Role: : IT - P3 Senior Programmer / Engineer Location: St Louis MO may be remote would be okay Exp: 10+ Years *Mandatory Skills:* * 8+ years of hands-on in search relevance, Search Query Optimization and software engineering experience for eCommerce websites * Proven experience with at least one major search engine preferably Elasticsearch( or any Lucene based search engine such as Solr or OpenSearch) * Experience in Lexical search using algorithms like BM25, Semantic Search ** * Deep understa