the consumer wellness space.

HeadquartersParis, France

Company Size51–200 employees

Founded2013

Hiring MarketsFrance, Poland, Germany, United States, Ukraine, Portugal, Canada

Frequently Asked Questions

What tech stack does Fabulous use?

Node.js, Kotlin, Java, Swift, GCP, Firebase, BigQuery, dbt, Amplitude, and Metabase. They're adopting Kotlin Multiplatform for cross-platform mobile development.

Where is Fabulous headquartered?

Paris, France. The company was founded in 2013 and operates with a distributed team across seven countries.