Senior Integration Engineer
Mastercard1 day ago
Base Salary
$96k - $163k/yr
Responsibilities
- Design and maintain scalable automated testing frameworks for UI, API, and performance testing.
- Validate Spring and Spring Boot REST APIs for functional correctness, schema adherence, error handling, and edge cases.
- Use Postman and Insomnia for exploratory API testing and debugging, converting findings into automated coverage.
- Design and execute load, stress, and performance tests using JMeter and BlazeMeter.
- Define and track performance baselines for throughput, latency, and resource utilization.
- Integrate automation suites into CI/CD pipelines and enable parallel test execution across shared environments.
- Contribute to test strategy, coverage planning, risk assessment, and high-quality defect reporting.
- Lead improvements to test frameworks, processes, and engineering standards while mentoring QA and delivery teams.
Requirements
- 6+ years of experience in automation-focused QA or SDET roles.
- Strong hands-on expertise with Java-based automation frameworks.
- Deep experience with Selenium, REST Assured, Cucumber, and Cypress.
- Strong understanding of Spring and Spring Boot microservices architectures and RESTful APIs in distributed systems.
- Hands-on experience with JMeter and BlazeMeter for performance testing.
- Solid understanding of CI/CD pipelines and automated test execution.
- Experience designing or evolving automation frameworks beyond test case development is preferred.
- Familiarity with Page Object Model, abstraction layers, and BDD best practices is preferred.
- Experience supporting high-scale mission-critical systems with strict SLAs is preferred.
- Experience with Agile/Scrum delivery models, containerized or cloud-based testing environments, Jira, or ALM is preferred.
- Domain experience in billing, financial systems, payments, or card services is preferred.
- Experience testing data pipelines, ETL processes, or streaming systems is preferred.
Benefits
- Full-time employees generally receive medical, prescription drug, dental, vision, disability, and life insurance.
- Benefits generally include flexible spending and health savings accounts, paid leaves, paid sick and safe time, vacation, personal days, and U.S. observed holidays.
- Benefits generally include a 401(k) with company match, deferred compensation for eligible roles, fitness reimbursement or on-site fitness facilities, and tuition reimbursement.
- The position is listed in O'Fallon, Missouri, and Mastercard intends to fill it by 12/29/2026.
About Mastercard
Mastercard builds and operates a global payments network used by banks, merchants, fintechs, and governments, offering card processing, real-time payments, tokenization, and fraud/risk services. It generates revenue from transaction processing and assessment/service fees across more than 200 countries and territories. Founded in 1966 and headquartered in Purchase, New York, Mastercard is a public company listed on the NYSE (ticker: MA).