Software Engineer II

Our Purpose

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.

Title and Summary

Software Engineer II

Who is Mastercard? Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.

The Core Authentication team is responsible for MasterCard’s safety and security related product development efforts to protect the integrity of the electronic payment system as well as ensure payments are convenient yet secure. The products are primarily focused on Cyber Security, authentication, fraud prevention, risk mitigation and dispute resolution across all payment channels as well as all stakeholders - issuers, acquirers, merchants, processors, and consumers. The key objectives of the solutions are to prove identity, reduce abandonments, reduce fraud, increase approval rates, and secure the payments ecosystem.

Mastercard software engineering teams leverage Agile development principles, advanced development and design practices, and an obsession over security, reliability, and performance to deliver solutions that delight our customers.

We are looking for a Performance Engineer for Service Reliability Engineering and automation with a focus on ensuring system performance, scalability, monitoring, logging, and alerting to provide end-to-end observability, reliability, and efficiency.

Key Responsibilities:
- System Performance Monitoring: Continuously monitor and analyze system performance metrics (CPU, memory, disk I/O, etc.) and identify performance bottlenecks. Use monitoring tools (e.g., Splunk, Dynatrace, Prometheus, Grafana, Datadog) to maintain optimal system performance.
- Capacity Planning: Understand and participate in capacity planning to ensure that infrastructure can handle expected growth and avoid performance degradation.
- Incident Response: Act as a key contributor in diagnosing and resolving performance-related incidents, conducting post-incident analysis to prevent recurrence.
- Performance Tuning: Fine-tune application performance through code optimization, database tuning, and network optimization.
- Automation and Scripting: Develop component performance testing scripts and work with engineering team to effectively perform the unit performance testing. Write and maintain scripts or automation tools to improve the efficiency of performance monitoring and troubleshooting.
- Load and Stress Testing: Design and execute load and stress tests to validate system performance under high load, and work with development teams to address issues discovered during testing.
- Collaboration with DevOps/Development Teams: Collaborate with cross-functional teams (development, DevOps, operations) to ensure performance considerations are factored into the design and development of applications. Work closely with DevOps to balance performance improvements with cost optimizations, particularly in cloud environments. Effectively communicate performance insights, issues, and improvements to both technical and non-technical stakeholders.

Required Skills:
- Performance Tools: Proficiency with performance monitoring, load testing, and profiling tools (e.g. JMeter, BlazeMeter, Dynatrace).
- Scripting/Programming and technologies: Experience with scripting languages (e.g. Python, Bash) to automate tasks related to performance monitoring and tuning. Good understanding of Java and multi-threading, garbage collection, profiling. Knowledge of Redis performance tuning. Knowledge in Data science and modeling, machine learning, forecasting future traffic patterns based on history.
- Cloud Platforms: Experience working with on-premises and cloud infrastructure (PCF, AWS, or Azure) and ensuring cloud-native applications perform at scale.
- Linux Systems: Understanding of Linux system performance metrics and troubleshooting.
- Networking: Good knowledge of network protocols, latency, and throughput optimization.
- Cyber-Security: Good knowledge of security protocols, vulnerability scanning, Firewall, Phishing, DoS, DDoS, Ransomware, malware, session hijacking, XSS and other cyber security attack prevention techniques.

Nice-to-Have Skills:
- Containerization and Orchestration: Experience with containerized environments (Docker, Kubernetes) and understanding how they impact system performance.
- Database Optimization: Knowledge of database performance tuning (e.g., Oracle, PostgreSQL).
- Programming: R Programming language, knowledge in Spring and Gatling framework.

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.