Description
Mastercard is seeking a Senior Software Engineer to join its Open Finance Europe – Connectivity team. As a Senior Software Engineer, you will be a key hands-on contributor responsible for designing, building, and operating secure, reliable backend services.
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
Requirements:
- 5–8 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)