> Markdown version of [/jobs/ext/3075956-senior-open-banking-platform-engineer](https://www.wearedevelopers.com/jobs/ext/3075956-senior-open-banking-platform-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Open Banking Platform Engineer - **Company:** Mastercard - **Location:** Valladolid, Spain - **Contract:** Permanent contract - **Skills:** .NET Framework, Microsoft Azure, C Sharp (Programming Language), Continuous Integration, Online Banking, Software Security, Api Design, Terraform - **Published:** September 25, 2026 - **Apply:** https://www.buscojobs.com.es/senior-open-banking-platform-engineer-en-valladolid-ID-373091863 ## About the Role Strong background in API security, infrastructure as code (Terraform), and Azure services is expected, along with a passion for solving cutting-edge banking technology challenges. #J-*****-Ljbffr ## Description Mastercard is seeking a Senior Software Engineer to work on the Open Banking platform, focusing on API development, security, and scalable bank connectivity across Europe. You will join a multinational team with colleagues in Denmark and Poland, using C# with .NET and Azure in a modern CI/CD environment.Strong background in API security, infrastructure as code (Terraform), and Azure services is expected, along with a passion for solving cutting-edge banking technology challenges.#J-*****-Ljbffr