Lead AI Retrieval & Search Architecture (Remote)

Prosapient; Greater London; Remote; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Tenure gifts

Health insurance (Vitality)

Employee Assistance Programme

Enhanced parental pay

Annual leave 25 days + holidays

MyMindPal app

Corporate events

Job summary

proSapient is seeking a Search & AI Retrieval Lead to define how structured data, semantic understanding, and intelligent systems power discovery across our platform. You will shape the future of knowledge retrieval, from knowledge graphs to LLM-driven enrichment.

The role offers remote work and the opportunity to lead cross-functional teams while designing scalable cloud-native solutions on GCP and cutting-edge vector/search technologies.

Qualifications

• 5+ years building production search/retrieval systems.
• Experience designing search architectures, not just operating them.
• Experience with semantic search and embeddings-based retrieval.
• Experience leading mid-sized technical teams.
• Experience working with cloud-native systems (GCP).

Responsibilities

• Define the future search stack and architecture.
• Design Knowledge Graph and intelligent retrieval workflows.
• Architect retrieval pipelines on Google Cloud Platform (GCP).
• Build production-grade systems leveraging frontier LLMs (OpenAI, Gemini).

Skills

Python

Semantic search

LLM pipelines

GCP

Leadership

Search architecture

Cloud-native

Embeddings

Tools

OpenAI API

Gemini

BigQuery

Job description

proSapient is seeking a Search & AI Retrieval Lead to define how structured data, semantic understanding, and intelligent systems power discovery across our platform. You will shape the future of knowledge retrieval, from knowledge graphs to LLM-driven enrichment.

The role offers remote work and the opportunity to lead cross-functional teams while designing scalable cloud-native solutions on GCP and cutting-edge vector/search technologies.