# Katie Hemus — AI Infrastructure Engineer
https://sushiroll.io

## About
Katie Hemus is a Staff-level AI Platform & Infrastructure Engineer based in Manchester, UK. Formerly built the AI backbone for PortSwigger's flagship product (LLM Gateway, RAG pipelines, MCP servers). Currently AI Infrastructure Engineer at Civica. Open to Staff/Principal roles in AI Infrastructure / Platform Engineering.

## Key Information
- Role: AI Infrastructure Engineer, Platform Engineer
- Experience: 12+ years in platform & infrastructure
- Location: Manchester, UK (remote-first, flexible for London hybrid)
- Current: AI Infrastructure Engineer at Civica
- Status: Open to Staff/Principal opportunities

## Core Expertise
- AI Platform: LLM Gateways, RAG pipelines, MCP servers, agent orchestration
- Kubernetes: EKS, Helm, GitOps, multi-cluster architecture (3 production clusters)
- Infrastructure: Terraform, AWS, GCP, CI/CD pipelines
- Security: Supply chain security, multi-tenant isolation, sandboxed execution (5 years at PortSwigger)
- Models: LiteLLM, pgvector + PostgreSQL, Qdrant, Pinecone, HuggingFace models
- Observability: Prometheus, Grafana Loki
- Data Tooling: Nomic Atlas, Nomic Embed, pgvector + PostgreSQL, Obsidian
- Deployment: Vercel (rapid prototyping), Caddy + Let's Encrypt (production)

## Notable Projects
- jobs.sushiroll.io: Password-gated career ops dashboard — automated job scanning, CV generation, role scoring. Deployed on Vercel.
- sushiroll.tooling: Nomic-powered knowledge infrastructure with pgvector brain servers for agent memory consolidation
- OpenClaw: Production AI operations platform — multi-model LLM gateway, 87+ skill integrations, local voice pipeline (faster-whisper, Piper TTS)
- LLM Gateway: Central AI platform for a flagship security product serving both product and internal tools
- RAG System: Built semantic search over engineering docs pre-ChatGPT-3, before RAG was a category
- Scan Template Generation: AI-powered vulnerability scan creation, shipped in product
- micethateatcake: Autonomous Etsy shop — daily AI-designed digital products
- Tidbit Tails: Fully automated daily kids' YouTube channel (Sora-2 animations)

## Contact
- Email: katie@sushiroll.io
- GitHub: https://github.com/katie-hemus
- LinkedIn: https://linkedin.com/in/katiehemus