Rachael Donnelly and the discipline of useful data

The first system Rachael Donnelly learned to modernize ran on envelopes. Soon after college, she worked for Friends' Health Connection, a nonprofit whose founder had been matching people through physical letter mailers since 1986. The internet offered a faster way to form that community, but moving the service online was not simply a software project. People had to understand it, trust it and choose to participate. Donnelly helped build awareness programs with hospitals, organize events and bring speakers to the community. Watching the pieces connect gave her an unexpected career signal: she liked building a brand and seeing the response arrive in real life.

She had not planned to become a marketer. Her Rutgers education combined political science and criminal justice with minors in psychology and criminology. Later, at the University of Leeds, she studied advertising and marketing. The combination looks less unusual in retrospect. Marketing at its best asks questions about systems, incentives and people: who decides, what earns trust, why a message travels and what makes an institution legible from the outside.

The nonprofit gave those questions a practical setting. It also established a pattern that would follow her from startup advertising technology to a global agency and then Experian. Donnelly tends to arrive where two worlds need translation. The first time it was letters and the web. Later it would be products and customers, offline records and digital signals, privacy expectations and advertising performance.

The internship that contained an entire company

After taking marketing courses in graduate school, Donnelly accepted an unpaid internship with an ad-tech startup. She recalled being about the fifth employee in its New York operation. Tiny offices erase the comforting lines around a job description. On a given day, she might help deposit checks, get an advertising campaign live, run performance reports or join a client pitch. Every task exposed another part of the machine.

The appeal was the motion. Advertising technology in the early 2010s sat in the rush of online video, programmatic buying and increasingly granular measurement. Donnelly worked at Unruly across campaign and media roles, then moved through solutions marketing and product marketing at Rocket Fuel. The platforms changed, but the job kept rewarding the same reflex: learn how the thing works, then explain why anybody should care.

Product marketing finally gave that reflex a home. Donnelly describes the role as becoming “almost the CMO of your individual product.” It is an exacting phrase. A product marketer cannot survive on slogans. She must know the product well enough to challenge its assumptions, the market well enough to locate its opening and the organization well enough to coordinate a launch. Sales, finance, product and senior leadership all touch the work. The role is a compact general-management apprenticeship disguised as marketing.

At Publicis Media, Donnelly spent more than six years climbing from director to vice president and then senior vice president of product marketing. It was time enough to see bright new tools become standard equipment, and time enough to learn that a market rarely moves in a straight line. By the time she joined Experian in October 2021, she had practiced translating products at startup speed and agency scale.

Marketing to the people who market

Experian presents a peculiar branding problem. Consumers tend to recognize the name through credit reports and scores. The Marketing Services business sells something different: data and identity capabilities that help brands understand customers, find prospective customers, choose channels and measure what happens next. Donnelly's audience consists of professional marketers. Those marketers, in turn, are trying to communicate with people. Every explanation has to work on both levels.

When she arrived, Experian was integrating Tapad, a digitally focused identity business, with a Marketing Services operation historically associated with brands and offline data. The assignment was not to paste two descriptions together. It was to form a coherent promise from two customer sets, two technical histories and the equity of a much larger parent brand.

Donnelly's framing begins with understanding rather than targeting. Data can tell a marketer what is known about an existing customer, but its greater value may be in locating the blank spaces: what the brand does not know about current customers, what it does not know about potential ones and which missing facts would change the offer or message. The campaign comes after the diagnosis.

This is a quieter view of data than the usual promise of perfect personalization. It treats information as material for judgment. More signals do not automatically create more meaning. They have to be joined carefully, interpreted in context and used in a way that respects the person behind the record.

Clean inputs, moving targets

Asked for a simple first step for a brand beginning a data strategy, Donnelly did not prescribe an advanced model. She said to make sure the data is clean. Companies often believe their information is ready until they try to make sense of it. A strategy built on inconsistent, incomplete or inaccessible records inherits every one of those flaws. Her phrase for clean data is “the gold currency” of implementation.

The advice has grown more relevant as artificial intelligence has made ambitious outputs easier to request. A polished answer can arrive before anyone has inspected the inputs. Donnelly's sequence runs in the opposite direction. Quality comes first. Then connection. Then activation. The discipline is easy to omit because the foundation is less visible than the campaign built on top of it.

Change is the other certainty. Cookies lose relevance. Browser and mobile policies shift. Privacy rules evolve. New identifiers appear. Donnelly argues against throwing every bet into one basket because the marketer can end up flat-footed when the environment changes. The durable capability is not devotion to one signal. It is the ability to evaluate several, connect them in privacy-conscious ways and keep the intended customer interaction in view.

That perspective has placed her in public conversations about television measurement, alternative currencies, the future of media and emotional agility in leadership. At Cannes Lions, she has joined executives from broadcasters, platforms and brands to discuss how audiences are counted across screens and how diverse leadership affects the media business. At CES 2026, Experian listed her among the leaders representing its Marketing Services team. The venues change; the subject remains a system in motion.

The title and the team beneath it

There is one more bridge in Donnelly's story: the distance between an individual title and collective work. In 2026, Chief Marketer named her among its Top Women in Marketing and recognized her as one of the year's Marketers of the Year. Her public response did not linger on the individual honor. She described it as a celebration of what the group had built across four and a half years at Experian, then wrote that there is no “top marketer” without the best marketing teams.

That response fits the career beneath it. The nonprofit modernization required a founder, hospitals, speakers and a community willing to move online. The early startup required a handful of people to ignore the borders around their jobs. Product marketing required every function to contribute to one market story. The CMO may become the visible name, but the work has always depended on a network.

Donnelly also carries that idea outside the formal job. Her public professional record includes mentoring with She Runs It and board service with Friends' Health Connection, the organization where her marketing career first took shape. The connection makes a tidy circle without turning the career into a tidy plan. There was no master blueprint, just repeated proximity to useful problems.

The practical lesson is not that every nonprofit project leads to a CMO office. It is that generalists can compound. Depositing a check, running a campaign, reading a report and pitching a client may look like unrelated errands. Together they teach cash, execution, evidence and persuasion. Product marketing then gives those lessons a shared object. Executive leadership widens the object from one product to an organization.

A career in translation

The thread through Donnelly's work is translation, but not the cosmetic kind. She has moved between a founder's mission and an online community, a technical platform and a client pitch, offline knowledge and digital identity, a complicated data supply chain and a meaningful message. Good translation changes the work because it forces every side to become clearer.

Her aspiration at Experian, articulated early in her tenure, was to establish Marketing Services as a leader in the evolution of identity for marketing and to help marketers navigate uncertainty. The second half matters. Leadership in a changing category is less about declaring the future than giving customers a way through it.

Donnelly's career offers a grounded operating rule for that passage. Learn the whole machine. Clean what feeds it. Refuse to confuse a temporary signal with a permanent truth. Give the team credit. Then build a message that a person can actually use.