Who you are

- Bachelor's degree in Computer Science, Information Technology, a related field, or equivalent practical experience

- Strong foundation in software engineering principles including system design, source control, testing, debugging, performance analysis, maintainability, and secure software development

- Expert-level proficiency with Java (17+) and Spring-based application development

- Experience designing and building RESTful APIs and service integrations

- Experience developing cloud-native applications and distributed systems, preferably in Azure environments

- Proficient with distributed source control systems (e.g., Git), including branching strategies, code review workflows, conflict resolution, and release management practices

- Experience working within contemporary CI/CD environments, including build automation, deployment pipelines, release validation, and operational support

- Demonstrated ability to investigate and resolve complex production issues through structured troubleshooting, evidence-based decision-making, and root cause analysis

- Strong understanding of observability practices including logging, monitoring, metrics, dashboards, distributed tracing, and reliability-oriented alerting

- Experience with modern data platforms and databases, including data modeling, scalability, performance, and operational trade-offs

- Working knowledge of authentication, authorization, secrets management, vulnerability management, and secure handling of sensitive data in regulated environments

- Strong ownership mindset with a proven ability to take initiative, drive work to completion, remove blockers, and deliver results with limited supervision

- Ability to collaborate effectively across teams, influence technical decisions,



and communicate complex concepts to both technical and non-technical stakeholders

- Comfortable using approved AI-assisted development tools and applying critical judgment to validate AI-generated outputs before production use

- Committed to continuous learning, engineering excellence, and helping others grow.

Preferred Qualifications

- Experience in payments, fintech, commerce, banking, fraud prevention, or other regulated industries

- Experience building high-throughput, highly available, or event-driven systems

- Experience with batch processing, workflow orchestration, or large-scale data pipelines

- Experience incorporating AI-enabled capabilities into products or engineering workflows

What the job involves

- We are looking for a Senior Software Engineer who thrives on solving complex technical problems, takes ownership of outcomes, and enjoys building production-grade software that operates at scale

- This role is ideal for an engineer who can independently drive initiatives, influence technical decisions, mentor others, and contribute to a culture of engineering excellence

- Mastercard powers an inclusive digital economy by making transactions safe, simple, smart, and accessible

- Through secure technology, trusted partnerships, and continuous innovation, we help individuals, businesses, and governments realize their greatest potential

- Design, develop, test, deploy,



and maintain high-quality software solutions that meet Mastercard standards for security, reliability, scalability, and operational excellence

- Independently drive technical initiatives from concept through production, navigating ambiguity, managing dependencies, and delivering measurable business outcomes

- Collaborate with product, engineering, operations, security, and compliance partners to translate business needs into well-designed technical solutions

- Contribute to architecture and design decisions for distributed systems, APIs, integrations, and platform capabilities, balancing business priorities with long-term maintainability

- Own software services throughout their lifecycle, including implementation, deployment, monitoring, incident response, and continuous improvement

- Troubleshoot complex application and production issues using logs, metrics, traces, debugging tools, and systematic root cause analysis techniques

- Participate in on-call support, incident reviews, and operational readiness activities while driving improvements that enhance reliability and reduce operational toil

- Apply secure-by-design and privacy-conscious engineering practices when working with sensitive financial and consumer data

- Foster engineering excellence through code reviews, technical mentoring, knowledge sharing, and promotion of development best practices

- Continuously improve automation, testing, observability, developer experience, and software delivery processes

- Use approved AI-assisted engineering tools responsibly to improve productivity while applying sound engineering judgment, rigorous validation, and strong protection of confidential or sensitive information

📌 Senior Software Engineer (Toronto)
🏢 Mastercard
📍 Toronto