Senior Software Engineer I, Machine Learning, Search Systems

Join Etsy's Search Systems team as a Senior Software Engineer, Machine Learning, to build and evolve the core infrastructure powering our global marketplace's search experience. You will play a key role in a next-generation infrastructure upgrade, focusing on unifying retrieval systems, simplifying architecture, and integrating advanced machine learning capabilities to enhance relevance and performance.

• Design, build, and maintain production ML systems, ideally in real-time search or recommendation systems
• Strong coding skills in Python, Scala, Java, or equivalent languages
• Experience with system performance optimization, caching, and scaling low-latency services
• Hands-on experience with AI and agentic frameworks
• Collaborate with applied scientists and ML teams to productionalize new models
• Familiarity with modern retrieval and ranking techniques is a plus