Tammy Sun has spent much of her working life inside machines built to reach millions of people. The White House was one. The Federal Communications Commission was another. Evernote, the note-taking company that once seemed determined to remember everything on humanity’s behalf, was a third. Then came Carrot, the company Sun founded in 2016 to make fertility and family-care benefits easier for employers to offer and for people to use.
On paper, the route looks like a collection of sharp turns: political campaigns, public-policy organizations, a strategic communications agency, federal service, Silicon Valley partnerships, healthtech. Sun sees more continuity than collision. Government and technology, she has said, can both act as platforms. Each can bring a service to a great many people. Each can close a gap at scale. Each also has its own maddening dialect of rules, incentives and gatekeepers.
Her gift has been learning the dialect without mistaking it for the point. Institutions matter because of what they can do for a person at the other end. That idea became especially concrete at Evernote, where Sun encountered a costly gap in workplace coverage. Her employer tried to help, but the existing benefits system had no suitable answer. She left the company and began studying the problem.
A policy operator walks into Silicon Valley
Sun was born in Taipei and spent most of her childhood in New Jersey. She graduated from New York University and attended the London School of Economics. Her early career placed her near the machinery of national politics: work in the White House, campaigns, public-policy groups and the Clinton Foundation. She later founded Let It Shine, a New York strategic communications agency.
In 2011, the FCC named her communications director and head of its Office of Media Relations. It was the sort of job where a sentence could travel quickly and an imprecise one could travel faster. Sun directed communications for an agency wrestling with broadband, competition and a changing technology landscape. The post demanded translation: regulation into ordinary language, technical disputes into public meaning, institutional action into a story people could follow.
At Evernote, where she became director of partnerships, the nouns changed but the work retained a familiar shape. Partnerships are diplomacy with dashboards. They require an eye for competing interests, a tolerance for long negotiations and the ability to imagine a product beyond one organization’s walls. Sun was accumulating an unusual founder’s apprenticeship. She had learned how government explains itself, how coalitions hold together and how technology travels.
The people with the problem kept leaning in
When Sun began talking about a dedicated fertility benefit, many investors filed the idea under niche. This is one of venture capital’s tidier evasions. “Niche” sounds analytical while requiring no arithmetic. Yet the HR and benefits leaders Sun met reacted differently. They wanted to talk. They recognized the gap. They could picture employees asking for help and employers struggling to supply it.
Sun chose her signal. Investors could assess the category, but customers lived with the consequences of the missing product. She worked with reproductive endocrinologist Asima Ahmad, joined Y Combinator and built Carrot around a broad eligibility model. Employers could configure a benefit, members could get guidance and financial support, and the design would account for family-building paths that traditional coverage often excluded.
The company announced a $3.6 million seed round in 2017. By then, the argument had acquired a product and the product had acquired customers. A reported $75 million Series C followed in 2021, taking total funding to roughly $114 million. Carrot says it now works with more than 1,000 employers, health plans and health systems and serves millions of members around the world.
The striking part is not merely that the niche grew. It is that Sun’s original reading depended on distinguishing between two kinds of skepticism. One came from people deciding whether the business fit an investment pattern. The other would have come from people deciding whether it solved their problem. She heard plenty of the first and much less of the second.
The founder’s filter: rejection is information, but its value depends on who is speaking. Sun’s public advice is to understand the problem, the solution and the customer closely enough to know which no should change the company and which no should merely lengthen the day.
Flexibility survives the first meeting
Sun has recalled an early meeting with an HR leader where the central lesson was flexibility. One size would not fit every customer. It is the sort of observation that earns unanimous nods and then quietly loses every fight with a roadmap. At Carrot, she says, it endured as a product principle.
The reason becomes obvious at global scale. A benefit must pass through different employers, insurance structures, provider networks, currencies, laws and cultures. A plan that looks complete from one headquarters may arrive elsewhere missing a door. Scale, in this business, is less like stamping identical parts and more like writing a score that different orchestras can actually play.
Four rooms, one operating instinct
- Politics and policy: learn how institutions move.
- FCC: translate complex systems in public.
- Evernote: make partnerships extend a product.
- Carrot: connect institutions around a missing benefit.
Carrot’s expansion has therefore been both geographic and conceptual. The company began in employer-sponsored fertility benefits and widened its platform across family-building and hormonal health journeys. It added partnerships with insurers and health systems, and built services around navigation, provider access, payments and plan design. The corporate plumbing is unglamorous. It is also where a benefit either becomes usable or remains a glossy paragraph in an employee handbook.
Sun’s language repeatedly returns to access, affordability and inclusion. Those words can become corporate wallpaper if no operating choice follows. In Carrot’s case, they shaped eligibility beyond age, sex, sexual orientation, gender identity, marital status and geography. They also pushed the company toward multinational delivery, where inclusion must survive currency conversion and local regulation.
A company distributed, a founder relocated
Carrot’s teams are distributed across more than 40 states and dozens of countries. Sun herself moved to Bentonville, Arkansas, a place better known in corporate geography for Walmart than for venture-backed care platforms. The relocation suits the company she built: global ambitions without a requirement that wisdom reside within commuting distance of Sand Hill Road.
Bentonville also sharpens the contrast in her story. Sun once worked at the center of federal power, then in Silicon Valley during a period when software companies treated lavish office life as evidence of destiny. She now leads a distributed company from Northwest Arkansas. The through-line is reach, not postcode.
Recognition followed the growth. Entrepreneur included Sun and Ahmad among its 100 Women of Influence in 2022. Carrot appeared on the CNBC Disruptor 50 in 2023. Sun has spoken at gatherings ranging from HLTH and Fortune’s Most Powerful Women to professional medical conferences. In 2024, a Northwest Arkansas business publication placed her in its C-Suite class.
Her communications background remains visible in the way she frames the market. Sun speaks about a benefit becoming as ordinary as medical, dental or vision coverage. The comparison does several jobs at once. It gives an unfamiliar category a familiar shelf, tells employers where it belongs and quietly sets a test for progress. The ambition is easier to measure when it can be pictured inside an enrollment portal. For a founder operating amid clinical complexity and intimate decisions, that plainness is useful. It keeps the public argument anchored to a recognizable piece of workplace infrastructure.
Awards make tidy milestones. Company building remains disorderly. A platform like Carrot sits between parties with different budgets, vocabularies and definitions of success. Members want clarity and support. Employers need a benefit they can explain and administer. Providers work within clinical and regulatory constraints. Health plans demand measurable outcomes and cost discipline. The founder’s job is to keep the machinery pointed toward a human result.
The usefulness of one yes
Sun’s favorite founder advice is admirably short on incense. Start now. Stay close to the customer. Know the problem and the solution. Build resilience. One investor can be enough. These are not instructions for avoiding difficulty. They are instructions for choosing which difficulty deserves attention.
Her own career helps explain the practicality. Politics teaches that coalitions are assembled, rarely discovered whole. Communications teaches that the listener decides whether the message worked. Partnerships teach that mutual interest needs a structure. Leadership teaches that scale magnifies ambiguity unless somebody keeps returning to first principles.
Carrot grew because Sun found a gap, but also because she understood the organizations surrounding it. She did not need every investor to recognize the market at once. She needed customers who felt the problem, colleagues who could build across disciplines and enough capital to keep going. The famous startup appetite for disruption can be theatrical. Sun’s method feels closer to patient institutional carpentry.
The result is a company whose ambition can be stated in an ordinary workplace vocabulary: make a difficult benefit common, usable and broad enough to reflect the people it serves. A decade after Carrot’s founding, that project continues. So does the early lesson. When the room divides between people dismissing a need and people asking when they can have the solution, a founder should notice who is leaning forward.