Powering Change. Accelerating Modernisation. At Quantum Six, we’re redefining what it means to be a consultancy in financial services. As the go-to specialists for ecosystem advisory and core banking transformation, we partner with banks, financial institutions, and fintechs to shape bold, modern strategies — always with independence, clarity, and confidence. Our expertise spans technology and business strategy, target operating model design, vendor selection, change strategy, and programme assurance. Whether you're modernising a core platform or navigating a complex ecosystem, we bring deep insight, execution experience, and vendor-agnostic advice to drive success. Our services • Architecture • Consulting Delivery • CXO Advisory • Ecosystem Advisory • Programme Support
| Website | https://quantumsix.com/ |
| Revenue | $6.6 million |
| Employees | 22 (15 on RocketReach) |
| Founded | 2020 |
| Phone | (305) 890-9078 |
| Industry | Business Consulting and Services, Business Services General, Business Services |
| Keywords | Banking Consultancy, Strategy Consulting, Transformation Consulting, Financial Services Consulting, Technology Consulting, Payment Systems Consulting, Digital Banking Transformation, Financial Technology Consulting, Banking Technology, Financial Transformation, Consultancy Services, Management Consulting, Change Management Consulting, It Consulting Banking, Independent Consulting, Transformational Change, Core Banking Systems |
| Competitors | Nine Feet Tall, Lion and Gazelle, Six Sigma Qualtec, CCS Business, Change Management Professionals Limited (view competitors) |
| SIC | SIC Code 87 Companies, SIC Code 874 Companies |
| NAICS | NAICS Code 5416 Companies, NAICS Code 541611 Companies, NAICS Code 54 Companies, NAICS Code 541 Companies, NAICS Code 54161 Companies |
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Quantum Six Questions
The Quantum Six annual revenue was $6.6 million in 2026.
Gino Brenzini is the COO of Quantum Six.
15 people are employed at Quantum Six.
Quantum Six is based in London, England.
The NAICS codes for Quantum Six are [5416, 541611, 54, 541, 54161].
The SIC codes for Quantum Six are [87, 874].
Top Quantum Six Employees
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25+
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Mark McGrath
Co-Founder and Executive Director at Quantum Six
Bournemouth, England, GB25+ -
Martyn Wallen
Chief Client Officer at Quantum Six
United Kingdom24 -
John Smith
Head of Ecosystem Advisory, Partners, Alliances and Marketing at Quantum Six
England, United Kingdom5+2 -
Martin Bailey
Associate at Quantum Six
Hemel Hempstead, GB43 -
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Daniel Wayne
Director at Quantum Six
Elstree, GB12 -
Mark Robinson
Delivery Director at Quantum Six
Puckeridge, GB4
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