Senior Software Engineer (Data)

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About this role

Senior Software Engineer (Data) Irvine, California, United States; Los Angeles, California, United States WHAT YOU'LL DO As a Senior Software Engineer on Viant's Data team, you will build and optimize the data systems that power our AI-driven DSP, enabling real-time decisioning and measurement across CTV and omnichannel advertising. You'll work with large-scale datasets and distributed systems in a multi-region cloud environment spanning GCP and AWS. This role is ideal for an engineer who enjoys solving complex data challenges, improving system performance, and contributing to scalable infrastructure. You'll collaborate closely with cross-functional teams while delivering reliable, efficient, and high-quality data solutions. THE DAY-TO-DAY - Design, develop, and deploy data pipelines and backend services in a cloud environment - Build and maintain ELT workflows using modern data processing tools and frameworks - Optimize ETL processes and queries for performance, scalability, and cost efficiency - Troubleshoot data and system issues in production environments - Collaborate with product, engineering, and operations teams to deliver features and improvements - Contribute to system design discussions and implement scalable solutions - Ensure data quality by identifying inconsistencies and resolving issues - Support ongoing improvements to system reliability, performance, and maintainability GREAT TO HAVE - 5+ years of experience in software engineering, with a focus on data systems or backend development - Proficiency in one or more programming languages such as Python, Java, or Go - Experience with GCP (including BigQuery) or other cloud data platforms - Strong SQL skills and experience working with large-scale datasets - Familiarity

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