Agentic AI for financial services is one of the fastest-growing segments in technology, with the global market projected to expand from $2.1 billion in 2024 to $80.9 billion by 2034, a compound annual growth rate of 43.8%, according to market research published in 2025. Finding someone who can build the operational side of these companies is harder than it looks, because of what the work actually involves. It takes someone who can think analytically, deliver work that has real financial stakes attached to it, and build processes from scratch in places where none exist. At Sumvin, a B2C fintech platform developing a delegated finance platform, Matthew Doll does all three simultaneously.
“The Chief of Staff role is one of the most misread positions in any company,” Doll says. “People assume it’s administrative or that you sit next to a powerful person and relay messages. At Sumvin, it means there is no problem that falls outside my remit. If it needs to be solved, I find a solution.”
His role covers operations, HR, finance, legal, vendor management, IT, and executive counsel at a company of ten people building in a product category with no established operational precedent. The infrastructure he manages was built entirely by him, by his own account, across every function the company runs, and the combination of credentials and experience that qualifies him to do that is not one that a conventional career track produces.
A Career That Refused to Follow a Script
The fintech industry has become one of the most competitive destinations for STEM graduates, with the US financial sector increasingly attracting top scientific and engineering talent away from research careers. What that pipeline rarely produces, however, is the operator who can sit above every function in an early-stage company and run all of them simultaneously. Technical fluency gets people through the door. The capacity to hold organizational complexity at the level a Chief of Staff requires at a startup demands something additional, a combination of rigorous analytical training, strategic advisory experience, and hands-on operational delivery that most career tracks build only one of.
Doll holds a first-class MChem in Chemistry from the University of Oxford, where his master’s research produced two published academic papers alongside top grades across Chemistry, Physics, Mathematics, and Further Mathematics at A-level. Publishing peer-reviewed research as an undergraduate places him in a small fraction of science graduates, and after graduation, he took that foundation in a different direction entirely, moving through manufacturing, consulting, institutional fintech, and early-stage startups over several years rather than deepening a single discipline.
“People underestimate what a technical education gives you as a generalist,” he says. “It’s not the content, it’s the method. You learn to be rigorous when everything is uncertain, and that transfers directly into running operations at a company where no two days are the same.”
What a Chemistry Degree Actually Teaches You
Non-linear career paths are accelerating across the workforce, with workers increasingly prioritizing skill development and lateral moves over traditional management tracks. In most cases, that produces versatility. In Doll’s case, it produced something more specific: a sequential accumulation of capabilities, each role filling a gap left by the previous one, that turned out to map well onto what a Chief of Staff at an early-stage fintech actually needs to do day-to-day
At Prysmian, a world-leading cable manufacturer, he served as the sole project manager for implementing a 6S operational framework across his section of the factory, designing and executing a structured improvement program independently in an industrial environment with little appetite for change. He then secured a consulting internship at Simon Kucher, a global strategy consultancy, working within their life sciences team, adding high-pressure analytical work and client-facing strategic advisory to a profile already grounded in scientific method and operational delivery.
He also served as a founder’s associate at Sibylline Labs, a startup venture studio, before a serious accident left him in a coma and temporarily unable to walk, delaying his ION start date by three months. Once he had recovered, he joined ION as planned, a period he described as having deepened his resilience and gratitude for life.
At ION, one of the most established enterprise software firms in financial technology, he led a project that completely overhauled an existing client engagement, building the business case that resulted in a three-million-dollar go-ahead decision built on analysis and a business case he developed and presented to the leadership.
“You learn quickly in those environments that the quality of your thinking has a direct dollar value,” he says. “There’s no place to hide.”
Why This Role, at This Company, at This Moment
Sumvin is building toward a genuine inflection point in personal finance. The tools available to consumers today surface information and wait for the user to respond, leaving account management, fund reallocation, subscription oversight, and financial decisions as tasks the individual still has to execute manually. Sumvin’s platform removes that burden entirely, allowing customers to define their financial intent and parameters while the system handles execution automatically on their behalf.
Agentic AI is already becoming a core component of financial workflows across the industry, enabling faster and more autonomous decision-making at a structural level, and Sumvin is bringing that capability to consumers while institutional fintech is only beginning to apply it at the enterprise level.
Building a product with no operational precedent inside a ten-person company means someone has to design the infrastructure that lets engineers build without friction, founders lead without administrative overload, and the organization functions legally, financially, and structurally at the same time. That person needs to have operated across enough disciplines to anticipate failures that specialists in any one area would not see coming.
“When a company is ten people, the job title matters far less than the question: who makes sure nothing falls through the cracks? At Sumvin, that’s me, and I wouldn’t have it any other way..”
Why It Matters Now
There isn’t an obvious hiring pipeline for this kind of role. The combination of academic research, high-stakes commercial delivery, and ground-up operational experience across multiple industries isn’t something a recruiter can filter for on LinkedIn. Doll’s background happens to cover all of it, which is a large part of why he’s in the seat. Doll’s record satisfies all of those requirements at the same time, and the breadth of that record is precisely what makes him capable of running the full operational infrastructure of a company building in territory where no operational template yet exists.
“I didn’t plan the career I have. I just kept taking the role that felt like it would teach me the most, and eventually the pattern became obvious in hindsight.”
