Hanoi, Vietnam
Published on: September 23, 2026
Yêu cầu
Từ 5 năm kinh nghiệm Java Backend, trong đó có kinh nghiệm thực tế với Elasticsearch;
Có kinh nghiệm hands-on với Elasticsearch 8.x, đặc biệt về Index, Mapping, Analyzer và Query DSL;
Hiểu và có kinh nghiệm thực tế về Semantic Search, Vector Search và Hybrid Search.
Có kinh nghiệm với Search Relevance, Ranking/Reranking và Performance Optimization;
Có kinh nghiệm Geospatial/Location Search là lợi thế;
Có kinh nghiệm với hệ thống E-commerce/Search quy mô lớn là lợi thế;
Có khả năng làm việc onsite, phối hợp trực tiếp với team và chủ động xử lý technical problems;
Có khả năng đọc hiểu hệ thống hiện tại, đưa ra giải pháp và trực tiếp implement, không chỉ tư vấn.
Requirements:
5+ years of Java Backend experience, including practical experience with Elasticsearch;
Hands-on experience with Elasticsearch 8.x, especially with Indexing, Mapping, Analyzer, and Query DSL;
Understanding and practical experience with Semantic Search, Vector Search, and Hybrid Search;
Experience with Search Relevance, Ranking/Reranking, and Performance Optimization;
Experience with Geospatial/Location Search is an advantage;
Experience with large-scale E-commerce/Search systems is an advantage;
Ability to work on-site, collaborate directly with the team, and proactively handle technical problems;
Ability to understand existing systems, propose solutions, and directly implement them, not just provide advice.
As part of our hiring process, this role may use Keystone AI’s artificial intelligence or automated tools to assist with reviewing and screening applications. These tools support, but do not replace, human judgment in making hiring decisions.
Your application will be considered complete only after you have completed the full registration process on the Keystone AI platform, including creating your profile, uploading your CV, and submitting your application. The AI interview is optional but encouraged and is not required for your application to be considered.
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CGP Group is an affirmative equal-opportunity employer and recruitment firm. We evaluate qualified applicants without regard to race, color, religion, creed, gender, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. Information provided in this advertisement is for recruitment purposes only.