Senior Data Engineer

Job Summary We are seeking a highly skilled Senior Data Engineer with deep expertise in Testing, validating, Developing and supporting large-scale batch and real-time data platforms built on Apache Spark, Apache Kafka, and Apache Ni Fi. The ideal candidate will have a strong background in distributed systems, streaming architectures, event-driven platforms, and cloud-native data processing. The successful candidate will collaborate with cross-functional teams to design innovative solutions, enhance platform capabilities, and ensure operational excellence in production environments. Key Responsibilities Develop, test, validate and maintain, scalable batch and real-time data processing applications using Apache Spark, Kafka, and Ni Fi. Build validation suite for high-performance, fault-tolerant, and resilient distributed systems capable of handling large data volumes. Develop reusable frameworks, libraries, and shared platform components to accelerate engineering productivity. Translate business and technical requirements into scalable software solutions. Contribute to architecture discussions, technical designs, and engineering standards. Streaming & Data Platform Engineering Create and implement validation suite for Spark batch and streaming applications to process high-volume datasets efficiently. Validate and support Apache Ni Fi data ingestion, transformation, and routing workflows. Build reliable data pipelines supporting real-time and near-real-time processing requirements. Implement solutions for data replay, recovery, checkpoint management, and failure handling. Performance & Scalability Analyze system bottlenecks and optimize application performance, throughput, and resource utilization. Improve scalability, reliability, and availability of distributed applications. Develop and test solutions leveraging modern storage technologies including Apache Ozone, Ceph, and cloud-native storage platforms. Build deployment automation and operational tooling to improve platform reliability. Monitor production environments and proactively address operational concerns. Participate in troubleshooting, root-cause analysis, and incident resolution activities. Engineering Excellence Participate in code reviews and promote engineering best practices. Maintain high-quality documentation for systems, APIs, and platform components. Collaborate closely with Product, Architecture, Platform, and Dev Ops teams. Contribute to CI/CD processes and continuous improvement initiatives. Mentor junior engineers and foster a culture of technical excellence and innovation. Required Qualifications Bachelor's degree in Computer Science, Engineering, or related technical field. 6+ years of hands-on software deployment, validation, testing, development experience on large-scale data-intensive applications. Strong expertise in Apache Spark (Batch and Structured Streaming). Strong experience with Apache Kafka and event-driven architectures. Experience developing, testing and supporting Apache Ni Fi data flows. Proficiency in Scala, pyspark or Python. Strong SQL and data modeling skills. Experience working with distributed storage systems such as Apache Ozone, Ceph, HDFS, or cloud-based object stores. Hands-on experience with Linux, Git, shell scripting, and CI/CD pipelines. Strong analytical, problem-solving, and communication skills. Experience operating production-grade distributed systems in cloud or hybrid-cloud environments. Preferred Qualifications Experience building observability solutions using monitoring and logging platforms. Knowledge of data governance, metadata management, and data platform best practices. Experience with containerization and orchestration technologies (Docker, Kubernetes). Knowledge of performance engineering, resilience testing, and production readiness assessments. Experience building engineering automation frameworks and reusable validation platforms. Familiarity with observability tools, monitoring systems, and operational analytics. Experience in highly regulated, transaction-processing, or large-scale enterprise environments. 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. Everyone wants easier ways to pay; we invent them. Checkout lines are slow; we speed them along. Merchants want more sales; we give them data and insights. People need financial access; we connect them. Corporate purchasing is complicated; we make it simple. Commuters are busy; we speed them on their way. Governments need greater efficiencies; we help create them. Small businesses are virtual; we give them access to a world of buyers. Retailers want to fight fraud; we provide the tools.