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HL

Resume

Haoyang Li

AI systems architect and full-stack engineer · London, UK · open to relocation worldwide

AI systems architect and full-stack engineer delivering enterprise AI products from discovery to production, combining LLM applications, SaaS architecture, integration and automation with customer-facing technical delivery.

Experience

May 2025 – Present

Lead AI & Data Integration Architect · Zenith AI / My Club Group

London, UK

  • Own enterprise AI delivery from customer discovery and architecture design through full-stack development, deployment and iteration with business stakeholders.
  • Independently designed and built GAIMS, a patent-pending, auditable AI decision layer for supplier allocation, processing 3,000+ purchase orders over eight months in production. Combines frontier LLMs, historical and risk data, brand-specific criteria and human-review feedback; implements tenant isolation and sensitive-data redaction.
  • Build tailored GAIMS demos for four UK sportswear groups; present architecture and business value to executives and IT teams during NDA-stage evaluations.
  • Deployed Voiceflow chat agents with 40K+ messages and 15K+ users; built Retell voice agents integrating Zoho CRM lead capture, call summaries, transcripts and intent-based sales routing.
  • Built 50+ n8n workflows integrating AI products with CRM and operational data, supporting order-status retrieval, sales-call booking and cross-system business processes.
  • Delivered Kit Funder, a client portal and Zenith AI's website; built full-stack customer workflows spanning authentication, payments, order tracking and CRM integration.

Oct 2024 – May 2025

AI Training Engineer · Outlier AI

Remote

  • Designed rubrics and adversarial prompts for frontier LLM post-training (RLHF); evaluated reasoning, code generation, instruction following and tool calling, surfacing systematic failure modes for model training teams.
  • Led a 15-person evaluation team; set quality benchmarks and calibrated reviewers against ground truth.

Jun 2023 – Aug 2023

Quantitative Researcher · Guolian Minsheng Securities Co., Ltd

Zhengzhou, China

  • Researched commodity futures trading strategies using Python, SQL and PCA-based factor analysis.

Entrepreneurial

May 2026 – Present

Technical Co-founder · Kelay AI

London, UK

  • Built a pilot-stage voice AI booking application for small businesses using Next.js, TypeScript and PostgreSQL; integrated Retell agent provisioning and English/Mandarin conversations within a multi-tenant architecture.
  • Implemented booking, rescheduling and cancellation tools, webhook signature verification and idempotent call storage; resolved caller-ID and model-latency issues through live-call testing.

Education

Sep 2023 – Sep 2024

MSc Applicable Mathematics

London School of Economics and Political Science

Algorithmic Techniques in Machine Learning · Algorithms and Data Structures · Optimization Methods

Sep 2020 – Jun 2023

BSc Mathematics & Statistics

King's College London

Computational Methods with Python · Statistical Modeling · Linear Algebra · Stochastic Calculus in Finance

Skills

Engineering
TypeScript, JavaScript, Python, SQL, React, Next.js, Node.js
AI & integration
LLM APIs, RAG, prompt engineering, tool calling, REST APIs, n8n, Zoho CRM, Retell AI, Voiceflow
Data & deployment
PostgreSQL/Neon, Supabase, Airtable, Railway, Vercel, Netlify, Cloudflare
Developer tools
Git/GitHub, Claude Code, Codex, Cursor, Base44

Languages

Mandarin (native) · English (proficient) · Spanish (proficient)