Backend Engineer (Java) - WFH

# Software Engineer – Cashless Payments

## About the Role

Worldline is a global payments technology company helping businesses accelerate growth through secure, reliable, and innovative payment solutions. In the development office in Biel/Bienne, Switzerland, you will join the Frontoffice department and contribute to software solutions supporting cashless transactions across Switzerland and international markets.

You will work as part of an agile, DevOps-oriented, cross-functional squad distributed across Switzerland and Italy. The team develops and operates applications that form part of the backbone of payment services and process more than 20 million transactions every day. This role offers the opportunity to work with modern technologies while contributing directly to the reliability, scalability, and evolution of payment processing systems.

## Key Responsibilities

* Design, build, test, and maintain new features for cashless payment applications using modern technologies.

* Develop reliable, robust, and scalable software solutions for payment processing.

* Collaborate with Product Owners and Business Engineers to translate customer and business needs into effective technical solutions.

* Write clean, well-documented, maintainable, and testable code.

* Participate in code reviews and contribute to software quality and engineering standards.

* Take ownership of deployment, monitoring, and incident response for assigned components.

* Provide third-level support and participate in on-call duties.

* Improve application performance, scalability, reliability, and monitoring.

* Contribute to the optimization of deployment infrastructure.

* Participate in defining and evolving the future technology roadmap.

* Work effectively within an agile, cross-functional, and distributed engineering team.

* Support operational excellence across applications processing high volumes of payment transactions.

## Required Qualifications

* Higher education in Information Technology, such as a university degree or equivalent.

* Strong programming proficiency in Jakarta EE.

* Strong understanding and experience with relational databases.

* Experience with:

* Git

* Maven

* Quarkus

* Docker

* Kafka

* Linux

* Ability to work collaboratively as part of a cross-functional engineering team.

* Strong problem-solving skills with the ability to break down complex technical problems and drive solutions.

* Proven ability to work effectively under pressure, including during major outages.

* Fluent English.

## Preferred Qualifications

* French, German, or Italian language skills.

* Experience with payment processing or cashless payment technologies.

* Experience working in agile and DevOps environments.

* Experience with distributed systems and high-volume transaction processing.

## Technology & Engineering Environment

* Backend: Jakarta EE, Quarkus

* Databases: Relational databases

* Messaging: Kafka

* DevOps & Infrastructure: Docker, Linux, Maven, Git

* Operations: Deployment, monitoring, incident response, third-level support

* Development Model: Agile, DevOps, cross-functional squads

## Work Arrangement & Benefits

* Mobile working within Switzerland.

* Flexible working time models.

* Up to 25 days per year of international remote working.

* Financial support for public transport tickets.

* Access to the company's staff restaurant.

* Comprehensive continuing education and training programs.

* Additional offers and support for families.

* Potential participation in the Innovation Festival @ Worldline.

* Employee Share Program providing employees with a financial stake in the company's long-term success.

* Sustainable and international corporate culture.

* Equal Opportunity employer.