Senior GenAI Engineer — RAG (Full-Stack)

Title                                 : Senior GenAI Engineer — RAG (Full-Stack)Experience                    : 5+ yearsLocation                         : RemoteWork type                      : Chennai - Work from Office/ Remote – Other locationsEmployment Type      : Full Time Notice Period               : ImmediateWork Day                       :Mon to Fri Key Responsibilities:RAG pipeline end to end: ingestion integration, hybrid retrieval with reranking, prompt/context strategy, citation resolution, refusal behaviorPermission-aware retrieval: source ACL mapping (SharePoint/Entra, Confluence) to fail-closed retrieval filters; zero-leakage test suite partnership with QAVector database design and operations (Milvus or pgvector): schema, metadata filters, sync, performanceFull-stack product build: React/TypeScript chat and citation experience, Python/FastAPI services, REST APIs, SSO/OIDC integration, admin configuration UIEvaluation-driven development: retrieval precision, faithfulness, and citation-accuracy metrics as the daily working loop; A/B testing of retrieval and prompt variantsLatency engineering to the 3–5s first-token / ~15s complete-answer targets at concurrencyTechnical Skills:5+ years software engineering with 2+ years building RAG/LLM applications in production — with real users and real quality metrics, not notebooksDeep retrieval craft: chunking strategy, embeddings, hybrid search, rerankers; you can explain why retrieval fails and how you measured the fixGenuine full-stack evidence: shipped React/TypeScript front ends AND Python back-end services in production; API design; OIDC/SAML integrationVector database production experience (Milvus, pgvector, Weaviate, or equivalent) including permission/metadata filteringEvaluation fluency: has built or operated a retrieval/answer quality harness with numeric thresholdsStrongly Preferred:Permission-aware/multi-tenant retrieval specifically; Microsoft Graph API; NIM/OpenAI-compatible serving endpoints; streaming UX; enterprise design systems; banking content domains About Ampera: Ampera Technologies, a purpose driven Digital IT Services with primary focus on supporting our client with their Data, AI / ML, Accessibility and other Digital IT needs. We also ensure that equal opportunities are provided to Persons with Disabilities Talent. Ampera Technologies has its Global Headquarters in Chicago, USA and its Global Delivery Center is based out of Chennai, India. We are actively expanding our Tech Delivery team in Chennai and across India. We offer exciting benefits for our teams, such as 1) Hybrid and Remote work options available, 2) Opportunity to work directly with our Global Enterprise Clients, 3) Opportunity to learn and implement evolving Technologies, 4) Comprehensive healthcare, and 5) Conducive environment for Persons with Disability Talent meeting Physical and Digital Accessibility standards