Lead Software Engineer

Mastercard · O'Fallon, Missouri

onsitefull-time6-10 years

posted 22h

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 Lead Software Engineer Overview Mastercard is seeking a Lead Software Engineer to serve as a technical leader and subject matter expert responsible for designing, developing, and maintaining secure, scalable, and reliable software solutions that support the evolution of Mastercard's payment platforms. This role drives software engineering excellence by leading architecture and design activities, promoting modern engineering practices, mentoring team members, and ensuring high-quality delivery across the software development lifecycle. The Lead Software Engineer will partner across engineering teams to advance platform modernization, cloud-native adoption, event-driven architectures, and AI-enabled engineering capabilities. The ideal candidate applies deep technical expertise to solve complex engineering challenges, influence architectural and technology decisions, and contribute to the continuous improvement of products, services, and engineering processes. What You Will Do Software Design & Architecture -Lead the design and architecture of scalable, maintainable, and secure software solutions that support business and technology objectives. -Define architectural patterns, standards, and technical approaches that promote performance, reliability, and long-term maintainability. -Evaluate complex requirements and translate them into effective technical designs and implementation strategies. -Conduct design and architecture reviews to ensure alignment with organizational standards and engineering best practices. Software Development & Engineering Excellence -Design, develop, test, and maintain high-quality software solutions across the full software development lifecycle. -Drive adoption of modern engineering practices that improve software quality, delivery velocity, and operational effectiveness. -Contribute to the creation of technical documentation, design specifications, deployment strategies, and other engineering artifacts. -Evaluate emerging technologies and recommend solutions that improve products, services, or engineering efficiency. Testing & Quality Engineering -Establish and promote standards for unit, functional, and integration testing. -Ensure software solutions are thoroughly validated through effective testing strategies that support quality, reliability, and maintainability. -Drive continuous improvement of quality engineering practices throughout development and deployment processes. Performance & Reliability Engineering -Analyze, design, and optimize software systems to meet performance, scalability, and reliability requirements. -Lead performance testing, monitoring, capacity planning, and tuning initiatives. -Identify and resolve bottlenecks to ensure solutions operate efficiently under varying workloads. Secure Software Engineering -Apply and champion secure coding practices throughout the software development lifecycle. -Ensure software solutions adhere to security standards and protect against vulnerabilities and emerging threats. -Partner with stakeholders to identify and remediate security risks while maintaining compliance with organizational standards. Operational Excellence & Troubleshooting -Design solutions with observability, maintainability, and operational readiness in mind. -Support production environments through monitoring, incident management, problem resolution, and root cause analysis. -Lead troubleshooting efforts for complex technical issues across applications and