.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, Madrid, Alicante, Palma de Mallorca or Milan (hybrid) to deliver the best payment journey to our customers and create and design new financial products for our customers. 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 they collect more than €423M in cash revenue per year, while at the same time protecting ourselves from fraud using ML algorithms.What you will do:The Role's Key Responsibilities and Tasks:Work closely with product owners, data scientists, UX designers to: Integrate & offer customers the most innovative payment methods; Create new innovative payment plans and products; Design and develop a super convenient payment experience; Create an intelligence anti-fraud engine based on big data; Stay ahead of the payments regulations and optimise our collection success.You will work with cutting edge technologies including Java+11, BigData (Kafka, Cassandra, BigTable, Redis, Neo4j), machine learning and Datamesh in a continuous delivery and cloud based environment (Docker, Kubernetes and GCP). Everything is supported by a high quality monitoring process with Sonarqube and Datadog.Create distributed, scalable microservices platforms, where software gets deployed daily, with high quality, clean code, SOLID principles, design patterns and TDD.Promote the use of microservices platforms, clean code and SOLID principles and TDD to the rest of the team.Be independent when working with the modules on your area of expertise, in any phase of the SDLC.Design & develop advanced systems and innovative solutions that help us solve big problems related to finance, payments or fraud. Share them with both technical and non technical audiences.Code the solutions with the highest quality through good design, attention to detail and test quality. Be a referral of best practices within the team.You will work in a fully agile organisation, using Kanban practices to deliver business value continuously. You will actively participate in team ceremonies and events, as well as the product definition and ideation processes, as part of a high performing cross functional team, working with other top engineers, product managers, architects, UX designers to design, build, operate and evolve the Payments Domain microservices platform. You will receive mentorship and support to help you develop your career super fast as well as use your senior expertise to mentor and help develop 2 -3 team members.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