Calvin Hamilton

About

I'm an entrepreneur based in Philadelphia, PA.

Over the last decade, I've helped build some of the biggest brands on social media.

I co-created the GaryVee Content Model at VaynerMedia when I was 18; a few years later, Ryan Serhant acquired my agency so I'd come build his social team.

There is no algorithm "hack." There's only better and more, and both are operations problems.

That's why I'm building engine.fm and Dosto: companies that take the same playbook I've used for years and turn it into a system.

Before this, I was doing it with:

Apple
JPMorgan Chase
CAA
Watches of Switzerland Group
Johnson & Johnson
Entrepreneur
VaynerMedia
SERHANT.
Ryan Serhant
Sell It
ProCap Financial
Poppi
Empathy Wines
K-Swiss
Extell Development
SJP Properties
Rhomberg
Luxury Presence
Breezy
SoaR Gaming

Apple

2017 · VaynerMedia · YouTube Analyst

Helped strategize and launch the Apple Support brand and content channel on YouTube. One of the first big projects I worked on after joining VaynerMedia out of high school.

JPMorgan Chase

2018 · VaynerMedia · YouTube Analyst

Chase sponsored a branded episode of the #AskGaryVee Show, and I owned the production side of it under a senior team: sourcing applicants from Gary's audience across the Tristate area, narrowing a few hundred submissions down with the Chase brand team, building the studio experience at VaynerMedia's HQ in NYC, and managing the run-of-show the day Gary and Brent Reinhard filmed with the finalists. Then worked through post-production, client approvals, and distribution.

CAA

2018 · VaynerMedia · Paid Social Media Manager

Ran all paid social for Michael Ovitz's memoir, Who Is Michael Ovitz?: campaign strategy, creative direction, in-platform buying, and client reporting on a $50–80K monthly budget. Reviewed by the Wall Street Journal and New York Times, endorsed by Marc Andreessen and Ben Horowitz, and named Forbes' best business book of the year.

Watches of Switzerland Group

2025–2026 · rezy · Fractional Head of Social Media, US

Led social across Watches of Switzerland USA, Mayors, and Betteridge. We helped manage campaigns with Rolex Certified Pre-Owned and Hodinkee; produced custom content for a Madison Square Garden billboard during the Knicks' playoff run; filmed, edited, and distributed event recaps with the Porsche Design team; ran collaborative content with Analog Shift for New York Watch Week; and handled live social coverage of fifteen events. Most of the job was the less sexy half: managing share-of-voice commitments and reporting for partners like Rolex, Patek Philippe, TUDOR, Cartier, and Omega, and working inside embargos and brand standards. Luxury retail doesn't reward clever. It rewards operators who don't drop things.

Johnson & Johnson

2018 · VaynerMedia · YouTube Analyst

Multi-step audit of the Johnson & Johnson Baby YouTube channel strategy. One-time sprint.

Entrepreneur

2021 · createcontent.io · Content Strategist

Built social content for Jason Feifer, Editor-in-Chief of Entrepreneur, on LinkedIn and Instagram; mostly repurposing his existing writing into GIFs and carousels. He posted a testimonial to his Instagram saying he'd recommended us to others and felt invested in my success, because we made it that easy to work with us.

VaynerMedia

2017–2019 · YouTube Analyst → Social Media Analyst → Social Media Manager

Cold-emailed Gary after graduating high school and joined as a paid intern at 18. I was the youngest of 800 employees. Started on Gary's YouTube, added Facebook a month later, then his "First In Line" text community. In 2018 I co-created the GaryVee Content Model, took over his blog copywriting when his writer left, and later managed his $30K/mo paid social budget, acquiring podcast listeners at $0.07 and Instagram followers at $0.02. I left in March 2019 to start my own agency, Engineer Influence.

SERHANT.

2022–2024 · Director of Social Media

Joined through the acquisition of my agency, Engineer Influence, to own social and content strategy for Ryan, the SERHANT. brand, New Development, and clients. Launched Ryan's second YouTube channel, later rebranded as Sell It, and took it to 200K subscribers in 12 months. Took over his LinkedIn in partnership with notus, generating 17M impressions in year one and 7 seller leads, 3 of which converted to $57M in listings and $1.2M in brokerage revenue. Coordinated collaborations with GaryVee, Iman Gadzhi, Ryan Holiday, and Tom Bilyeu, and worked alongside World of Wonder on content strategy for Owning Manhattan. The part I didn't expect: hundreds of one-on-one strategy consultations with agents and developers, which taught me more about what actually blocks people from making content than any campaign did.

Ryan Serhant

2018; 2019–2020; 2022–2024 · Juice / Engineer Influence / SERHANT. · YouTube Strategy Consultant → Paid Social Lead → Director of Social Media

Launched Ryan's YouTube in 2018 and managed publication for select content, including his most-viewed video ever, now past 19M organic views. Later took over all of his paid social through Engineer Influence, growing his Instagram from 850K to 1.5M in 16 months, from ~7K to 40K+ new followers a month on a $3K monthly budget.

Sell It

2019–2020; 2022–2024 · Engineer Influence / SERHANT. · Digital Marketing Strategist → Director of Social Media

Strategized, launched, and marketed the Sell It Like Serhant course launch, selling $500K in two weeks. It became the top-selling course in Thinkific's history and the top-selling real estate sales course of all time, per Yahoo Finance and Business Insider. Years later I came back to the brand through SERHANT., overseeing organic creative and distribution for Ryan's course content and speaking seven times at Sell It events, from 20-person masterminds with the country's top producers up to a 300-agent conference. Those events averaged an 87 NPS, which is high for any industry and unheard of in real estate.

ProCap

2026–Present · rezy · Head of Personal Brand, Anthony Pompliano

Anthony's entire personal brand: every channel, every piece of content. Built a clips network from zero to 1.5M monthly impressions in the first month, and took his Facebook page from zero to 2.5M in the same window. Lifted his organic impressions 124% and follower growth 289% against baseline within two months. Also recruited his videographer and Silvia's Head of Growth, and managed collaborations with Barstool's KFC, Dan Ives, and Peter Schiff.

Poppi

2020 · NOISE · Paid Media Manager

All paid social on Facebook and Instagram at a $30K monthly budget, driving consumers to purchase at Whole Foods, Wegman's, and Sprouts.

Empathy Wines

2019 · VaynerMedia · Paid Social Media Analyst

Managed paid social for Gary's DTC wine brand, later acquired by Constellation Brands in 2021.

K-Swiss

2018–2019 · VaynerMedia · Social Media Analyst

Content creation and social management across the GaryVee 001, 002, and 003 sneaker collaborations.

Extell Development

2019; 2022–2023 · NOISE / SERHANT. · Paid Media Manager → Director of Social Media

First ran paid social for One Manhattan Square through NOISE. Re-engaged years later at SERHANT. to oversee the campaign for the Penthouse at Central Park Tower, the highest residence in the world, listed at $250M: brand and messaging, landing page, event and collaboration strategy, content, and influencer partnerships. The campaign drove 300M+ organic impressions and multiple billionaire showings.

SJP Properties

2023–2024 · SERHANT. · Director of Social Media

Led social, content, and marketing for 200 Amsterdam, billed as the newest addition to Billionaire's Row, including the campaign launch film and dedicated channels for the building.

Rhomberg

2020–2021 · Engineer Influence · Lead Content Strategist

Hubert runs one of the largest construction groups in the DACH region. I built his LinkedIn presence from scratch, hitting hundreds of thousands of impressions in the first month. The metric he cared about was different: people in his industry started bringing up his posts when they met him in person. I eventually passed the account to my old business partner Marvin Sanginès, now CEO of notus. They still have him as a client today.

Luxury Presence

2026–Present · rezy · Lead Content Strategist, Malte Kramer

Own Malte's short-form content including strategy, scripting, and publication, plus directing the videographers and editors through production and post.

Breezy

2025–2026 · rezy · Fractional Head of Social & Executive Creative Director

Ran content end to end for James Harris and Breezy, his AI startup co-founded with Nick Molnar of Afterpay. We made hundreds of videos, generating 7M+ impressions and helping drive 10K signups pre-launch. Post-launch, Breezy has been named one of the fastest-growing real estate AI platforms by Inman and HousingWire.

SoaR Gaming

2018–2020 · Independent · Advisor

Advised SoaR's COO and Executive Creative Director on content, expansion, and monetization strategy in the years leading up to their acquisition by Eleven Gaming.

Early Life

I was born in Phoenix, Arizona in 1999 and grew up online. By 11, I was making gaming videos on YouTube, teaching myself how to do basic video editing and graphic design. At 13, I made my first dollar on the internet by editing videos for other creators (I got paid $25 for what ended up being like 10 hours of work, but I was pumped). Shortly thereafter, I started doing remote work for free at a YouTube multi-channel network based in London, which is where I became obsessed with how content, distribution, and monetization actually work behind the scenes.

At 17, I became the Director of Channel Operations at ScaleLab Gaming, then one of YouTube's largest MCNs. A year later, I sent a cold email that landed me a role on Team GaryVee as Gary Vaynerchuk's Social Media Manager, making me the youngest employee at VaynerMedia. That job changed my life, completely rewiring how I think about brand, leverage, and the internet.

Entrepreneurship

After almost two years at VaynerMedia, I left to build my own thing. In 2019, I co-founded an agency called notus with Marvin Sangines, which we grew working with various founders and brands across Europe and the U.S. In 2020, Marvin and I decided to move in separate directions, which is when I rebranded the company to Engineer Influence.

Within about ~2 years, I grew the company from zero to nine FTEs. In June 2022, SERHANT. acquired the agency, and I joined as Director of Social Media, overseeing Ryan Serhant's personal brand, the brokerage's main channels, new development projects, and select projects for Sell It (fka "Sell It Like Serhant"). That season gave me a crash course in luxury real estate, larger-scale in-person content production, and building media-style systems inside a high-growth company. I ultimately decided to leave SERHANT. in February 2024 to start something new.

In 2021, I also launched a small side hustle called createcontent.io: a cost-effective design service producing quote cards and carousels for creators, coaches, and executives on LinkedIn. The business grew to roughly $5K in MRR with 60–75% margins and had real legs, but I ultimately shut it down once my responsibilities at SERHANT. scaled and I no longer had the bandwidth to operate it.

Today, I have a small portfolio of internet businesses. Check out the "Projects" folder to see more.

Now

I run engine.fm, a podcast-driven personal branding company for B2B entrepreneurs and executives. We build "content engines" around founder-led podcasts and use AI-enabled workflows to turn conversations into a full ecosystem of clips, posts, and written content. We've worked with founders and executives from companies like Kaizen Equity, Spark Offer (acquired by Auction.com), Owl Ventures, and more.

Simultaneously, I'm working on Dosto with a couple of friends — it's a conversational ghostwriting studio that specializes in LinkedIn content for coaches, consultants, founders, and executives.

I think of all of this as one portfolio: some things are cash flow, some are experiments, and a few are long shots that could become very big (or nothing at all).

Projects

engine.fm — Podcast-driven content systems for B2B founders.
Dosto — A conversational ghostwriting studio.
rezy.io — Recalibrating...
x2socials.com — Repurpose your X posts for social media.
inputs.so — An operating system built for solopreneurs and small teams.
Engineer Influence — Influence isn't magic, it's mechanics.
createcontent.io — Design, without the design team.

Personal Stuff

Growing up, I was never a particularly good student. Not because I wasn't capable, but because I didn't find it interesting. So, gaming and YouTube quickly became my outlet. The name "Rezy" was one of my original Xbox gamertags.
After seven years in NYC, I relocated to Philadelphia in 2024, though I'm still in NYC very regularly for friends, clients, and collaborations.
Outside of work, I read a lot (mainly philosophy and business), lift weights, run, bike, and treat my health as non-negotiable (with the exception of the occasional cigar). I also play chess, enjoy writing, and try to use travel as a way to reset my thinking and gather new inputs.
In an effort to push myself and try new things, I ran the Philadelphia marathon in 2025, finishing in 3:57:41. It was hard... and boring... not sure if I'll do another.
I love watches and have a humble collection that includes a couple of Grand Seikos, a vintage Doxa from the 1930s, and a few other fun pieces. Chen's Watch and Yan's Antique Jewelry in Chinatown are a couple of my "go-to"s for vintage.
Professionally, I'd say that I'm primarily optimizing for a long, interesting career — compounding skills and relationships over decades. Personally, I'm trying to do it without losing sight of what matters: health, family, close friends, and being kind.