H

Happening Tech Stack

Gaming platform engine handling millions of bets at massive scale

Technology, Information and Internet London 501–1,000 employees Privately Held

Happening powers Superbet Group's global sports betting and gaming platforms, running production workloads across 501–1,000 employees from a London base. The stack—Kafka, Snowflake, AWS, Docker, plus native mobile (iOS/Android with Swift/Kotlin)—sits behind active projects in observability, real-time data pipelines, and high-scale backend integrations. Heavy senior hiring (29 of 50 roles) in engineering and data signals a mature org tackling deep infrastructure challenges: observability tooling, tech debt reduction, and the operational demands of a high-volume betting platform.

Tech Stack 90 technologies

Core StackSelenium Cypress Playwright Postman Ruby JavaScript Kafka AWS Docker Swift SwiftUI Firebase AppsFlyer Java Kotlin Jetpack Compose Snowflake SoapUI Xray Android iOS RxSwift Git CocoaPods SnapKit Android SDK Rx RxJava MVC WebSockets+60 more

AdoptingAWS

What Happening Is Building

◆Challenges

Scalability challenges
Reducing tech debt
Legal and security challenges
Scaling high-volume betting platform
Stopping bugs from reaching production
Pricing accuracy improvement
Legal compliance
Modern data infrastructure
Centralise data capabilities
Time-to-integrate new providers

▲Active Projects

Improving observability tooling
High-scale backend systems for gaming integrations
Reliability observability stack
Real-time data pipelines
Integrations end-to-end
Improving system automation
Implementing dynamics 365 finance & operations
Enhancing platform for end-user configuration
Scores data quality tools
Elt pipelines

Hiring Activity

Minimal50 roles · 4 in 30d

Department

Engineering

30

Data

6

Product

5

Trading

5

Support

1

Seniority

Senior

29

Mid

10

Staff

6

Manager

2

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About Happening

Happening operates as the core technology platform for Superbet Group's sports betting and gaming brands across multiple markets. The company built its own end-to-end tech stack rather than relying on legacy frameworks, enabling custom solutions for millions of concurrent customers and real-time odds/pricing updates. Product surfaces include mobile apps (iOS, Android) and web frontends integrated with a backend built on Kafka streaming, Snowflake data warehousing, and AWS infrastructure. Teams span engineering, data, product, trading, and support, with active hiring across nine countries including the UK, Croatia, Spain, Belgium, Canada, Brazil, Romania, Serbia, and Peru.

HeadquartersLondon

Company Size501–1,000 employees

Hiring MarketsCroatia, Spain, Belgium, United Kingdom, Canada, Brazil, Romania, Serbia

Frequently Asked Questions

What tech stack does Happening use?

Happening uses Kafka, Snowflake, AWS, Docker, Selenium, Cypress, Playwright, and Firebase. Mobile is built in Swift/Kotlin (iOS/Android). Backend languages include Java, JavaScript, and Ruby. Testing frameworks include Xray and Postman.