Senior Software Engineer

• Design, build, and maintain Solr-based search platforms
• Optimize search relevancy, ranking, and query performance
• Build and manage indexing pipelines for large datasets
• Deploy and operate services in AWS
• Collaborate with cross-functional teams on search and recommendation features
• Explore and implement ML-driven enhancements for search
• Define and implement hybrid search strategies combining keyword and vector-based retrieval
• Build and operate vector search pipelines within Solr/Lucene
• Measure and improve search relevance using evaluation metrics and experimentation
• Maintain Solr in production (SolrCloud), including collections, sharding, replication, and scaling
• Establish monitoring, SLOs, runbooks, and participate in incident response and root cause analysis

• Strong experience with Apache Solr and backend development (Java or similar)
• Experience working with AWS
• Solid understanding of search architecture, indexing, and performance optimization
• Experience designing and tuning search relevance strategies
• Hands-on experience with SolrCloud in production environments
• Familiarity with vector search and modern retrieval techniques

Nice to have

• Experience with machine learning in search or recommendation systems
• Familiarity with Elasticsearch or OpenSearch
• Experience with distributed systems and large-scale data processing
• Exposure to embedding-based retrieval and approximate nearest neighbor (ANN) algorithms
• Experience with re-ranking or learning-to-rank approaches

EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our clients, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.Engineer the Future with a Career at EPAM (https://www.youtube.com/embed/NU_mnNITn2o?si=IiCxyQ4sr1YJWxDG), EPAM will not provide new H-1B visa sponsorship for this position. Candidates with existing transferable H-1B status may be considered. EPAM Systems, Inc. is an equal opportunity employer. We recognize the value of diversity and inclusion in creating success for our customers, business partners, shareholders, employees and communities. We are committed to recruiting, hiring, developing and promoting employees without discrimination. As a global employer, this commitment includes complying with all laws in the countries in which we operate. Nevertheless, we believe equal employment practices should not be limited to what the law requires. Equal opportunity and inclusion are essential to motivate, empower and recognize the best in everyone. At EPAM, employment actions are based on individual qualifications, without regard to race, color, religion, creed, gender, pregnancy status, sexual orientation, gender identity, gender expression, marital or familial status, national origin, ancestry, genetics, age, disability status, veteran status, citizenship status when otherwise legally able to work, or any other characteristic protected by law.