Christopher BisignaniSF BAY AREA

Now taking new engagementsTaking new engagements

Christopher
Bisignani

I turn messy human knowledge into systems that empower experts.

FORMAL ONTOLOGY/KNOWLEDGE REPRESENTATION · FULL-STACK PRODUCT ENGINEERING · TEAM LEADERSHIP & CULTURE

FORMAL ONTOLOGY/KR · FULL-STACK ENGINEERING · LEADERSHIP & CULTURE

Email ChristopherSchedule a call ↗Download CV ↓
  • 20 yrs
    ENGINEERING & LEADERSHIP
    ENGINEERING
  • 9 yrs
    GOOGLE KNOWLEDGE GRAPH
    GOOGLE KG
  • 1.6T facts
    SCALE OF GOOGLE KG (PUBLIC EST.)
    GOOGLE KG (PUB. EST.)
  • 2
    U.S. PATENTS
    U.S. PATENTS

01 · SERVICES

CONTRACTING

Full-stack product engineering

Web apps with a UI/UX and data-model focus.

Web apps · UI/UX · data models

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I thrive in ambiguity. I've worked at companies from one person to hundreds of thousands, at every stage from napkin sketch to hardened deployment at scale, and have worn many hats: engineer, CTO, team lead, product manager. I work fast and iteratively, focused on results.

Hire me to:

0 → 1turn your idea into a well-engineered, fully-deployed reality.
OUTSTANDING PROBLEManalyze an existing system and make deep structural improvements.
LEADERSHIPhelp your team optimize their use of AI technologies and develop stronger technical culture.
UI/UXevolve your web or mobile interface into something brilliant and bug-free.
UI/UXDATA MODELING0 → 1 & SCALE

CONSULTING

Ontology & data-model advising

Modeling complex domains, with your team.

Modeling complex domains, with your team

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Every product team faces the same hard problem: a precise, flexible model of its domain. My work has centered on one question: how should we model complex domains? It takes several forms:

TECHNICALHow to build the data model?
ONTOLOGICALWhat is the data model?
TEAMHow does the team think about the data model?

If that's the work in front of you, let's talk.

FORMAL ONTOLOGYKNOWLEDGE GRAPHSDOMAIN MODELING

CONSULTING

Team Leadership & Technical Organization

Practices, culture, and AI adoption for teams of 5–50.

Practices, culture & AI adoption

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At Google I led teams up to 12 engineers and worked across organizations of hundreds, not as a manager but as a technical lead setting the practices, culture, and architecture that let my teammates move fast.

I can help evolve your team or organization:

AGENTIC ENGINEERINGBring discipline and best practices to your team: I have worked at the edge of agentic engineering for over a year.
BEST PRACTICESClear your technical debt backlog with quantitative methods from developer-productivity research.
CULTUREI grew an ~800-member employee community at Google and won multiple awards for it. Let's make your culture healthy and productive.
TECHNICAL LEADERSHIPAI BEST PRACTICESCULTURE

02 · ABOUT

As a staff-level IC engineer, CTO, founder, and technical lead, I have spent two decades focused on one question: how should we model complex domains? For nine years on Google's Knowledge Graph team I built the systems thousands of people use to operate a graph publicly estimated at over 1.6 trillion facts.

Before that I led the UI team at Addepar, where I co-invented two U.S. patents on generating interactive reports and tables from graph-structured data. I've been CTO of two startups, hired and led distributed teams, and shipped at every stage from napkin sketch to hardened deployment. I hold an MIT B.S. in Mathematics with Computer Science.

In my off hours, I live on and work to restore 100 acres of canyon land in Castro Valley, I play go and chess, and I jam on flute and guitar.

NOW
Founder & CTO, Braiding Futures ↗
BEFORE
Staff Engineer (L6), Google · Knowledge Graph
EDUCATION
MIT, B.S. Mathematics w/ CS
PATENTS
US 9,424,333 · US 10,565,298
BASE
San Francisco Bay Area

Staff-level IC engineer, CTO, founder, and technical lead. Nine years on Google's Knowledge Graph; two U.S. patents; MIT math with CS. Two decades modeling complex domains.

In my off hours, I live on and work to restore 100 acres of canyon land in Castro Valley, I play go and chess, and I jam on flute and guitar.

03 · WORK

Interactive artifacts, live in the page. Explore one in place, or open it for the detail and context.

SCHEMAPERSONWORKCONCEPTPLACEDATAAda Lovelace · born in → LondonAda Lovelace · authored → Note GAda Lovelace · poetical science → PoetryAda Lovelace · collaborated with → Charles BabbageNote G · describes → Analytical EngineNote G · presents → AlgorithmCharles Babbage · born in → LondonCharles Babbage · designed → Analytical EngineEdsger W. Dijkstra · born in → RotterdamEdsger W. Dijkstra · settled in → Austin, TexasEdsger W. Dijkstra · authored → The EWD notesEdsger W. Dijkstra · authored → A Discipline of ProgrammingEdsger W. Dijkstra · championed → Structured programmingEdsger W. Dijkstra · advanced → AlgorithmA Discipline of Programming · develops → Structured programmingStructured programming · a form of → SystematizationHaskell Curry · developed → Combinatory logicCurry–Howard correspondence · named for → Haskell CurryCurry–Howard correspondence · named for → William A. HowardCurry–Howard correspondence · proofs as programs → LogicCurrying · named for → Haskell CurryCurrying · rests on → Combinatory logicCombinatory logic · grounds → LogicNāgārjuna · lived in → South IndiaNāgārjuna · authored → MūlamadhyamakakārikāMūlamadhyamakakārikā · expounds → Dependent originationMūlamadhyamakakārikā · expounds → Śūnyatā (emptiness)Śūnyatā (emptiness) · read as → Dependent originationMūlamadhyamakakārikā · employs → CatuṣkoṭiMūlamadhyamakakārikā · speaks by negation → Negative theologyCatuṣkoṭi · a four-cornered scheme of → LogicMaimonides · born in → CórdobaMaimonides · settled in → Fustat (Cairo)Maimonides · authored → Mishneh TorahMaimonides · authored → Guide for the PerplexedGuide for the Perplexed · develops → Negative theologyMishneh Torah · exemplifies → SystematizationAudre Lorde · born in → New York CityAudre Lorde · wrote → PoetryAudre Lorde · authored → Sister OutsiderAudre Lorde · authored → ZamiSister Outsider · questions → SystematizationSister Outsider · speaks for → DifferenceAda LovelaceAudre LordeCharles BabbageEdsger W. DijkstraHaskell CurryMaimonidesNāgārjunaWilliam A. HowardA Discipline of ProgrammingAnalytical EngineGuide for the PerplexedMishneh TorahMūlamadhyamakakārikāNote GSister OutsiderThe EWD notesZamiAlgorithmCatuṣkoṭiCombinatory logicCurry–Howard correspondenceCurryingDependent originationDifferenceLogicNegative theologyPoetryStructured programmingŚūnyatā (emptiness)SystematizationAustin, TexasCórdobaFustat (Cairo)LondonNew York CityRotterdamSouth India
A·01VISUALIZATIONOPEN ↗

Graph neighborhood explorer

Traverse an entity's local subgraph; inspect facts, sources, and provenance in place.

A·02UI DEMOOPEN ↗

Dynamic report builder

Tables generated by traversing graph-structured data: a high-level visual representation of the patented idea.

A·03VISUALIZATIONOPEN ↗

Pipeline interpretability

Data in, transformations, knowledge graph out. And the humans who need to see inside.

04 · CONTACT

Let's talk.

Prefer to talk it through?Schedule a call ↗

Schedule a call ↗
© 2026 CHRISTOPHER BISIGNANI
© 2026 CHRISTOPHER BISIGNANI