Senior AI/ML Engineer
Core
Build and operate ranking, recommendation, and search systems (including multi-modal image and conversational search) for a global diamond and gemstone marketplace.
Role type
Senior IC machine-learning engineer (search & ranking)
Builds
Production search infrastructure, ranking engines, and multi-modal AI features for a global B2B marketplace
Domain
E-commerce / Marketplace / Jewelry industry
Deliverable
production ML models
Required skills
Information retrieval infrastructure, Applied ML for ranking and recommendations, NLP and LLM application, Low-latency model serving, Search and ranking evaluation, Foundation model engineering, Probabilistic system design, AI coding agents
Preferred skills
Computer vision fundamentals, Multi-tenant system design, Conversational search products, Marketplace search experience
Technologies
OpenSearch, Elasticsearch, Vespa, PostgreSQL, Snowflake, TypeScript, Node.js, GraphQL, AWS (EMR, Glue, Kubernetes), Grafana
Responsibilities
Build and operate real search infrastructure to power ranking and multi-modal search; Design multi-tenant, configurable ranking and recommendation systems; Build and improve Contextual Search and conversational assistant using LLMs; Build image-to-attribute and image-to-product-match pipelines; Define and run search-specific evaluation experiments; Own the full lifecycle of ranking and recommendation models; Design and optimize low-latency, real-time model-serving systems
Seniority
Senior, hands-on IC
