.As you contemplate your future, you might be asking yourself, what's the next step? Start your journey with us!We're seeking an experienced Java Senior Software Engineer to join our Checkout Team in Barcelona (hybrid) to deliver the best payment journey to our customers and create and design new financial products. If you're ready to soar, we're ready to take you there.You will join us in the Payments Domain, where our systems create 100K products every day and collect more than €423M in cash revenue per year, while protecting against fraud using ML algorithms.What you will do:The Role's Key Responsibilities and TasksAs a Java Senior Software Engineer in the Checkout Team, you will:Work closely with product owners, data scientists, and UX designers to integrate and offer innovative payment methods, create new payment plans and products, design a convenient payment experience, and develop an intelligence anti-fraud engine based on big data.Utilize cutting edge technologies including Java 11, Big Data (Kafka, Cassandra, BigTable, Redis, Neo4j), machine learning, and Datamesh in a continuous delivery and cloud-based environment (Docker, Kubernetes, GCP).Create distributed, scalable microservices platforms, with daily deployments, high quality, clean code, SOLID principles, design patterns, and TDD.Promote the use of microservices platforms, clean code, SOLID principles, and TDD within the team.Work independently on modules in your area of expertise throughout the SDLC.Design and develop advanced systems and innovative solutions related to finance, payments, or fraud, and share them with both technical and non-technical audiences.Code solutions with high quality through good design, attention to detail, and test quality.You will work in a fully agile organization, using Kanban practices to deliver business value continuously. You will participate in team ceremonies and events, as well as the product definition and ideation processes, as part of a high-performing cross-functional team.What you need to succeed:Deep understanding of software engineering concepts such as OOP, functional programming, concurrency, data structures, design and architecture patterns, databases, APIs, etc.Experience with the entire software development cycle, including deploying to production and testing (unit and integration), as well as Cloud and Continuous Delivery environments.Strong data-driven capabilities, analytical skills, design pattern skills, and creativity.Ambition to provide resilient, high-performing solutions to complex problems.Strong focus on quality and a technical excellence mindset.Excellent communication skills and an open mind for collaboration.Ability to visually represent solutions in standard diagrams for technical and non-technical audiences.Strong organizational skills and the ability to prioritize tasks effectively.Fluent English to work in a multicultural environment.A strong mindset for continuous learning and improvement