David Campbell
Performance Engineering Practitioner & Author
25 years building, fixing, and modernising performance engineering capability. Now teaching what I've learned — and building AI agents to do the parts that shouldn't need a human.
25 years of performance engineering across government, finance, and enterprise. Trained and certified by the people who built LoadRunner. Founded testing divisions, rescued failing programmes, and delivered across systems where failure makes the news. Now applying AI to the hardest parts of the discipline.
Performance Engineering
50+ enterprise engagements. Founded the Met Police performance testing division (7 years). Head of Non-Functional Testing at HM Passport Office. Delivered for DVLA, Ministry of Justice, Nationwide, Specsavers, and FiReControl.
LoadMagic: AI Test Automation
Built a multi-agent AI platform with 7+ specialised agents for JMeter and Locust. Self-healing correlation pipeline, automated quality gates, RAG across 5,000+ technical documents. Validated a 20x reduction in test preparation through time-motion study.
AI Analysis and Security
Designed a multi-step AI analysis platform for performance test results with anomaly detection and automated infrastructure discovery. Built an AI-driven security penetration probe for continuous automated vulnerability scanning. Both delivered under government security constraints.
Published Author
AI Performance Engineering: the first book on agentic performance testing. Time-motion study, self-healing architecture, the autonomy story, and a blueprint for building an AI testing pipeline.
Lineage
Trained by Starbase (UK's leading LoadRunner consultancy). Certified by Hewlett Packard. Worked directly for HP, IBM, SQS (Europe's largest QA consultancy), and Capgemini. BSc Business Management, King's College London.
Builder, Not Just Consultant
Saved £100k/year at HMPO with a containerised testing framework. Built AI-driven ETL validation. Reduced AWS costs by 90%. Resolved 181 defects in 9 months (response times from 11s to 0.13s). Every tool production-grade, not a prototype.
Why I built this
Performance testing tools haven't meaningfully changed in 15+ years. Here's why I decided to change that.
Want to talk?
Whether you want to assess your PE capability, explore AI-augmented testing, or just have a practitioner conversation about a challenge you're facing — I'm available.