Sleep Cycle Tech Stack

Mobile sleep-tracking app with 3B+ sessions and patented sound technology

Wellness and Fitness Services Gothenburg, Västra Götaland County 11–50 employees Founded 2009 Public Company

Sleep Cycle is a public mobile app (Nasdaq: SLEEP) built on Swift/Kotlin for iOS and Android, processing data from over 3 billion recorded sleep sessions. Engineering hiring is concentrated on modernizing legacy backend services and scaling infrastructure (FastAPI + GCP + BigQuery), with concurrent work on AI-powered features — a shift from pure analytics toward predictive guidance.

Tech Stack 29 technologies

Core StackSwift SwiftUI Kotlin Jetpack Compose Java Python FastAPI GitHub Actions Linux BigQuery Next.js TypeScript React WordPress Braze Google Analytics Objective-C Git CI/CD GCP iOS Android C/C++ HTML CSS Webflow Recoil

What Sleep Cycle Is Building

◆Challenges

Modernising legacy services
Scaling backend systems
Ensuring sdk reliability at scale
Accurate data attribution
Maintaining affiliate platform

▲Active Projects

System replacements
Modernisation of legacy services
Ai-powered features for sleep app
Affiliate platform development
Analytics tracking integration
App skin implementation

Hiring Activity

Accelerating8 roles · 5 in 30d

Department

Engineering

Marketing

Seniority

Mid

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About Sleep Cycle

Sleep Cycle operates a consumer sleep-tracking application with millions of active users across iOS and Android. The core product uses patented audio technology to detect sleep phases and deliver personalized insights. The company is headquartered in Gothenburg, Sweden and trades publicly on Nasdaq Stockholm. Current engineering focus spans backend modernization, SDK reliability at scale, and new AI-driven features, alongside infrastructure work on analytics attribution and an emerging affiliate platform.

HeadquartersGothenburg, Västra Götaland County

Company Size11–50 employees

Founded2009

Hiring MarketsSweden

Frequently Asked Questions

What tech stack does Sleep Cycle use?

Swift, SwiftUI, Kotlin, and Jetpack Compose for mobile (iOS/Android); Python, FastAPI, and GCP on the backend; BigQuery for analytics; and Next.js/React/TypeScript for web properties.

Where is Sleep Cycle headquartered?

Gothenburg, Västra Götaland County, Sweden. The company trades publicly on Nasdaq Stockholm under ticker SLEEP.