Kimi Su calls herself âthe least mobile global mobility person ever,â and she means it as a fact about geography, not ambition. Born in the US, raised in Taiwan until six, in the Bay Area ever since, she now runs the full stack of immigration, mobility tax, and relocation at Sierra. She got here âby accident, and then on purpose.â
She was working with primates in animal welfare when her brother-in-lawâs aunt offered her a temp job at an immigration law firm âwith strict instructions not to stay.â âI made a career out of it instead.â
The paperwork could have stayed paperwork. It didnât. âI came to realize I was holding somebodyâs achievements and their ambitions in my hands, and that it was an honor and a responsibility to take good care of that.â She knows how that sounds. âItâs a romanticized way of looking at pushing paper, but there was a real person behind every petition, hoping Iâd do a good job on their behalf.â That feeling, she says, ânever left, and it carried me from immigration into mobility as a whole.â
01
Where a move actually breaks
Ask Kimi where relocations go wrong and she skips the horror stories for one word. âAlignment.â
âWhat are the expectations of the business? What are the expectations and the needs of the employee? How informed and aligned are all of your providers in getting this relocation through, meeting the businessâs needs while supporting the employee?â The failure mode is narrower than it looks. âWhere it fails is when someone has expectations and the experience doesnât deliver against them.â So the job, as she defines it, is âmaking sure everyone who needs to be involved is aligned every step of the way, and that everyoneâs expectations are realistic.â
02
Building the tools she wished she had
Kimi is not an engineer, which is exactly why this part of her story matters. She has started teaching herself to build small AI agents around the repetitive parts of mobility work. âBefore, if the workload kept growing, my instinct was, âOkay, do we need another headcount?â Now my instinct is, âCould an agent do this?ââ The point isnât cutting people. âNot because Iâm trying to replace people, but because so much of the work we do is administrative. If I can automate that, it frees me and my team up to spend our time on the strategic work and the human conversations that actually matter.â
It is how she approaches her own job now. âAnytime I find myself doing something repetitive, I ask, âShould I keep doing this, or should I build an agent?ââ The work she is comfortable talking about publicly is intentionally practical: taking admin off her plate, flagging what needs a human look, and giving her more time to partner with the business and support employees. The guardrails come first. âObviously, in HR you have to be incredibly careful. We work with sensitive employee information, so privacy and security come first.â
That restraint is what makes the story more interesting, not less. She is not pitching a grand theory of AI replacing mobility. She is doing the operator version: find the boring thing that steals time, build a small tool around it, and use the time you get back for the conversations a model should not be having.
03
The part an agent should never touch
For all of that, Kimi draws a hard line. âThis role is human first and it should remain that way. AI is never going to replace the phone call you make to an anxious new hire.â
The human work isnât only the emotional part. Itâs also âsitting down with business leaders and hiring teams, understanding what theyâre actually trying to accomplish, and giving them practical recommendations for how to get there.â They could ask a model. âTheyâre not going to get the tried-and-true answer theyâd get from an in-house expert who knows the company.â
04
Watching someone build something real
For all the process, the part Kimi keeps coming back to is the person. âThe piece we own can be extremely important: the founding team member youâre sending into a new country to build. Thatâs super meaningful.â
And she gets to watch what happens next. âWe send someone abroad, they build something real, and when they come back, they come back into a leadership position because of the work they did out there.â When people press her on the ROI of mobility, that is where she points. âIn a growing company, the ROI is straight business opportunity combined with personal growth for that individual.â
05
Why sheâs betting on it
Kimi hears a lot of AI pitches; Gullie landed differently. âWhat got me was that Gullie was really turning relocation on its head and going AI first. I had just never heard of that.â
Her conviction is that the bet matches the people she moves. âIf someoneâs job is building AI agents, an AI-first relocation experience gives them the right picture of their new company from the very first touchpoint.â She puts the point plainly. âOnboarding starts before day one. It starts with the move.â
