petaFuel GmbH Tech Stack

Payment processing and mobile banking platform for European financial institutions

Financial Services Freising, Bayern 51–200 employees Founded 2004 Public Company

petaFuel builds payment infrastructure and mobile banking applications for German and European banks, operating as a Mastercard processor since 2009. The tech stack—Java, PHP, Android Studio, Rust—reflects an engineering org mid-modernization: they're actively transitioning to Rust while rebuilding legacy components, and hiring exclusively mid-level engineers in Germany signals a focused push on specific technical migrations rather than broad scaling.

Tech Stack 10 technologies

Core StackJava Rust PHP GitHub GitHub Actions Elasticsearch Android Studio YouTrack Kibana

AdoptingKotlin

What petaFuel GmbH Is Building

◆Challenges

Modernizing legacy components
Transitioning to rust
Psd2 compliance
Integration with payment service providers

▲Active Projects

Xs2a client 'styx' development
Modernizing legacy java/php components
Android app modernization
Developing scalable webapis and backend services
Api integration with payment service providers
Transition to rust

Hiring Activity

Accelerating5 roles · 4 in 30d

Department

Engineering

Seniority

Mid

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About petaFuel GmbH

petaFuel is a financial services technology provider based in Freising, Germany, founded in 2004. The company specializes in custom software solutions for banks and enterprises across payment processing, mobile app development, and business intelligence. Since 2009, petaFuel has operated as an independent Mastercard processor, handling prepaid card processing globally. The core product is VIMpay, a mobile banking application designed to extend payment capabilities for financial institutions. The company also develops and maintains the open-source PSD2 XS2A client 'Styx,' supporting regulatory compliance across European payments.

HeadquartersFreising, Bayern

Company Size51–200 employees

Founded2004

Hiring MarketsGermany

Frequently Asked Questions

What is petaFuel's tech stack?

Primary languages and tools include Java, PHP, Rust, and Android Studio. The engineering team uses GitHub for version control, YouTrack for issue tracking, and Elasticsearch + Kibana for observability. Kotlin adoption is in progress.

What is petaFuel working on?

Active projects include modernizing legacy Java and PHP components, transitioning infrastructure to Rust, Android app modernization, building scalable backend APIs, integrating with payment service providers, and advancing the open-source PSD2 XS2A client 'Styx.'