Oliver Searle-Barnes

Built and shipped a fleet of LLM agents that discover, evaluate, and contact affiliate partners on behalf of growth teams. MVP live in three weeks; validated strong demand.

• • Architected the full-stack Next.js application.

• • Designed the discovery engine matching brands to affiliates: scraping pipeline feeding multi-stage LLM evaluation.

• • Built a custom chat stack supporting in-chat widgets and tool-calling UI.

• • Designed an agentic learning loop on LangGraph / LangChain with regression-test harness for prompts.

• • Integrated Stripe subscriptions and the Everflow affiliate network API.

Led engineering on a high-performance affiliate platform built on Next.js, Postgres and Redis.

• • Owned the platform architecture across click capture, attribution, and reliable postback delivery to partner endpoints.

• • Built dashboards on Next.js / React for both Brands and Affiliates.

• • Tuned Postgres + Redis for the high-volume click-stream workload.

• • Ran the customer-discovery sprint that surfaced the underlying gap and proposed AI-powered affiliate recruitment as the response, spun out as XP Flow.

Joined the API team at this health & beauty unicorn, shipping cross-cutting platform infrastructure consumed by both the React/TypeScript web app and external developers.

• • Built the third-party App Store and developer portal.

• • Shipped the platform-wide GraphQL rate limiter (leaky bucket, per-app quotas).

• • Designed the cross-service API authorization model.

• • Led platform-wide HIPAA compliance (audit logging, encryption, field masking).

• • Rebuilt webhook delivery with reliable retries and idempotency.

• • Introduced OpenTelemetry APM across the platform.