Lead Software Engineer

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Lead Engineer role at Epsilon to design, deliver, and execute core capabilities for Epsilon Clean Room, a privacy-first data collaboration platform. Responsibilities include building large-scale cloud-native data platforms on AWS using REST APIs, microservices, and event-driven applications. Hands-on work with Node.js, TypeScript, JavaScript, Express.js, AWS services, and SQL/NoSQL databases. Collaborate with engineering, product, architecture, and business teams. Own full software development lifecycle and lead technical initiatives on performance, scalability, security, and cost efficiency. Mentor junior engineers. Requires Bachelor's degree in CS or related field, 8+ years software engineering experience, expertise in distributed systems, microservices, REST APIs, JavaScript/TypeScript ecosystem, event-driven architectures, messaging technologies, relational and NoSQL databases, cloud-native applications on AWS/Azure/GCP, Infrastructure as Code, CI/CD, and agent-assisted coding tools. Preferred qualifications include Master's degree, 10+ years experience, big data platforms, and Generative AI exposure. Benefits include flexible time off, paid holidays, parental leave, health coverage, 401(k), tuition assistance, and more. Location: New York, NY.