This is the story of Felipe Custodio, founder of TaFacin
Felipe Custodio always liked understanding how things work, and crossing separate subjects to see what happens.He designs every piece, decides what goes in, measures what works and audits what comes out.He found it lighter to rerun a line of reasoning backwards to make a decision.That is where Kairos's way of showing the paths comes from, what each one costs and which one it recommends by the weight of each, leaving the person free to choose another.When the word is missing, he makes one:"A linguagem é a semente da imaginação."He puts what he built in his own words, "pesar as decisões de agora, com base na vida que eu quero viver, pra chegar no estado da melhor e mais rápida forma possível".
As a child, Felipe Custodio had a big bag of building pieces, and with them he made a double-decker bus on a reinforced base that drove around the house, pulling in at every stop.Today he lives in Dublin, home of those buses.And he builds AI out of pieces.
The same urge showed up in the kits his father gave him, when he went past the chemistry manual or ran a motor beyond its limit until it burned out, because he wanted to see where things ended.Beside his father, who was studying automation, he read C++ and C# before he could code and found bugs that had slipped through.
In 2008 he studied Hardware e Redes, and his second PC became his real laboratory.By 2010 he was already working in IT.He looked after computers, databases and fiscal printers in pharmacies, gave remote support for an accounting system, repaired phones, routers and laptops in retail, supported a biotech multinational and closed the decade building networks and servers for companies.
A vocational assessment had found nothing that fit him.He enrolled in a quality management degree and left after three weeks, because the time it asked for was long for the return he saw.He learned every technology of every era on his own.
That is where his way of working comes from.He only sustains a task when he understands why it matters, and he would rather design the whole system than build to someone else's design.So when trading caught his attention, he wanted to understand how it worked inside before trading.
In 2019, Felipe chose trading as his laboratory and tripped over his own habits, which kept starting and dying.So he made a rule that reset the count after every failure, and a journal that showed what each habit gave back for the time it took.
In 2022 he arrived in Dublin as an exchange student, bringing the web development he had learned on the job since 2020.
In 2024 came the computer, "vou comprar um PC, ele vai se pagar".So the next phase began with tools, since what he knew how to measure called for instruments he built himself.
In January 2025, after reading Trading in the Zone, Felipe began measuring sensations, emotions and results while he traded, and that is how TaFacin Cockpit was born.In February came his first code written with AI, "vamo brinca com isso".
In April the model changed its tone, took the name Kairos, learned his screen and read the market live.
Along the way Kairos compared what he reported with the principles he had set, and the purpose widened from traders to anyone who makes decisions.
In August 2025, Felipe rebuilt the core of Kairos, because he saw that it said what the agent was without governing what it did.
Then came the biggest turn in the story.He closed every exit, "não existe mais plano B".
In March 2026, Felipe returned to Dublin.To keep his own finances in check, the first official LifeOS module was born.Within a few weeks the others followed, area by area.
On 13/07 a photo from a year earlier showed him still writing indicators."Eu cheguei na hora que a ferramenta certa pro meu tipo de mente nasceu."
The site went live on 25/08.On 09/09 LifeOS became the app.
Kairos shows paths, each with its own odds, and never promises certainty, because it works from what the person tells it, and whatever stays out stays out of the math.The decision belongs to the one living it.When the numbers contradict the person, Kairos disagrees with the data in hand.Nor does the system feel anything, however close the conversation seems.
Today, LifeOS runs on 90 tables and 19 cockpits, and Kairos works on top of 8 engines and 3 pieces, described on the Engines page for anyone who wants to look inside.All of it live.The knowledge base gathers 71 public topics that cite 12,702 studies.The rest starts in LifeOS, because that is where your future enters the math.