Consultant - Semantic Engineer (Graph RAG - Knowledge Engineer)

About Us: Chryselys is a Pharma Analytics & Business consulting company that delivers data-driven insights leveraging AI-powered, cloud-native platforms to achieve high-impact transformations. We specialize in digital technologies and advanced data science techniques that provide strategic and operational insights. Who we are: People - Our team of industry veterans, advisors and senior strategists have diverse backgrounds and have worked at top tier companies. Quality - Our goal is to deliver the value of a big five consulting company without the big five cost. Technology - Our solutions are Business centric built on cloud native technologies. Skills & Expectations 5–9 years of software engineering experience , including hands-on experience building production knowledge graphs and applied NLP systems . Strong Python development skills, with experience building production APIs and services using Python and FastAPI . Strong expertise in entity and relation extraction, Named Entity Recognition (NER), entity resolution/matching and semantic normalization . Experience designing ontologies, taxonomies and graph schemas to represent complex business and domain relationships. Hands-on experience with Neo4j and/or Amazon Neptune , including Cypher/openCypher for graph querying and traversal. Practical experience building GraphRAG and graph + vector hybrid retrieval solutions for AI/GenAI applications. Experience designing and optimizing graphs at millions-of-nodes/edges scale , with focus on query performance, data quality and scalability. Strong understanding of building production data pipelines using AWS S3, ECS/EKS and Bedrock , with Docker, pytest, Git and CI/CD. Biomedical ontology experience with standards such as UMLS, MeSH, SNOMED, RxNorm, ICD-10, DrugBank and/or ChEMBL is highly preferred. Pharma, Life Sciences or Healthcare domain experience is preferred, particularly experience working with scientific, clinical or drug-related data. Expected to bring strong ownership across the lifecycle—from NLP extraction and graph construction through retrieval, GenAI integration, evaluation and production operations . How to Apply: Ready to make an impact? Apply now by clicking [here] or visit our careers page at https://chryselys.com/chryselys-career/ Please include your resume and a cover letter detailing why you’re the perfect fit for this role. Equal Employment Opportunity: Chryselys is proud to be an Equal Employment Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Connect with Us: Follow us for updates and more opportunities: https://www.linkedin.com/company/chryselys/mycompany/ Discover more about our team and culture: www.chryselys.com