Senior Performance Test Engineer

r 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.

Overview
Good opportunity for a solid performance tuning and Linux administrator to join a great team and have a direct impact on critical Mastercard services. You'll play a meaningful role in performance analysis, tuning, troubleshooting and recommendations for optimizations of critical services running on Linux either as VMs or Containers
Essential Skills
• This job independently executes key elements of projects/processes within the Software Engineering area by applying in-depth knowledge of their discipline and area best practices to effectively resolve problems and roadblocks as they occur.
• Contributes to the development and maintenance of high-quality, scalable software solutions, supporting security and operational resilience with guidance.
• Participates in code reviews, providing feedback to help uphold quality standards and best practices.
• Assists in designing, developing, and delivering software solutions that align with business needs and organizational standards, with oversight.
• Creates and maintains technical artifacts, such as requirements documents, design specifications, and test plans, supporting project documentation efforts.
• Supports system maintenance activities, including incident management, root cause analysis, and problem resolution in production environments, with supervision.
• Assists in evaluating emerging technologies and frameworks, supporting Proof of Concept (PoC) efforts and solution assessments.
• Contributes to solution and technology roadmaps, providing input to support strategic planning and innovation initiatives.
• May contribute to solution development for new products/services and/or manage smaller project/initiatives as an experienced individual contributor with specialized knowledge within the Software Engineering area.

Responsibilities:
• Design and execute load, stress, spike, endurance, and volume tests
• Analyse throughput, latency, response time, concurrency, and TPS metrics
• Perform capacity planning and scalability validation
• Identify system bottlenecks across CPU, memory, I/O, DB, and network layers
• Establish performance baselines and conduct trend analysis
• Validate SLA/SLO compliance and performance thresholds
• Apply APM concepts (transactions, traces, metrics, logs)
• Hands-on with JMeter, LoadRunner/Performance Center, BlazeMeter, Gatling, k6
• Experience testing HTTP/HTTPS, REST APIs, WebSockets, messaging systems (Kafka, RabbitMQ)
• Exposure to gRPC-based performance testing (good to have)
• Develop test scripts using Java, JavaScript (k6), and Groovy (JMeter)
• Integrate performance tests into CI/CD pipelines (Jenkins, Azure DevOps)
• Automate test execution and reporting workflows
• Use tools like Dynatrace, AppDynamics, New Relic, Prometheus + Grafana, ELK stack
• Analyze application, infrastructure, and database metrics holistically
• Perform root cause analysis using monitoring dashboards
• Strong SQL proficiency (query tuning, joins, indexing)
• Understand DB performance (locks, slow queries)
• Experience with caching systems (Redis, Memcached)
• Conduct API-level performance validation
• Strong Linux expertise (commands, logs, CPU/memory analysis)
• Basic Windows server understanding
• Knowledge of networking (DNS, load balancers, CDN, TCP/IP, latency factors)
• Familiarity with Docker and Kubernetes (good to have)
• Programming / Dev Skills- Java / Python for custom tooling

Qualifications:
• Bachelors or master's degree in mathematics, computer Science or Information Technology or equivalent combination of education and job-related experience.
• Around 8+ years of experience in the software industry with 5+ years experience in relevant skills
• Excellent organizational skills, along with the ability to remain focused on completing tasks and meeting goals

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.