Senior Software Engineer
Full-time
Mastercard
Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary
Senior Software Engineer
Overview
Mastercard is a global technology company in the payments industry, focused on powering an inclusive, digital economy that makes transactions safe, simple, smart, and accessible. Using secure data and networks, our innovations enable individuals, financial institutions, governments, and businesses worldwide to realize their greatest potential. Within Mastercard’s Builders Enablement Program (ONE Division), we are building a standardized, secure, cloud first software delivery ecosystem and delivering a world class developer experience. We are seeking a Senior Software Engineer to design, build, and advance internal developer platforms through modern, data-driven user interfaces. This role requires deep technical expertise, end-to-end ownership, and the ability to lead complex engineering initiatives across architecture, development, and operations. About the Role Software Design & Architecture Lead end-to-end software design and architecture, translating business and system requirements into scalable, reliable, and maintainable solutions Define high- and low-level design artifacts, including APIs, data models, system interactions, and component boundaries Establish and enforce architecture standards, design patterns, and engineering best practices across teams Apply deep knowledge of data structures, algorithms, and distributed system design to solve complex performance and scalability challenges Software Development Excellence Own delivery of robust, secure, and high-performance software across backend platforms and frontend applications (React, TypeScript) Drive engineering excellence in coding standards, modular design, and maintainability Build and enhance internal developer platforms using Backstage or similar frameworks, leveraging plugin-based architectures Develop data-driven user interfaces that surface observability and operational insights Testing Strategy & Quality Engineering Define and implement comprehensive testing strategies, including: Unit testing Integration testing Functional/end-to-end testing Embed automated testing within CI/CD pipelines to enforce quality gates and prevent regressions Ensure systems meet correctness, reliability, and backward compatibility requirements at scale Performance Engineering Lead performance engineering initiatives, including system benchmarking, load testing, and capacity planning Analyze system bottlenecks and optimize latency, throughput, and resource utilization across distributed architectures Ensure applications meet strict performance SLAs in high-volume, mission-critical environments Secure Coding & Compliance Enforce secure coding practices and integrate security into every phase of the SDLC Design systems that meet enterprise security, regulatory, and compliance requirements Partner with security teams to proactively identify and remediate vulnerabilities Troubleshooting & Incident Management Serve as a senior escalation point for complex production issues across distributed systems and user-facing platforms Lead root cause analysis, incident resolution, and postmortem activities Drive systemic improvements to prevent recurring issues and improve system reliability Code Review & Technical Leadership Lead rigorous code reviews, ensuring adherence to best practices in design, performance, security, and maintainability Mentor engineers and elevate team capability in software design, testing, debugging, and operational excellence Provide hands-on guidance in solving high-complexity technical problems across system layers Collaboration & Ownership Partner with product, platform, and business stakeholders to shape technical roadmaps and delivery priorities Own and deliver cross-functional initiatives spanning frontend, backend, and platform engineering Contribute to the Software Engineering Guild by sharing reusable frameworks, patterns, and innovations All About You We are looking for someone who: Demonstrates deep expertise across software development, system design, and architecture Brings a strong foundation in data structures, algorithms, and distributed systems Is equally comfortable working across backend platforms and frontend applications Leads with a quality-first mindset, emphasizing testing, security, and performance Excels at troubleshooting complex systems and driving resolution under pressure Proactively improves operability, reliability, and developer experience Influences technical direction and mentors engineers across teams Qualifications: Extensive experience in software development and system design, with demonstrated ownership of large-scale distributed systems Deep expertise in: Software Design & Software Architecture Data Structures & Algorithms Troubleshooting complex distributed systems Strong hands-on experience with: Unit, Integration, and Functional Testing frameworks and strategies Performance Engineering and system optimization Secure coding practices and application security principles Code reviews and engineering quality standards Operability engineering (observability, monitoring, reliability) Proficiency in modern programming languages (e.g., Java, C#) and frontend development using React and TypeScript Experience building internal developer platforms (Backstage or similar) Experience with plugin-based architectures and integrating DevOps tools Proven ability to build data-driven user interfaces Hands-on experience with AWS (Azure a plus), Kubernetes, and cloud-native technologies Strong experience with CI/CD pipelines and Infrastructure as Code (Terraform, CloudFormation) Experience with observability platforms (e.g., Splunk or equivalent) Excellent communication and technical leadership skills Bachelor’s or Master’s degree in Computer Science, Engineering, or related field preferred Corporate Security Responsibility All activities involving access to Mastercard assets, information, and networks comes 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.
Vacancy posted 4 days ago
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