.At Codefield we are now looking for a Senior Java Kotlin Software Engineer for one of our clients. This is a fully remote position based out of Spain. You will be joining our client as a Senior Java Kotlin Software Engineer and contribute to transforming the European payment landscape. Together, you will not just build another payment solution; you will be creating a stronger European payment ecosystem for consumers across all of Europe.Your impactTechnical leadership and developmentLead the architecture and development of our client's cloud-based microservices, focusing on scalability, performance, and business alignment.Set high code quality standards, employ best practices for maintainable code, and oversee end-to-end feature development for timely delivery and stakeholder alignment.Strategic decision-makingOversee the platform's development with strategic decisions, considering current needs and growth expectations.Drive innovation within your team to solve complex problems and improve efficiency.Cross collaborationCollaborate closely with cross-functional teams like product management & design, web development, and QA to ensure smooth development and excellent products.Technology stackKotlin, Ktor, MongoDB, OpenAPI, DockerAWS, Event Sourcing, Kubernetes, KotestTo succeed, you should meet at least 70% of these requirements8+ years of professional experience in software development.Proven experience in building scalable system architectures and familiarity with modern design patterns and REST API design, coupled with a dedication to clear technical documentation.Ability to recognize and implement effective automated tests at suitable levels of involvement.Proficiency in core backend technologies like Kotlin, Ktor, Docker, Kubernetes, AWS, and MongoDB.Proficient in English communication for effective collaboration and stakeholder engagement.Experienced in Agile methodologies, adaptable to changing project needs and timelines.About the teamYou'll be part of a Pan-European Product and Engineering team that operates in an Agile environment. You'll work closely — but fully remotely — with experts in Product Design, Web Dev, Mobile Dev, Backend Dev, QA and DevOps from Germany, Austria, France, the Netherlands, Poland, Portugal, Spain and other European locations.If this looks like you, the recruitment steps are:A first call with one of our Codefield recruitersA call with one of our client's recruitersTechnical interview with one of our client's Senior EngineersFinal interview with our client's Chief of Product & EngineeringHopefully, an offer you can't refuseTurn back if ...You're not passionate about web technologies or not willing to work in a fully remote environment.Otherwise apply!Who is our client?Our client has a unique role in bringing the various players in the payment industry together