He arrived in Los Angeles with no English and a $4.25-an-hour job. Two decades later he sits at the head of Loan Factory, the No. 2 mortgage brokerage in America - and the code on the servers is his.
There is a building on Tully Road in San Jose where the second-largest mortgage brokerage in the United States runs its operations. The founder is Vietnamese, holds a master's from UC Berkeley, codes in his off hours, and answers to NMLS #320775. His name is Thuan Nguyen, and in 2021 he became the first mortgage broker in America to close more than two billion dollars of loan volume in a single calendar year. He did it again the next year. Then he kept hiring.
Loan Factory does not look like a startup and does not behave like a bank. It runs a network of more than two thousand loan officers spread across the United States, all moving loans through MOSO, the in-house platform Nguyen began coding in 2013 because the off-the-shelf alternatives bored him. The company now writes mortgages, refis, HELOCs, cash-outs, and construction loans, and the marketing copy on the website uses the phrase “real-time rate comparison” without irony, because in their stack that phrase actually means something.
The headquarters at 2195 Tully Road is a five-minute drive from the first house Nguyen ever bought, which is the house that turned him into a mortgage broker in the first place. He has never moved the company out of San Jose. He has never, despite many flattering offers, agreed to be acquired. He prefers to grow by hiring and writing software, which is what most of his neighbors in Silicon Valley would call a tech company, except this one happens to underwrite home loans.
The 2025 ranking that put Loan Factory at No. 2 in the United States arrived without a press blitz. The company posted it as a single image to LinkedIn. That is the personality of the place. There is a tendency among financial founders to treat every milestone as a parade. Nguyen treats his as a memo.
What is occupying him now is closing the gap to No. 1. He has said publicly that the goal is the top spot, and he has said it the way an engineer says a thing - flatly, with a date implied. Friends in the industry will tell you he is also rebuilding chunks of MOSO again, because the network has grown so quickly that the version of the software he wrote two years ago no longer fits the org chart. He keeps rewriting the thing. He keeps not announcing it.
“I built Loan Factory to give homebuyers the clarity they deserve and loan officers the tools they need to succeed.” - Thuan Nguyen
The biographical paragraph almost everyone writes about Nguyen starts in 1992 in Los Angeles. The accurate one starts earlier, in post-war Vietnam, where Nguyen grew up in the kind of poverty that does not appear in CEO press kits. He was 14 when he first tried to escape by boat. He was caught. He was put in solitary confinement in a dark underground cell, without food or water, for long enough that he has rarely spoken in detail about it since.
In 1992 he and his family landed in Los Angeles. He spoke no English. He worked two full-time jobs paying $4.25 an hour. He used the hours between to teach himself the language. The education that followed is the kind that doesn't need a press release: Orange Coast College, then UC Berkeley for a B.S. in Business with highest honors, then a master's at Berkeley in Information Management and Systems. Then Morgan Stanley. Then Silicon Valley.
And then a house. In San Jose, in his twenties, Nguyen bought his first home, walked through the closing process, and concluded that the mortgage industry was running on systems and conversations no engineer would have built on purpose. That was 2006. He founded Loan Factory the same year. He had no mortgage experience. He had a thesis: that the business was about software and clarity, in roughly that order.
For four years it was him, a phone, and a laptop. By 2010, working from his living room, he was clearing roughly $28,000 a month. He opened the first office. He hired a few people. He kept coding on the side. By 2013, the side project was the system. He called it MOSO. It is still the system today.
The growth curve that followed has the cadence of a chart that almost nobody believes the first time. In 2020, as the refi boom arrived, his loan officer headcount jumped roughly three hundred percent. In 2021, he became the No. 1 loan officer in the country. He kept the No. 1 spot in 2022, closing more than five thousand loans worth $2.46 billion. The Scotsman Guide rankings - the closest thing the industry has to a Forbes 500 for originators - put his name on top, by a wide margin, two years running.
By 2025, Loan Factory itself had climbed the broker rankings to second place in the United States, with more than two thousand loan officers scattered across the country, all running on the platform he wrote.
Bars are illustrative, not to absolute scale. Sources: Loan Factory, Scotsman Guide, HousingWire, NMP.
No English, two jobs at $4.25/hour, nights spent on textbooks.
San Jose. No prior mortgage experience. One office, one phone.
Word-of-mouth referrals carry the business. He opens the first physical office.
An internal tool. Then a system. Then a platform.
Loan officer headcount surges roughly 300%.
First mortgage broker in America to do it. #1 loan officer.
Holds the #1 originator slot for a second consecutive year.
2,000+ loan officers nationwide. The network keeps growing.
Most mortgage CEOs read dashboards. Nguyen reads diffs. The decision to build MOSO in-house in 2013, when every competitor was paying a vendor, is the single bet that explains the next decade.
Loan Factory exists because Nguyen walked through one mortgage transaction in San Jose and decided the whole business was broken. That is the only market research he has ever cited.
The HQ at 2195 Tully Road sits in the same corridor where he bought that first home. There is no Manhattan satellite, no Austin photo-op. The company is a Bay Area native that runs a national network.
Per Scotsman Guide rankings, two consecutive years at the top originator slot - by volume and by closed-loan count.
First U.S. mortgage broker to surpass two billion dollars in annual loan volume.
Loan Factory's proprietary digital mortgage platform - the engine behind the network.
Closed during the refi boom across two calendar years. The volume that put his name on the map.
Loan Factory ranks second-largest mortgage broker in America, with 2,000+ loan officers.
B.S. Business (highest honors) and a Master of Information Management and Systems.
HousingWire sat down with Nguyen to walk through how a Vietnamese refugee with a Berkeley computer-science background ended up as America's top originator - and where he thinks the next billion comes from.
The same number that sits on his loan officer page is the one tied to America's #2 brokerage. Most CEOs let their license lapse. Nguyen still closes loans on his.
The HQ has not migrated to a glass tower. It sits in the same San Jose corridor that radicalized him about mortgages in 2006.
Few mortgage executives in the country hold a master's in Information Management and Systems. None of them are also #1 originators.