Etsy

Senior Software Engineer I, Machine Learning, Search Systems

Etsy
Apply
1 day ago
Dublin, IrelandSenior

Responsibilities

  • Design, build, maintain, and operate scalable search backend and retrieval infrastructure.
  • Unify lexical and approximate-nearest-neighbor retrieval systems across Etsy products.
  • Productionize retrieval and ranking models with ML modeling teams at scale.
  • Develop indexing, query execution, and ranking features that improve latency, throughput, resilience, and relevance.
  • Ensure reliable data pipelines, index health, and system performance while supporting live A/B experiments.
  • Collaborate with applied scientists, Data Platform, ML Enablement, Search, and product engineering teams.
  • Contribute to technical excellence through code reviews, design discussions, mentorship, and performance feedback.
  • Develop agentic workflows and use AI tools to improve individual and team velocity and developer experience.

Requirements

  • Experience building and shipping production machine-learning systems, ideally for real-time search, recommendation, or advertising systems.
  • Strong engineering and coding skills with proficiency in Python, Scala, Java, or equivalent languages.
  • Experience optimizing system performance, implementing caching strategies, and scaling high-throughput, low-latency services.
  • Ability to write reliable, well-tested, maintainable production code.
  • Hands-on experience with AI and agentic frameworks, including designing and building agentic workflows.
  • Familiarity with neural retrieval, semantic search, transformer-based models, and modern ranking techniques is preferred.
  • Strong communication, empathy, collaboration, and continuous-learning skills.

Benefits

  • Full-time role reporting to the Engineering Manager.
  • Eligible for an equity package and annual performance bonus.
  • Competitive benefits supporting employees and their families.
  • Hybrid work prioritized for candidates within commuting distance of Etsy’s Dublin office, with office attendance once or twice per week depending on proximity.
  • Remote candidates outside commuting distance may be considered case by case, with occasional travel to the office expected.

Tech Stack

Etsy

About Etsy

10,000+ employees

Etsy operates a global e-commerce marketplace for handmade, vintage, and craft-supply goods, connecting independent sellers with buyers worldwide. It earns revenue through listing and transaction fees, payments, shipping, and seller services such as advertising. Founded in 2005 and headquartered in Brooklyn, New York, Etsy is publicly traded on Nasdaq and also operates marketplaces like Depop and Reverb.

Contact me