Description
Mastercard is seeking a Senior Software Engineer to join their Open Finance Europe – Connectivity team. The successful candidate will be responsible for designing, building, and operating secure, reliable backend services. They will work on complex engineering problems, contribute to system design decisions, and deliver high-quality solutions that operate at scale in production environments.
Responsibilities:
- Design, develop, test, and support scalable APIs and backend services
- Contribute to system design decisions with a focus on scalability, resilience, and performance
- Deliver high-quality, production-ready code across the full software development lifecycle
- Troubleshoot and resolve production issues, ensuring system stability and reliability
- Participate in code reviews and uphold engineering best practices and standards
- Implement effective testing strategies (unit, integration, end-to-end)
- Collaborate with cross-functional teams including Product, Architecture, Security, and SRE
- Improve observability, automation, and operational efficiency across services
Technology Stack:
- Backend: C#, .NET, Web APIs
- Cloud: Azure (App Services, KeyVault, Blob Storage), AWS (S3, Redis, Microservices)
- Data: PostgreSQL, Flyway
- Practices: CI/CD pipelines, observability, secure development
- Plus: Java / Spring Boot, AI-assisted tools (e.g., GitHub Copilot)
Requirements:
- 3-5 years of professional software engineering experience
- Strong hands-on experience building cloud-based, distributed backend systems
- Solid expertise in API development, scalability, and production support
- Ability to solve complex technical problems with a structured, pragmatic approach
- Strong understanding of SDLC, testing practices, and secure coding principles
- Proven ability to own and deliver components/services independently
- Strong collaboration and communication skills
Preferred:
- Experience in payments, banking, or Open Banking (PSD2) environments
- Experience working with microservices architectures
- Familiarity with observability, monitoring, and incident response practices
- Exposure to AI-assisted development tools (e.g., GitHub Copilot)