EMR/Spark SQL & Job Query-Tuning Engineer

Amazons RFM team is seeking an engineer to optimize DRAM usage across EMR on EC2 clusters through cluster tuning, Spark/YARN optimization, and EC2 instance right-sizing. The role involves analyzing utilization, identifying over-provisioned resources, running optimization experiments, and delivering measurable memory/cost savings without impacting performance or SLAs.Key Responsibilities Analyze EMR, Spark, YARN, and CloudWatch metrics to identify memory waste, underutilized executors, and ineffi

CTG is seeking to fill a Data Engineer (Microsoft Fabric, Spark/PySpark) position for our client. Join a dynamic data engineering team responsible for designing and delivering modern lakehouse solutions that support enterprise analytics and data-driven decision-making. This role focuses on building scalable data pipelines, implementing Microsoft Fabric lakehouse architectures, and developing Spark/PySpark solutions that integrate data from multiple enterprise systems. Candidates with Databricks

Join the MongoDB Server Query Optimization team, and help us build a world-class distributed open-source query optimizer. Our team plays a crucial role in the experience and performance of data processing. We are responsible for the MongoDB Query Language and the lifecycle of each query, through parsing, optimization and plan selection. We have a presence across the US and Europe including New York, Dublin, Seattle, Palo Alto, and Chicago. We support office-based and remote work and align proje

We are seeking a Senior Software Data Engineer to join our team in a software engineering capacity. This is not a data-science or analytics position centered on ad-hoc data exploration; instead, the role focuses on building software, data processing jobs, and data pipelines consumed by internal and external partners. Data is our main product and first-class citizen, and we value correct, high-quality data as much as clean and maintainable code. Responsibilities Write new data pipelines and jobs