Thoughtful culture is designed. Not accidental.
Thoughtful culture is designed. Not accidental.
Thoughtful culture is designed. Not accidental. Thoughtful culture is designed. Not accidental.
Why Rösalu studio?
Because most People Operations consulting forces companies to choose between depth and intimacy.
Big firms have senior people, but they don't put them on your account — they put associates on it. Solo generalist consultants are accessible but often haven't operated at the scale you're trying to reach. Hiring in-house is an enormous commitment when you're still figuring out what shape your People function needs to take, and what kind of leader you ultimately need to recruit.
Rösalu Studio is built differently. Engagements are led by a senior People Operations practitioner with more than a decade of 0→1 builds, acquisition transitions, multi-state compliance work, and enterprise succession planning across organizations of 6 to 450 people. The specialists we bring in for implementation work are curated, not subcontracted. The price points are public. The deliverables are concrete. The work is done with you, not presented to you.
You get the senior thinking, you get the hands-on work, and you get the kind of attention a fifty-person agency can't promise and a solo generalist can't deliver.
If you're a founder, COO, or Head of People at a company between 10 and 100 employees who's looking at your HR and quietly wondering when the cracks will show — Rösalu Studio is built for that exact moment.
STUDIO STORY
I founded Rösalu Studio in 2021 on a simple bet: that the most thoughtful People Operations work in a company doesn't have to come from a forty-person consultancy or a six-figure engagement. It can come from one senior practitioner with deep operational range — and a small, intentionally curated network of specialists when the work calls for it.
I spent the decade before that building People functions inside fast-growing companies — from being the first HR employee at a now-public marketplace company to leading a global People function through a full acquisition. The pattern I kept seeing: founders and small leadership teams trying to hold together HR systems that had outgrown the scaffolding they were built on, and a market that mostly offered them two bad options. Hire a big consultancy that delivered slide decks. Or hire someone in-house too soon, before the company knew what to look for.
Rösalu Studio exists for the third option. Senior, hands-on, founder-led. Designed to do the work, not just frame it. Built to serve organizations between 10 and 100 people who deserve real People Operations partnership at the pace and scale of the business they actually have — not the business a consultant imagines they should be.
We work with companies around the world to build the systems that hold people together when growth makes everything else feel fragile.
FOUNDER
I'm martyse Rosario, founder of Rösalu Studio.
For more than a decade, I've built People Operations from the ground up — across B2B SaaS, technology, life sciences, retail, manufacturing, and logistics. I joined a now-public marketplace company as its first HR employee at ~20 people and helped scale the People function to support 150+ corporate employees and 1,000+ contractors across all 50 states. I joined a venture-backed tech company as employee #6 and built the global People function through a full acquisition. I've supported organizations as small as six people and as large as 450 across multiple facilities and continents.
Along the way, I built things that moved real numbers. I designed performance systems that lifted performance 17% quarter-over-quarter. I rebuilt onboarding programs that improved 90-day retention by 83%. I implemented HRIS platforms that cut onboarding time by 85% and improved turnover by 45%. I led succession planning for organizations of 450+ employees across thirteen facilities. I helped a life sciences co-working network drive $1.2M in revenue growth and 25% membership expansion through better people and operational strategy.
I've sat in rooms where the right call protected someone's career, and rooms where the wrong system cost the company a year of progress. Both shaped how I work. My practice lives at the intersection of five tightly connected disciplines: People Ops strategy and systems design; performance and manager enablement; compensation and job architecture; employee relations and investigations; and DEI and team building.
I started Rösalu Studio because the kind of senior People Ops partner I would have wanted to hire as an internal leader — thoughtful enough to design real systems, small enough to actually care about the business, senior enough to be in the room when it counts — didn't exist for companies between 10 and 100 people. So I built it.
Rösalu Studio works with founder-led teams who know their HR is held together by string and good intentions, and who need a partner who can see the whole system, name what's broken, and design the path forward without bringing in a Big Four-sized engagement to do it. We work in two-week diagnostics, in fractional engagements, and in the operational rebuilds that follow. Based in Los Angeles. Working with teams across the US, UK, and EU.