Charlie A. Johnson
CHARLIE·A·JOHNSON // FDE+CO-FOUNDER // LDN // ~
I build AI systems around how firms actually work, currently as co-founder of Tacit.
previously: volpi capital · kpmg · siemens · one very good shopify brand
002 // SYSTEMS
Things I've built that you can actually try.
MidMarketBench
Benchmarking frontier AI on private-market investment workflows.
Synthetic case packets, deterministic scoring and read-only APIs kept separate from provider runs, so model performance can be judged without blurring data, method or display.
private-marketsevaluationbenchmarkingnextjs
InvestorStack
Operating-stack intelligence for investment teams.
Maps tools by operating signal, then turns a firm's current profile into deterministic recommendations on fit, gaps and integration readiness.
stack-auditprivate-equityai-readinessrecommendations
DealState
A source-backed deal-state workspace for investment teams.
Treats a deal as maintained state rather than a pile of summaries: facts, conflicts, review points and next actions in one reviewable place.
deal-stateevidencediligenceworkflow-state
PE Labs
Applied AI workflows for private equity.
Company intelligence, transparent screening and relationship drafting over a synthetic company universe. A working lab, not a product.
private-equityworkflow-prototypesevaluationstructured-output
Geometric structure in neuroimaging
MSc research at the University of Birmingham, 2025–2026.
Testing whether geometric structure can reveal relationships between neural signals that standard statistical measures miss. Supervised by Dr Felipe Orihuela-Espina. In progress.
neuroimagingpythongeometrytopology
003 // RECORD
004 // PERSON
I live in London. I like systems that leave a trace, markets, water in most forms, and building things properly.
The fastest way to find out what I'm like is to email me.