Jeff Jonas is the founder and CEO of Senzing, where he is on a mission to democratize entity resolution and the identity intelligence it powers — trusted by the world’s largest banks, insurance companies, healthcare organizations, and government agencies, and the smallest nonprofits alike. He has spent 40 years architecting, designing, building, and deploying information systems that combine diverse data sources to deliver remarkably intelligent systems, and ushered identity and entity resolution into the mainstream in the early 1990s. National Geographic profiled him as the Wizard of Big Data. He was named an IBM Fellow, is the author or co-author of 14 patents, and holds an honorary Ph.D. in Science from Claremont Graduate University. He is also one of only a handful of people to have completed every Ironman triathlon on the global circuit – a pursuit that began after recovering from quadriplegia following a 1988 car accident.
Jeff Jonas
Founder, CEO & Chief Scientist | Senzing, Inc.
One Inventor
Six Generations of Entity Resolution
1984
Gen 1 – Debtor Matching
Founded Systems Research & Development (SRD). Built a paperless collection system for TransUnion with “debtor matching” – the genesis of modern entity resolution. Pioneering ‘entity-centric learning’ to overcome the limits of record-to-record matching.
1991
Gen 2 – NORA (Non-Obvious Relationship Awareness)
Relocated SRD to Las Vegas. Created Non-Obvious Relationship Awareness (NORA) for casino compliance and fraud detection – resolving 15M+ customers, 20K employees, and 18 watch lists in near real time. Pioneering ‘relationship awareness’ as a byproduct of entity resolution. His work also helped identify the MIT card-counting team as brought to life in the book “Bringing Down the House” and film “21.”
Mid-1990s
Gen 3 – Consolidated Consumer Database
Built a consolidated consumer database for Cendant – at the time the world’s largest consumer services company, spanning Days Inn, Ramada, Howard Johnson, Super 8, and Travelodge hotels, Century 21 and Coldwell Banker real estate, and Avis and Budget rental cars. Resolved 1B+ unmatched records across ~5,000 data sources into ~100 million unique profiles. Pioneering real-time big data entity resolution (before big data was even a word) and perfecting the concept of ‘every version of truth’ to advance accuracy and real-time learning. The result was a precision marketing capability unlike anything the industry had seen – identity intelligence applied not to fraud or compliance, but to understanding customer context at a scale no single brand’s data could achieve alone.
Late 1990s
Gen 4 – ERIK
Led SRD’s first commercial-off-the-shelf ER product. Pioneering a novel real-time learning concept called ‘sequence-neutrality’ – the ability to use new observations to reverse earlier assertions – eliminating accuracy drift and the mandatory data reloads it demanded.
It was during this era that Jonas and his team introduced the terms ‘entity resolution’ and ‘identity resolution’ – terminology that would become the industry standard.
2005
Gen 5 – IBM Identity Insight
IBM acquires SRD. Jonas named IBM Fellow and Chief Scientist of Context Computing. Pioneering ultra-large-scale ER, including a production deployment well beyond 100B input records – managing this entity resolved graph in real time. Notable deployments included MoneyGram, where fraud complaints dropped 72% – saving hundreds of millions in the first few years alone.
2009-2016
Gen 6 – IBM G2 Sensemaking
Led a $50M IBM skunkworks effort to build the first purpose-built real-time AI for entity resolution. Pioneering ‘principle-based ER’ – eliminating the training and fine-tuning contemporary ER requires. Landmark deployments included the Electronic Registration Information Center (ERIC), a nonpartisan nonprofit that resolved voter, DMV, and deceased-persons data to clean U.S. voter rolls – surfacing to date ~44M undetected address changes and ~670K deceased registrants. Another: Singapore’s Ministry of Defence, where G2 is powering their maritime domain awareness across the Strait of Malacca, through which a quarter of global trade and a third of the world’s seaborne oil transit. Fun fact: the ‘G’ in G2 stands for Genus – because compared to every other branch of ER, it’s a different species entirely.
August 2016
Senzing Is Born
Spun the G2 team and technology out of IBM to found Senzing. Went back into stealth to reduce industrial-strength ER to a simple software dev library (SDK) – to this day, an unprecedented feat – putting world-class ER within reach of any software developer. Even the smallest organizations now have access to the same ER capabilities as the most elite organizations on the planet.
2016-2025
Senzing in the Wild
A decade of leading continuous ER innovations: serverless architecture, dramatic reductions in cloud compute costs, and expanding global script support to include Chinese, Japanese, and Korean business names and addresses. Senzing becomes the most accurate, easiest-to-deploy, real-time ER engine on the market – being deployed across the largest banks, insurance companies, healthcare organizations, and national security agencies, down to small nonprofits.
2026 – Today
Pioneering Agentic Entity Resolution
As autonomous AI agents reshape the world, Jonas is re-defining ER yet again. Without an understanding of who is who and who is related to whom, AI cannot deliver trusted, actionable insights. Senzing is the first to bring Agentic Entity Resolution to market – requiring 100x-1,000x less human effort to combine new data sources and operate entity resolution at scale. With the Senzing MCP Server, both humans and AI agents can deploy, feed, analyze, and publish identity insights entirely conversationally – bringing true identity intelligence infrastructure to organizations for the first time.
Other Fun Facts
Featured in books: No Place to Hide · Safe: The Race to Protect Ourselves in a Newly Dangerous World · The Numerati (Stephen Baker) · The Watchers: The Rise of America’s Surveillance State
Author/co-author: Chapters in O’Reilly’s Beautiful Data (“Data Finds Data”) and Open Government. Published in IEEE Security & Privacy, the Cato Institute, the National Academy of Sciences, and the Markle Foundation Task Force on National Security in the Information Age.
Select media: National Geographic (“Wizard of Big Data”) · Forbes cover story (“Eight Masters of Information” – named “The Watcher”) · Wall Street Journal · Newsweek (“Geek War on Terror”) · NPR Morning Edition · ABC PrimeTime (Peter Jennings) · Nightline (Ted Koppel) · Wired · Men’s Journal · TechCrunch · Condé Nast Traveller · Discovery Channel documentaries · CBS’s The Unit · Triathlete Magazine cover story (“Mastermind, Madman, Miracle”)
National security: Produced the definitive link chart mapping connections between the 9/11 hijackers – demonstrating that at least 13 of the 19 could have been identified using only existing data and basic investigative procedures. First published in the Markle Foundation Task Force report Protecting America’s Freedom in the Information Age (2002), whose recommendations informed the 9/11 Commission Report and were embraced in the Intelligence Reform and Terrorism Prevention Act of 2004.
Keynotes & lectures: Council on Foreign Relations, National Academy of Sciences, NSA, Federal Reserve Board, Wharton, Carnegie Mellon, CSIS, Gartner, OECD (Paris), Singapore Ministry of Finance, and ~200 other invited engagements – with crowds as large as 13,000.
Boards: D’Addario (music) (2014-present) · EPIC.org (privacy) (2013-2025) · USGIF (national security) (2013-2020)
Former affiliations: Markle Foundation (Senior Steering Committee) · CSIS (Senior Associate) · Singapore Management University (Distinguished Engineer, adjunct)
Testified before: DOD Technology and Privacy Advisory Council (TAPAC) · DHS Data Privacy and Integrity Advisory Committee · Public Interest Declassification Board
Personal: Homeless and bankrupt at 20; paid every creditor back at 3% compound interest 21 years later. Sailor. Over 80 full-distance Ironman finishes, including every race offered today. Seven kids if you count them every which way. Screen Actors Guild (SAG) member and Executive Producer (IMDB). ~10x Darwin Awards runner-up (from more careless earlier days). World-renowned for hosting legendary Las Vegas house parties.
