Andersen is hiring a Backend Developer (.NET) with Spanish/Portuguese to build secure, scalable APIs and backend integrations for insurance systems in a regulated environment. The customer is a large international organization operating in the insurance and risk protection domain, providing a wide range of services for both individual and corporate clients. The customer has a strong global presence, delivers diversified insurance solutions across multiple lines of business, and is known for its mature operational model, financial stability, and well-established expertise in service delivery and claims management. The project is focused on building secure, scalable backend integrations between internal insurance systems and external partner claim management platforms. It involves designing and implementing cloud-based APIs to ensure reliable data exchange, high performance, and stability within a regulated enterprise environment. Responsibilities: Developing backend APIs using C#, .NET Core, ASP.NET Core. Implementing integrations with internal and external systems. Writing clean, testable, production-ready code. Participating in code reviews and architecture discussions. Debuging production issues and support releases. Working closely with Lead, QA, and BA. Must-haves: Experience in backend development for 4 years. Strong knowledge of C# .NET Core / ASP.NET Core REST APIs. Experience with cloud platforms (Azure preferred). Experience with SQL databases Understanding of distributed systems Experience with CI/CD and Git workflows. Level of English – from Upper-Intermediate and above. Level of Spanish/Portuguese – from Upper-Intermediate and above. Nice-to-haves: Experience in OpenAPI / Swagger. Experience in NoSQL. Experience in enterprise integrations. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & ...