happn Tech Stack

Location-based dating app serving 160M+ users across Europe, South America, Turkey, and India

Internet Publishing Paris 51–200 employees Founded 2014 Privately Held

happn operates a mature mobile-first dating platform built on Swift/Kotlin + Firebase + GCP, with a backend stack (Spring Boot, ScyllaDB, Elasticsearch, Kubernetes) built for scale. The company's engineering org is structured around platform stability and optimization rather than expansion—5 active roles across engineering and data, all mid-to-lead level, with zero new postings in the past month. Internal focus on technical debt and architecture alignment suggests a shift from growth-at-all-costs toward consolidation and user experience refinement, reinforced by active A/B testing work.

Tech Stack 26 technologies

Core StackSwift SwiftUI GitHub Figma GitHub Actions Firebase Kotlin Java ScyllaDB Elasticsearch Docker Kubernetes Prometheus RxSwift Lottie Swinject Swift Testing Xcode Charles Hilt Room Retrofit Android Android Studio Spring Boot GCP

What happn Is Building

◆Challenges

Dating experience optimization
User knowledge improvement
Technical debt management
Platform maintenance
Technical architecture alignment

▲Active Projects

A/b testing experiments

Hiring Activity

Minimal5 roles · 0 in 30d

Department

Engineering

Data

Seniority

Mid

Senior

Lead

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About happn

happn is a location-based dating app that connects users based on real-world encounters and proximity rather than profiles alone. Founded in 2014 and headquartered in Paris, the platform has built a global user base exceeding 160 million, with particularly strong penetration in Western Europe, Brazil, Argentina, Turkey, and India. The product is built on mobile-native architecture (Swift on iOS, Kotlin on Android) backed by a cloud infrastructure on GCP, with real-time capabilities powered by Elasticsearch and ScyllaDB. The company operates as a privately held entity with a lean, engineering-focused team concentrated in France.

HeadquartersParis

Company Size51–200 employees

Founded2014

Hiring MarketsFrance

Frequently Asked Questions

What tech stack does happn use?

iOS: Swift, RxSwift, SwiftUI, Lottie. Android: Kotlin, Hilt, Retrofit, Room. Backend: Spring Boot, ScyllaDB, Elasticsearch. Infrastructure: GCP, Kubernetes, Docker, Firebase, Prometheus.

How many users does happn have?

Over 160 million users globally, with significant communities in Western Europe, Brazil, Argentina, Turkey, and India.