There is a pleasing absurdity in the phrase “chief executive of a dance party.” A party is meant to appear spontaneous. A chief executive is paid to suspect spontaneity, price it, staff it and make sure it happens again at 6:30 on Thursday. Devon Branch-Elliman occupies that contradiction at 305 Fitness, the New York-born dance-cardio company where live music, choreography and collective permission meet. The customer is invited to let go. Her job is to hold the pieces together.
Branch-Elliman’s route to the room was not choreographed in advance. The public record begins far from mirrored studios and DJ booths, in the stern vocabulary of energy security. In 2005, her name appeared among the editors of proceedings from an international conference in Prague. Six years later, an American Nuclear Society program listed her as a City College of New York speaker on grid-size batteries and gas energy-storage systems.
Then came Harvard Business School, where she studied from 2014 to 2016. A later public record placed her as a manager at Urban Electric Power, a New York battery company. By 2023, her title had changed again: creative director at Roveroo LLC, listed among delegates at a children’s entertainment summit. Energy infrastructure, an MBA, batteries, children’s media, dance cardio. LinkedIn was not designed for this plot.
The transferable subject was energy
It is tempting to neaten this résumé by insisting that it was always about energy. Batteries store it; dancers spend it; executives spend rather more than they planned. The metaphor is tidy enough to be suspicious. Still, Branch-Elliman supplies part of the bridge herself. Her public introduction says she builds and grows businesses that make life better, then describes her as “a scientist at heart.”
“A scientist at heart.”Devon Branch-Elliman, in her public professional summary
The phrase matters because science is less a job title than a method. Observe what is happening. Separate signal from noise. Change one thing. Look again. A fitness studio provides abundant noise, much of it set to a bass line. Yet the business beneath it is a system: instructors, training, schedules, leases, bookings, service, technology, brand and the delicate chemistry of a room full of strangers.
305 Fitness presents its classes as a meeting of dance cardio and nightlife. Its broader business also includes instructor certification, private events, digital classes and franchising. Each extension creates the operator’s favorite problem: how to repeat an experience without flattening it. A class needs enough consistency to earn trust and enough life to avoid feeling manufactured. A franchise needs a recognizable pulse in a room the central office cannot personally run. Certification turns charisma into something teachable, then asks the teacher not to sound like a manual.
A company built on useful contradictions
Boutique fitness is full of opposing demands. The room should feel wild, but it must be safe and on time. The instructor should be unmistakably themselves, but also unmistakably part of the brand. Customers want novelty and familiarity in the same 55 minutes. The company sells escape while keeping careful track of attendance.
This is where a circuitous career becomes an operating advantage. Technical work trains attention on constraints. Business school supplies a language for capital, incentives and organizations. Creative direction teaches that an experience can be coherent without being uniform. None of those disciplines provides a ready answer for the next studio schedule or instructor cohort. Together, they make a respectable kit for asking better questions.
A career in five stops
Branch-Elliman’s public comments are scarce, which makes one small exchange unusually revealing. Asked about an intention, she wrote that she was listening more actively instead of multitasking and turning off her phone. The parenthetical joke was that this would also reduce the number of vacation photos. It is a modest answer, practically anti-executive in an online culture of loud principles. It names attention as something that must be protected.
Listening is easy to praise and inconvenient to practice. In an experience business, however, it is basic equipment. A class is live feedback with music. Instructors read confidence, confusion and fatigue without halting the beat. Managers hear what customers say and what attendance patterns say more bluntly. A leader hears the founder, the team and the balance sheet, three parties rarely singing the same verse.
The operating idea
A repeatable experience cannot be built by removing personality. It is built by giving personality dependable support: training, standards, timing and room to improvise.
Taking the controls without erasing the founder
The transition at 305 Fitness became public through its founder, Sadie Kurzban. Announcing a new chapter running a creative arts camp in Maine, Kurzban said she would remain involved with 305 as a founder and instructor. She also said Branch-Elliman was in charge and praised how she was leading the company. It was a short social post, but it described an arrangement that many founder-led businesses struggle to reach: continuity without confusion.
Founders do not merely hold jobs. They often serve as a company’s creation story, taste and emotional weather. A successor cannot replace that by declaring a new forecast. The more practical task is to distinguish the founder’s essential contribution from every habit that grew around it. Preserve the promise; make the organization less dependent on any single person’s presence.
Branch-Elliman had already been identified publicly as the company’s chief operating officer before appearing as chief executive. The change in title fits the classic operator’s passage: first make the machine work, then become accountable for where it is going. Florida corporate filings now list Devon B. Elliman as 305 Fitness’s president, secretary and treasurer as well. Glamour, as usual, has paperwork.
The customer gets the party. The operator gets the recurrence.
That recurrence matters because 305 is more than a room in New York. Its website offers classes beyond its home city, at-home participation, private parties, instructor training and the prospect of opening a studio. The brand’s public ambition is not merely to stage workouts. It also speaks about widening access to group fitness and entrepreneurship through certification. Scaling that proposition requires a leader comfortable with both experience and infrastructure.
The untidy résumé earns its keep
Modern career advice likes a clean narrative because clean narratives are easy to sell. Choose a lane. Accumulate expertise. Make every move look like the inevitable next move. Branch-Elliman’s history suggests another model: keep the method and change the material. A person can leave an industry without discarding what it taught them.
Energy work deals with capacity, storage, transfer and loss. Creative work deals with attention, feeling, timing and form. Operations turns both into daily questions. Where is the organization’s capacity? What is being lost between intention and delivery? Which constraint is real? What must happen in sequence? Where can a human being improve a system, and where should the system get out of the human being’s way?
There is evidence, too, of an interest beyond commercial machinery. Branch-Elliman is listed in the directory of HBS Alumni Angels of Greater New York. In 2026, HBS Community Partners thanked her among alumni who contributed business talent to community organizations and social-enterprise work. She has publicly recommended Adventure Finance, a book about alternative funding for impact and mission-driven organizations. These are small signals, but they rhyme with her stated interest in businesses that make life better.
At 305 Fitness, “better” arrives in intentionally bright packaging. There is music. There are colors with no interest in whispering. There is the peculiar democratic comedy of choreography, in which nearly everyone is briefly wrong together and survives. A class can create the temporary relief of joining a crowd without surrendering one’s individuality. That feeling is hard to measure, easy to recognize and extremely easy to spoil.
Teaching the room to travel
The company’s instructor-training offer gives that problem a practical form. A single magnetic instructor can fill a room; a durable organization must explain what the instructor is doing well, teach the principles to someone else and leave enough space for the second person to be convincing in their own voice. The distinction is important. Imitation can reproduce gestures. Training has to reproduce judgment.
The same is true of private events, digital classes and franchised studios. Each format changes the room. A wedding party is not a weekday class. A laptop audience cannot return the instructor’s attention in quite the same way as a front row. A studio owner in another city has local knowledge that a New York office does not. The brand must travel, but it cannot arrive as luggage nobody is allowed to unpack.
This is the quiet significance of Branch-Elliman’s combination of operating and creative experience. Operations can define the rails. Creative direction can recognize when the train needs a window open. The useful standard is not perfect sameness; it is a reliable promise. People should know the spirit of the experience they have chosen, even when the playlist, instructor and city change.
So the scientist’s work continues. The apparatus has changed. Instead of grid storage, the system now includes instructors, franchise prospects, playlists and rooms of people deciding whether to move more freely than they did an hour earlier. The chief executive stays mostly outside the frame. If the system is working, that is precisely where she belongs.