Senior Software Engineer

Senior Software Engineer

Mastercard Open Finance is building trusted, secure, and high-performing services that power a world beyond cash. As a Senior Backend Engineer, you will be responsible for the analysis, design, development, and delivery of software solutions across our Open Finance platforms. You will define and refine backend requirements and integrations to Mastercard standards, processes, and best practices; develop, customize, and test services; and provide leadership, mentoring, and technical training to other team members. You'll collaborate closely with Product Owners, Solution Architects, and Development Leads to ensure our solutions meet business and regulatory needs while maintaining enterprise-grade resilience, performance, and security.

Roles

• Plan, Design & Deliver: Plan, design, and develop technical solutions and alternatives to meet business requirements in adherence with Mastercard engineering standards, processes, and best practices.
• Service Ownership: Lead day-to-day backend development and maintenance activities to meet SLAs, delivering solutions with innovation, cost effectiveness, high quality, and faster time to market.
• End-to-End SDLC: Own the full development life cycle — produce high-quality technical artifacts (requirements, use cases, designs), detailed test strategies, performance benchmarks, rollout/deployment and contingency plans, feasibility analyses, and accurate estimates.
• Operate & Improve: Perform system maintenance and production incident/problem management, including root-cause analysis, remediation, and participation in on-call rotations. Maintain solution and technology roadmaps.
• Frameworks & Methodology: Select appropriate technical frameworks and delivery methodologies; adapt templates and artifacts to project and technology needs; contribute to continuous improvement of standards and processes.
• Evaluate & Experiment: Research and evaluate current and emerging technologies and frameworks; participate in proofs of concept; support vendor/technology/methodology selection.
• Ecosystem Collaboration: Collaborate with vendor resources for product support and ensure effective knowledge transfer to Mastercard staff; conduct brownbag sessions and provide technical training/mentoring.
• Quality First: Champion QA/QC processes—ensure robust unit, integration, system, security, and performance testing; conduct and participate in requirements, design, code, and security reviews; raise the bar on automation and reliability.
• Agile Ways of Working: Contribute to agile ceremonies, drive backlog quality, and coordinate with offshore teams to ensure clarity, throughput, and predictable delivery.
• Security & Compliance: Build secure, compliant services aligned with Mastercard security policies and relevant Open Finance regulations and standards (e.g., PSD2/RTS, data protection).

All About You

Knowledge & Experience:

• 3–5 years of backend engineering experience; financial services experience delivering secure solutions preferred but not required.
• Broad understanding of software engineering concepts and methodologies (microservices, APIs, data stores, CI/CD, observability).
• Proven experience producing high-quality technical documentation and SDLC artifacts.

Technical Strengths (examples welcome!):

• Building distributed services (e.g. C# .NET / Java), REST APIs, event-driven systems, relational/NoSQL data stores.
• CI/CD pipelines, containerization/orchestration, infrastructure as code, automated testing.
• Performance engineering, resilience patterns, and secure coding practices.

Skills & Abilities:

• High-energy, detail-oriented, proactive; able to perform under pressure and work independently in a fast-paced environment.
• Strong initiative and self-motivation with a drive for results and continuous learning.
• Excellent communication (verbal and written), relationship-building, collaboration, and organizational skills; effective across diverse, geographically distributed teams.
• Mentors others, promotes a positive and inclusive engineering culture, and models ownership and accountability.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks come with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard's security policies and practices;
• Ensure the confidentiality and integrity of the information being accessed;
• Report any suspected information security violation or breach, and
• Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.