Senior Java Software Developer (F/M/D)

Rubean AG is a multinational fintech company based in Munich, Germany, and the leading provider of pure software point-of-sale solutions for banks, acquirers, and merchants. With our solution, regular smartphones become secure and fast payment acceptance terminals (POS devices) without any additional hardware.

About the role:

• Full Time
• From today
• Permanent contract

Why is this role interesting for you?

Rubean AG is at the forefront of the digital transformation that everyone is talking about these days. Since the pandemic, payments have transitioned more and more away from regular cash to card payments or online transactions. While mobile phones and other wearables can act with a virtual payment card when making a purchase, the Rubean platform allows merchants, delivery personnel, and every businessperson to accept card payments on their regular mobile phone in a secure and certified way.

In our international team, you can contribute to innovative, intuitive, as well as secure services of the Rubean payment SAAS platform that allow backend processing in a scalable and modern way on a state-of-the-art infrastructure in Docker containers, orchestrated by Kubernetes.

At Rubean, you can make an impact and enhance the solution that many customers use to ensure they get paid for their services. At the same time, you can continuously develop your strengths and learn from your specialist colleagues.

Your tasks as a Java developer:

• Development of clean and efficient code based on specifications and guidelines
• Development of services and components
• Troubleshooting programming issues and ensuring a productive work environment
• Maintenance and regular improvement of existing software
• Pre-launch analyzing and testing
• Ensuring software security by applying the standards of the PCI (Payment Card Industry)
• Proactively seeking ways to improve processes and interactions, addressing the business needs
• Helping and supporting your team colleagues

Agile concepts and especially the inspect-and-adopt approach in line with optimization-focused thinking is part of our team DNA at Rubean.

Your profile:

• IT-/tech-related academic degree (bachelor’s or master’s degree), ideally in Computer Science
• Several years of experience using Kubernetes native Java-stacks, e.g., Micronaut, Quarkus, Spring Boot
• Good knowledge of redundant, highly available, and highly scalable systems, service-based architectures, API-centric system designs, and development environments
• Knowledge of dependency injection, software design patterns, and continuous integration
• Language skills: English, fluent German is a plus

Nice to have:

• Experience with image-based deployments (Kubernetes) in a private cloud environment using Docker and Jib builds
• Good knowledge of the Microprofile microservice standard
• Good knowledge in Prometheus and Grafana for monitoring our services
• Knowledge of IAM integrations such as Keycloak
• Profound knowledge in Message Queues such as Kafka, MongoDB Change streams
• Profound knowledge in MongoDB (NoSQL)

What are the benefits of working at Rubean?

• 30 days of holiday
• Smart colleagues to learn from
• Flexible working times around key working hours of your team
• Fair remuneration and a wide range of social benefits

If you are interested, please send your application to:

Rubean is a leading provider of Software Point of Sale (SoftPOS) terminals for accepting contactless card payments on mobile devices, such as regular mobile phones. Small to large retailers, delivery services, and restaurants have been using the PCI MPoC verified software since 2020 under the PhonePOS brand in Europe and Latin America.
PhonePOS is the only SoftPOS solution that supports Germany’s most widely used girocard .

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