This is Worldline 

Worldline helps businesses of all shapes and sizes to accelerate their growth journey - quickly, simply, and securely. We are the innovators at the heart of the payments technology industry, shaping how the world pays and gets paid. Our technology powers the growth of millions of businesses across 5 continents. And just as we help our customers accelerate their business, we are committed to helping our people accelerate their careers. Together, we shape the evolution. 

The Opportunity 

We are an international team creating the Android Ecosystem for all our offers from our offices in both France, Belgium and Poland. We aim to create an easy-to-use Android Ecosystem for our next-gen Android Terminals upon which any Worldline team can build to serve their own customers. Reliability, openness and ease of integration are our values. You will join a team of experts in payment who are pushing the limits to serve the customers of Worldline faster and better. 

Your responsibilities 

• Architect and implement Android Applications and Cloud Services 

• Be a champion for best practices and industry standards on Android/Kotlin ecosystem. 

• Scope, design, implement, and deploy robust solutions, making appropriate tradeoffs between reliability, throughput, latency, resiliency, engineering velocity and cost 

• Collaborate with cross-functional teams to enhance observability, security, and compliance across our infrastructure. 

• Uphold our high engineering standards and improve our codebase and processes. 

Who Are We Looking For 

We look for big thinkers. People who can drive positive change, step up and show what’s next – people with passion, can-do attitude and a hunger to learn and grow. In practice this means: 

• Bachelor's degree, in Computer Science, IT Engineering or Information Systems. 

• At least 3 years of working experience in complex environments in a similar position, with a consistent track record. 

• Previous experience with Kotlin programming language and exposure to Android ecosystem. Working knowledge on Jetpack & Compose libraries.

• Architecture, data synchronization background processing, multi-threading, and asynchronous programming in Android

• Proficiency in REST JSON / WebSockets

• Familiarity with WebRTC / Media projection

• Solid experience with unit testing (Junit, Espresso)

• Reactive programming (e.g., RxJava, Kotlin Coroutines)

• Experience working in CI/CD environment (GitLab), Gradle build system and dependency management

• Experience with performance optimization and memory management

• Nice to have: encryption and X.509 basics, data AES, DUKPT, SHA

Perks & Benefits 

At Worldline you’ll get the chance to be at the heart of the global payments technology industry and shape how the world pays and gets paid. On top of that, you will also: 

• Be part of a company guided by a strong purpose to do good and recognized as top 1% of the most sustainable companies in all sectors worldwide. 

• Work with inspiring colleagues and be empowered to learn, grow and accelerate your career 

• Hybrid work environement 

Shape the evolution 

We are pushing towards the next frontiers of payments technology, and we look for big thinkers to join our journey. People with passion, can-do attitude and a hunger to learn and grow. Here you’ll work with ambitious colleagues from around the world, take on unique challenges as a team, and make a real impact on the society. And with our empowering culture, strong technology and extensive training opportunities, we help you accelerate your career. Wherever you decide to go. Join our global team of over 18,000 innovators across 40+ countries, and shape a tomorrow that is yours to own.