01Portfolio · RAG & enterprise search
Production RAG is most of my working week: pipelines, hybrid retrieval, grounded citations, and the hardening that keeps a live system safe. These are real contracts, figures as recorded on Upwork.
01Delivered work
Client names withheld under contract — every figure is as recorded on the Upwork profile.
The flagship: a live retrieval system for one client across two contracts and a year of continuous work. Rebuilt ingestion around structure-aware chunking, moved retrieval to hybrid vector + BM25 with reranking, added a citation contract — then hardened the live system against prompt injection and data leakage once real users arrived.
Senior RAG engineering on a legal search product: built a legal taxonomy over the corpus and pushed answer accuracy to a bar where results could be relied on in practice — with documentation the client called out by name.
“Excellent work, communication and documentation. They delivered a working product exactly as I asked for — an A+ experience all-around. I will be hiring Wahab again.”
A short-term senior engagement embedding LLM features into a client's product — prompt architecture, retrieval wiring and delivery support through launch.
“Wahab has been extremely easy to work with, and very professional. His expertise has been invaluable in helping us to deliver this project.”
02Systems of this class
Well-known products of the same class — unaffiliated reference points, so a first conversation starts from a shape you already know.
Send the problem and where it's stuck. I'll tell you honestly whether I'm the right person and what it would take — usually within one business day.