Bruno Lambertini arrived at a Madrid newsroom to be interviewed and promptly reversed the current. For the first hour, he asked the questions. He wanted to know about Spanish advertising, the people inside it, the worries keeping marketing directors occupied. Only after conducting his own field research did he settle into the chair reserved for answers. It was an executive's version of reading the room, except he read it aloud.
The exchange fits a career built less on having a single grand revelation than on staying inquisitive while the ground moves. Lambertini is an Argentine economist who wandered into the overlap of data, technology and creative work, founded an agency called Circus in Mexico City, spread it across eight countries, and then negotiated its combination with S4Capital and MediaMonks. Today he is Global CEO of Marketing Services at Monks. The titles grew longer. The central question stayed short: what has changed?
An economist walks into a circus
Born in Argentina in 1975, Lambertini studied economics at the University of Buenos Aires and graduated magna cum laude. He also studied psychology without finishing the degree, then took postgraduate coursework in the economics of regulation. This is not the usual apprenticeship for an advertising founder, and that may be the point. His early frame was systems: incentives, behavior, rules, numbers.
In 2001, he and two friends created Apernet, a CRM agency designed to combine those numbers with marketing and technology. Four years later, Lambertini and Luis Alonso founded Circus Marketing in Mexico City. They described it as a collective of communication artists and as a place where creativity, art and technology could occupy the same table. The name carried a little mischief. The operating model carried more discipline.
“Circus is our life project.”Bruno Lambertini, 2013
By 2013, Circus had operations in Mexico City, Buenos Aires and Madrid and was opening in Los Angeles. It called itself a micro-network. Each office was meant to be locally credible, while ideas and specialist knowledge traveled between them. Lambertini wanted startup urgency and an artist's standard, with fewer of the sealed departments that make large agencies resemble office furniture warehouses.
The agency's work picked up recognition, including Independent Agency of the Year at El Ojo de Iberoamérica in 2012. Earlier Circus work included a Grand Effie for Dove Pro-Age and awards for work involving Axe, Sony Ericsson and Pumas. Lambertini's language around these wins is more revealing than the trophy count. He treated independent agencies as agents of renewal, useful because they could invent hybrid structures before convention had time to name them.
The network learns to listen
Circus found its natural habitat in social media, where the old diagram of sender, message and receiver had started to look antique. Lambertini argued that communities possessed their own codes and that brands could influence a conversation without owning it. The agency moved away from conventional advertising toward something closer to editorial communication: continuous attention, quick interpretation and useful participation.
The 2018 World Cup offered a tidy demonstration. Circus turned itself into a single-office war room for more than ten clients in seven markets, including work involving Netflix, Uber, Spotify, eBay and Telemundo. Social listening helped teams interpret what people were doing and make creative work for each market. The clocks on the wall read Mexico City, Bogotá, Los Angeles, Madrid, Buenos Aires and Costa Rica. It was a company diagram you could tell time with.
Apernet puts CRM, marketing and technology in the same early venture.
Circus opens in Mexico City and begins its social-first experiment.
Circus combines with S4Capital and MediaMonks after reaching eight countries.
Lambertini becomes Co-CEO of the combined Content practice.
As CEO of Marketing Services, he pushes AI into the production workflow.
In January 2020, S4Capital agreed to combine with Circus. The agency brought an estimated 350 people in eight offices and about $25 million in 2019 revenue into the group. Lambertini had found leaders with compatible instincts in S4Capital's Martin Sorrell and MediaMonks co-founder Wesley ter Haar. He later called them the two phenomena on his team. His relationship with Sorrell sounded particularly kinetic: by nine one morning, he said, they had already spoken, traded seven WhatsApp messages and still had two calls left that day.
For a founder, a merger can be an ending dressed as scale. Lambertini made his a change of canvas. He helped expand the combined company's social capabilities, joined S4Capital's executive committee, became Co-CEO of its Content practice in 2023, and then led Marketing Services as Media.Monks shortened its name to Monks in 2024.
The scale changed his daily weather. Circus had been a founder's life project, close enough to feel the temperature of each office. Monks was a global organization assembled from many companies, disciplines and cultures, all expected to operate under one brand and one profit-and-loss structure. Integration was no longer a transaction completed in 2020. It became the work: connecting content, media, data and technology without turning each specialty into a waiting room for the next.
Lambertini's temperament seems suited to that unfinished state. In conversation he has been described as attentive, measured but energetic, fixed on whatever he is observing and still behaving like a student. He once remarked that answering a long interview in Spanish, a language he used less often in his professional life, opened new paths in his thinking. It is a charmingly economist-like confession: even the language of the question can alter the available answer.
His mentors occupy opposite ends of a useful spectrum. Sorrell brings compression, commercial memory and relentless execution. Ter Haar, the digital-production founder, brings the craft and systems instinct of a company born online. Lambertini sits between them with experience building in Latin America and selling to the platforms that rearranged media. The connection is not ceremonial. He has spoken of daily contact, hours of calls and messages arriving before breakfast has had a fair hearing.
“Our ability to predict has been limited.”Bruno Lambertini, 2023
His favorite tense is now
Lambertini is suspicious of distant-future theater. When competitors promise tomorrow, he prefers decisions with fingerprints on them. He says the modern CMO belongs beside the CEO and CFO, shaping the company's direction and owning the many interactions between a business and its customers. Reducing that job to brand management is like giving an air-traffic controller one runway and hiding the radar.
His framework for transformation has four verbs: adapt, solve, create, disrupt. It begins with responsiveness and earns its drama only at the end. He divides the marketing problem into a backbone of data, infrastructure and marketing technology; an always-on layer of creation and amplification; and brand power, where cultural relevance is won or lost. The aspiration is to simplify an industry that has made a respectable business from complexity.
The emphasis on the present is not short-termism. It is a response to humbled forecasting. Markets, platforms and consumer habits have refused to obey the industry's slide decks, so Lambertini wants organizations that can make difficult choices before certainty arrives. His version of ambition is operational: design the company so information moves quickly, put makers near decisions, and let the customer problem cross departmental borders even when the org chart would prefer that it show a passport.
That view also explains his approach to artificial intelligence. Lambertini talks about production examples, not synthetic thunderbolts. In a 2025 account of Monks.Flow, he and Dave Carey described a way to inject AI and automation from briefing through delivery. A General Motors campaign could use templates for 700 assets and their required sizes and translations. A Puma assignment generated roughly 20,000 assets in two weeks.
The consequential idea sits behind the asset count. If automation compresses labor, an agency cannot cling forever to selling hours. Lambertini sees the commercial model moving toward payment for output and, eventually, performance against agreed measures. AI then becomes more than a creative instrument. It changes workflow, pricing and accountability. The glittering machine has to meet the invoice.
Talent without a periphery
There is another line running from Circus to Monks: Lambertini's conviction that Latin America is not a distant delivery center for ideas made elsewhere. When Monks rebranded, he described the region as central to the company across technology and marketing, a source of innovation, creativity and leadership. The claim has biography behind it. His own path ran from Buenos Aires to Mexico City to Los Angeles and into a global executive role.
A network deserves the word only when influence can travel in every direction. Circus learned that through local hubs. Monks now attempts it at a far greater scale, with thousands of people and the inevitable gravity of a large organization. Lambertini's contribution is the stubborn question inside the machine: can it still notice what has changed?
His story offers founders a useful distinction. A company name can disappear after a combination; a practiced way of seeing can survive. Circus lives less as a logo than as a set of habits: blend disciplines, keep local judgment close, listen before speaking, and organize for movement. Even the old circus maxim still fits. The tent is temporary. The act has to travel.