Marco Cancellieri and the Prototype That Became a Bank

The first version of Trade Republic began, as consequential things sometimes do, one morning after a hackathon. Marco Cancellieri had met Christian Hecker and Thomas Pischke in Munich in late 2015. Hecker knew capital markets. Pischke, a physicist with a taste for quantum computing, understood infrastructure. Cancellieri was the mobile-app builder. The meeting ended. The next day, he began coding.

A lesser origin story might stop there and allow the overnight prototype to perform all the dramatic labour. Cancellieri’s story gets more interesting after the screen lit up. A working demo is an argument. A bank is a thicket of permissions, safeguards, integrations and patient compromises. Between those two objects sat nearly four years of work, a 12-square-metre office, an incubator in Hamburg, repeated trips to programming contests and the solemn business of persuading German regulators.

Cancellieri was 21 when he left his media-informatics studies at Ludwig Maximilian University of Munich to commit to the venture. He was not abandoning an established profession. He was choosing the unfinished thing. By then, unfinished things were rather his specialty.

A portfolio of useful oddities

Before brokerage, there were experiments. DietScope, which won AngelHack Zurich in 2015, checked whether a food item suited someone’s diet. CouchBanking put online banking on Apple TV and placed third at a UniCredit app competition. FLIXRAY, a later first-prize winner at TV Hackday, used a phone’s camera to recognize what was playing on television and summon information about the cast and programme.

None became the centre of a European financial institution. Together, however, they make a compact map of Cancellieri’s instincts. Take a familiar activity. Notice the device in the room. Remove a little friction. Give the user an answer before the user has grown tired of the question.

The competitions also reveal how he learned in public. Hackathons compress product development until every instinct becomes visible. There is no season for strategic ambiguity. A team must choose a problem, make something that functions and explain it before the room loses interest. Cancellieri collected a first place, a second place, a third place and a specialist API prize across events in Zurich and Germany. The order matters less than the repetition. He kept returning to rooms where a half-built idea had to survive contact with strangers.

That practice suited the future company. A consumer-finance app is judged with similar speed, except the judge is alone on a train and may be carrying a month’s savings. Every extra instruction feels heavier. Every mysterious button asks for trust it has not earned. The early projects taught different technologies, but they rehearsed the same courtesy: understand the moment, then make the next action obvious.

His stated interests were equally revealing: reverse engineering, hardware and software. Reverse engineering is the polite art of curiosity. It begins with the suspicion that an object will confess its logic if you are willing to take it apart. Traditional online brokerage, in the middle of the last decade, offered plenty to take apart. Its interfaces frequently looked like tax forms had been granted electricity.

“We built an intuitive search, want to make use of all the smartphone’s features and offer the best user experience possible.”Marco Cancellieri, describing the early app

The sentence came from Cancellieri when he was still introduced as a media-informatics student. It is neither mystical nor grand. That is its charm. Search should be intuitive. A smartphone should behave like a smartphone. The experience should be as good as the team could make it. Many durable product ideas arrive dressed as common sense after somebody has spent years making them so.

The long distance between a demo and a bank

The company was first called Neon Trading. Its founders entered Comdirect’s startup programme, where the comforts included a free office and a modest allowance nicknamed pizza money. They carried versions of the product to hackathons and tried them in front of people. This was product research with applause, judgement and occasionally a cheque attached.

The trio also shared a flat for a year. Hecker later said that their complementary strengths mattered, and that they had gone six years without a serious fight. This is either evidence of exceptional harmony or a shared understanding that regulated finance already supplies enough conflict for everyone.

The early Berlin office had its own visual joke. Outside, an unreconstructed building on Kastanienallee. Inside, a bright white loft, glass meeting rooms and screens carrying market prices. Near the coffee machine hung the framed securities-trading-bank licence, awarded in December 2018 after the long regulatory wait. On one reporter’s visit, Cancellieri was working the espresso machine. Software, banking and coffee had finally acquired the appropriate paperwork.

Public access arrived in 2019. The proposition compressed an intimidating act into a phone-native routine: search, choose, transact. A one-euro external settlement fee replaced percentage commissions on trades. Savings plans lowered the barrier further. The product did not make markets simple, because markets are not simple. It made the door less ornamental.

When three taps meet ten million people

Scale arrived in stages. By 2021, Trade Republic had passed one million customers and raised $900 million at a reported valuation of $5.3 billion. Forbes placed Cancellieri on its 2022 Europe 30 Under 30 finance list, crediting his software expertise and his role as Head of Mobile. A full banking licence followed in 2023. By the start of 2025, the company reported eight million customers and more than €100 billion in assets. Its current public figures are larger again.

These figures belong to the company, not to one founder, and that distinction matters. Cancellieri’s contribution is better understood at the scale of taps, screens and milliseconds. The chief executive explains the institution. The mobile engineer decides whether the institution makes sense under a thumb.

The founding team’s mixture was unusually legible. Hecker brought finance and strategy. Pischke brought infrastructure and security. Cancellieri brought the interface through which nearly every customer would meet both. Hecker once described Cancellieri’s skills and personality as the missing fit in a rounded team. A good founding team is not a choir. It is a peculiar machine whose parts disagree productively with gravity.

Damaged MacBooks, second lives

Success can turn an engineer into a ceremonial object. Cancellieri’s public trail suggests he resisted the conversion. His GitHub profile still resembles a workbench: Swift, JavaScript and TypeScript projects; tools for gesture tracking; experiments involving a Teenage Engineering speaker; and Cilicon, an open-source app for running short-lived macOS virtual machines.

Cilicon solved an unromantic problem. Mobile teams need continuous integration, the automated checking that catches broken code before it travels. Cloud-based macOS machines could be slow and costly. Trade Republic had damaged M1 MacBook Pros available. Cancellieri’s tool provisioned ephemeral virtual machines on the hardware, helped the company switch to self-hosted runners and, by its account, tripled testing speed.

There is a pleasing economy to the episode. The founder of a company devoted to putting idle money to work found a job for damaged laptops. He then published the tool so other engineers could use it. In an industry fond of guarding its mechanisms, the gesture opened one small door.

The prototype was overnight. The institution took years. Cancellieri’s craft lives in the distance between those two clocks.

The interface is the argument

Trade Republic has expanded beyond the narrow outline of its first broker app. It offers savings, investing, cards and banking features across European markets. The regulatory title has changed. The customer count has multiplied. The central product argument, though, remains recognisable: personal finance should be available without the ritual humiliation of a bad interface.

Cancellieri is not a prolific public narrator of his own life. His online presence is mostly professional, technical and restrained. That leaves fewer quotable manifestos, but it also leaves useful evidence. Code repositories. Product releases. A history of small prototypes. A co-founder’s recollection that the app began the next morning.

The first prototype mattered because it made an idea visible. The decade after mattered because visibility creates obligations. Ten million customers do not need a demo. They need a system that works on an ordinary Tuesday, with their money inside it. That is less cinematic work. It is also the work by which the cinematic opening scene earns its ending.

Some founders become synonymous with a microphone. Cancellieri’s record points back to the screen. A search box. Three taps. A test runner made from bruised hardware. The scale may be measured in billions, but his signature remains compact enough to fit in a hand.