.NET Developer

View All Jobs Date: 25 Aug 2026 Location: Description Ryanair Labs is currently recruiting a .NET Payments Developer to join Europe's Largest Airline Group. This is a very exciting time to join Ryanair as we look to expand our operation to 800 aircraft and 300 million guests within the next 10 years. Ryanair Labs is the technology brand of Ryanair. Labs is a state of-the-art digital & IT innovation hub creating Europe's Leading Travel Experience for our customers. We are looking for an experienced .NET Payments Developer to join our Payments Engineering Team, working alongside talented engineers located in Dublin, Lisbon and Wroclaw. In this role, you will design, develop, and maintain highly scalable payment solutions that process millions of transactions annually, while ensuring exceptional reliability, security, and customer experience throughout the payment journey. Key Responsibilities Design, develop, and maintain high-quality, scalable, and resilient payment services using modern .NET technologies and Agile methodologies. Build and enhance integrations with multiple payment providers, acquirers, gateways, and alternative payment methods. Ensure the reliability, performance, and security of mission-critical payment systems operating at high transaction volumes. Collaborate closely with Product Owners, Business Analysts, Finance, and commercial stakeholders to define and deliver new payment capabilities. Contribute to the architecture and evolution of Ryanair's payment ecosystem, focusing on scalability, observability, and operational excellence. Drive engineering best practices including code quality, automated testing, continuous integration, and continuous delivery. Monitor and optimize payment flows to improve conversion rates, reduce failures, and enhance the customer payment experience. Participate in technical reviews, solution design workshops, and showcases with business stakeholders. Support the introduction of new payment methods and emerging payment technologies across Ryanair's digital channels. Promote continuous improvement and knowledge sharing within the engineering team. Requirements Strong experience developing enterprise applications using C# and .NET Core / .NET. Proven experience building and supporting payment platforms, transaction processing systems, or financial technology applications. Experience integrating with third-party payment gateways, payment service providers, and financial APIs. Solid understanding of payment processing concepts, including authorization, capture, settlement, refunds, chargebacks, and reconciliation. Experience delivering cloud-native microservices in AWS environments is a plus, using services such as ECS, EKS, SNS, SQS, Lambda, and CloudWatch. Strong knowledge of RESTful APIs, event-driven architectures, and distributed systems. Experience with relational and NoSQL databases. Hands-on experience with Docker and Kubernetes would be valuable. Experience implementing CI/CD pipelines and modern software delivery practices. Strong understanding of automated testing, unit testing, and integration testing. Ability to develop robust, high-volume, customer-facing applications in a fast-paced environment. Excellent problem-solving and communication skills with the ability to collaborate across multiple teams. Technical Stack C# .NET Framework 4.x, .NET Core, and modern .NET ASP.NET Core, Web API REST APIs, JSON, XML AWS (ECS, EKS, Lambda, SNS, SQS, CloudWatch) Docker, Kubernetes Git, Bitbucket, Jira, Confluence SQL and NoSQL databases xUnit and automated testing frameworks CI/CD, Infrastructure as Code Microservices and event-driven architectures Object-Oriented Design Principles and Design Patterns Benefits We promote innovation, all our teams are Agile and several PoCs of new technologies or innovative ideas are launched every week. A competitive but flexible technical career plan. We believe in a hybrid working model, you can work up to three days per week remote, but you are also going to enjoy the excellent work environment at our modern offices in the heart of Madrid Optional discounts on health insurances (various companies). Travel discounts, of course!. Competencies Dependability Communication AWS (Amazon Web Services)