Epsilon is seeking a Senior Software Engineer for the Core Platform Engineering team to design and maintain high-performance, low-latency advertising services. Responsibilities include collaborating with cross-functional teams, optimizing system performance, contributing to frontend integrations, partnering with data engineering on event tracking and analytics, championing code quality and CI/CD, delivering scalable ad delivery enhancements, and improving system observability. Requirements include a Bachelor's degree or equivalent, 6+ years backend/full stack development experience, strong Java expertise, experience with streaming platforms (Kafka, Kinesis, Pulsar), proficiency in SQL and NoSQL, knowledge of low-latency architectures, and SPA development with TypeScript and frameworks like Angular or React. Preferred qualifications include a Master's degree or 10+ years experience, ad tech experience, cloud-native environment familiarity (AWS, Kubernetes, Docker), and experience with large-scale event tracking and data pipelines. Benefits include flexible time off, paid holidays, parental leave, health coverage, 401(k), tuition assistance, and more. Location: Chicago, Illinois, United States. Salary range: USD $88,900 - $165,100 annually.
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