Meet Thierry
Thierry Sequeira is the CEO and Founder of Massive Rocket, a London based agency working across CRM, data, engineering, marketing, AI, Braze and Snowflake. He started the company in 2018 without outside funding and grew it from a one person operation into a team of around 100 people that has delivered more than 200 CRM implementations for global QSR and fintech brands. Behind that work is a personal philosophy shaped by family, migration, failure and a lasting belief that opportunity carries responsibility.
A Childhood That Changed What Opportunity Meant
Some people arrive at work with an idea of success that was formed slowly over time. For Thierry Sequeira, certain parts of that understanding were present before he was old enough to name them.
He was six when soldiers took everything his family had in Congo. His family managed to leave because they had money and connections, advantages that many others did not have. Thierry has carried the awareness of that difference throughout his life.
It gave opportunity a different meaning.
He did not grow up believing that everything he had was simply the result of individual effort. He understood early that circumstances could determine who gets to escape, who gets another chance and who does not. The experience left him with a sense of responsibility that would later influence how he thought about leadership and the people around him.
That responsibility was reinforced by his father.
Thierry spent much of his childhood on construction sites, watching his father work. His father spent 71 years repairing things for other people. He fixed heaters during winter, helped families move after weddings and divorces, and handled whatever needed attention. The work was practical and often invisible, but it mattered to the people receiving it.
There was no need for recognition.
His father simply saw something that needed fixing and worked on it.
Thierry eventually became a builder too, although his materials changed. Instead of construction equipment, he works with data, engineering, marketing and technology. The instinct remains familiar: understand what is broken, understand what people need, and build something useful.
“I’m a builder. What drives me is making useful things people genuinely want, and putting the people around me, my team, my clients, my partners, in a position to win.”
That perspective sits quietly underneath Thierry’s professional life. The company may work with sophisticated technology and global organisations, but his motivation remains connected to something much simpler. He wants the things he builds to be useful, and he wants the people around those things to benefit from them.
The Lessons That Came From Failure
Massive Rocket was not Thierry’s first attempt at building a company.
His first startup taught him something uncomfortable. He did not yet know how to sell or manage projects effectively. His second company presented a different lesson. The product itself was good and attracted around 3,000 users, but the business model was not strong enough to support it.
The company eventually died.
Those experiences could have encouraged him to look for a safer path. Instead, they became part of his education.
Entrepreneurship often leaves people with polished versions of their stories. The failures become footnotes once the later success is visible. Thierry’s approach is different. He treats those earlier attempts as essential parts of the education that made Massive Rocket possible.
By the time he started Massive Rocket in 2018, he had already experienced the difference between having a product and having a viable business. He had learned that technical ability did not automatically translate into commercial understanding. He had also seen how easily something useful could fail if the underlying model did not work.
He started Massive Rocket alone and hired his friend Kar. There was no funding round waiting behind them and no investor providing a safety net.
The company had to earn its way forward.
That became one of the defining characteristics of the business. Every salary paid had to come from work clients valued enough to pay for. Every stage of growth had to be supported by actual demand.
Over time, the company grew to around 100 people and completed more than 200 CRM implementations for major brands in QSR and fintech.
Yet Thierry’s pride is not simply in the scale.
It is in the fact that the company was built through a long series of useful exchanges between the team and its clients. The business survived because it created something people were willing to pay for.
That distinction matters to Thierry because it has shaped the character of the company.
When a Difficult Chapter Is Not the Ending
Failure is not the only form of uncertainty Thierry has experienced.
He moved countries six times while growing up, and each move affected his education. Whenever he entered a new environment where he did not speak the language, his grades collapsed.
From the outside, those results could easily have been interpreted as a lack of ability.
But the circumstances told a different story.
The same person who struggled academically in one country could begin again in another environment. The pattern taught Thierry that performance cannot always be separated from context. A difficult moment can tell you something about what is happening around a person without necessarily telling you what that person is capable of becoming.
That lesson became important later.
He has been the foreign child, the immigrant without papers and the founder whose companies failed. None of those experiences became permanent definitions.
The idea that a difficult chapter is not the entire story became something he could return to whenever circumstances became uncertain.
COVID provided one of those moments.
When the pandemic hit, clients stopped paying, putting the company and everything Thierry had built under significant pressure. The future suddenly looked much less certain.
The experience also reinforced the value of having people around him who are willing to be honest.
Thierry keeps a small circle of people who will tell him what they really think. When he needs perspective, he calls them.
That is not presented as a complicated leadership system. It is closer to an understanding that no founder can see everything clearly all the time.
There is another part of his life that helps create distance from work.
Music has been with Thierry since his teenage years. He played drums, performed in around 50 concerts during university and continues to make music today. It gives him a place where his mind can step away from business and technology.
He does not describe himself as someone who naturally found perfect balance.
Instead, he learned what restores him and decided to protect it.
What Massive Rocket Is Really Building
Today, Thierry sees the impact of Massive Rocket through several different groups of people.
For the team, the company is a place where people can develop a specialised craft. Around 100 people are working on complex projects for global organisations, gaining experience and exposure to work that can shape their careers.
For clients, the work is about helping them communicate with their customers more effectively.
CRM technology gives brands the ability to speak to millions of people. But scale alone does not make communication meaningful. A message can be technically correct and still be irrelevant. It can reach the right person and still feel like noise.
The challenge, then, is not simply reaching people.
It is understanding them well enough to communicate with care.
This is where Thierry’s approach to technology connects with his wider philosophy. The systems may involve data, automation, engineering and AI, but the purpose remains human.
The customer is still a person on the other side of the communication.
Massive Rocket’s work is therefore concerned with creating systems that help brands make their communication more relevant and useful rather than simply increasing the number of messages they send.
There is also a broader industry ambition.
After more than 200 implementations, Thierry wants to make the knowledge behind that work available beyond the agency itself. He is writing an Agentic CRM book and developing a certification programme to help people understand how the discipline should evolve as artificial intelligence changes the way CRM operates.
For Thierry, knowledge has little value if it is permanently locked away.
He believes that what people learn becomes more valuable when it is taught to others. The goal is to help establish a method that can continue to develop even when individual projects or companies change.
The Principles He Carries Into Leadership
Thierry’s principles are closely connected to the experiences that shaped him.
The first is service.
He believes leadership begins with taking care of people, including partners, customers and team members. It is less about authority and more about responsibility.
The second is earning what you have.
Building Massive Rocket without external funding has reinforced his preference for creating a business through work that customers genuinely value. It has also given him a particular appreciation for the character that develops when a company has to stand on its own.
The third is giving credit.
Thierry believes ideas have a history. People build on the work of others, and acknowledging that lineage matters. Credit should belong where it is due.
The fourth is maintaining a sense of taste.
For him, good work should not only solve an immediate problem. It should feel right over time. That means resisting the temptation to release something simply because it is possible.
The fifth is learning from failure.
Thierry does not treat failed ventures as embarrassing chapters to hide. He believes founders should conduct honest post mortems, including the parts that are uncomfortable to admit.
Those principles are connected by another lesson from his father.
Do the work carefully.
Do it with method.
Do it whether someone is watching or not.
That is perhaps one of the strongest links between Thierry’s childhood and his present life. The tools have changed, but the basic approach has not.
A Future Larger Than One Company
The immediate future Thierry sees for Massive Rocket is closely tied to artificial intelligence.
He believes CRM is entering a period of major change. Repetitive tasks that once required human attention can increasingly be handled by AI agents, while people can focus more heavily on judgement, creativity and complex decisions.
For Thierry, the important question is not simply what AI can automate.
It is what the human beings involved in the process should do with the time and attention that technology gives back.
That is part of the reason behind the Agentic CRM book and its certification programme. The book sets out a practical method for running CRM in the AI era, built on the lessons of more than 200 implementations, and the certification is already being taught to client teams in London, online and on site. The aim is for the knowledge to be documented, shared and developed as the industry changes.
But his longer term vision moves beyond technology and agency work.
After spending around two decades helping build other people’s brands, Thierry wants to spend the next part of his life creating something of his own. He imagines a creative world that brings together story, music, design and technology.
He wants to create something designed to outlast him.
That ambition is deeply personal.
Thierry wants his children to see him building in the same way he watched his father build. The details will be different, but the underlying example will be familiar: take something seriously, do it with care, and make it useful to other people.
What He Wants Others to Remember
There is a quiet consistency in Thierry’s story.
The child who left Congo after losing everything became an adult who thinks deeply about what people do with opportunity. The boy whose grades suffered each time he moved countries became a founder who learned not to treat one difficult period as a permanent definition. The entrepreneur whose first two companies failed became someone who uses those failures as part of his working education.
His career has been shaped by technology, but his values came from much older places.
They came from his parents.
His father showed him what it means to quietly repair what is broken. His mother built her own company in Congo, rebuilt the family’s life across four countries and survived cancer. Between them, Thierry saw resilience expressed in different forms.
Those examples continue to influence the way he thinks about work.
He wants to learn the whole craft rather than stopping after mastering one part. He wants to understand why things fail rather than simply moving past them. He wants to create things that remain useful years after they are launched.
Most importantly, he wants his work to leave people better positioned than before.
That may be the clearest connection between his childhood and his ambitions for the future.
Opportunity gave Thierry a way forward when he was six. His parents gave him examples of persistence and care. Failure taught him humility. Migration taught him perspective. Music taught him how to step away and recover.
Now he is using those lessons to decide what kind of builder he wants to be.
The answer is not simply someone who creates successful companies.
It is someone who builds carefully, shares what he learns and uses what he has been given to create opportunities for others.
For Thierry Sequeira, the work is still being built. And perhaps that is exactly the point. The measure of what he creates will not only be found in the size of the company or the technology behind it, but in whether the people who encounter his work are better off because he was there.
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