Becoming Big Sis

We’ve led creative work from both agency and brand-side and know how easily good ideas get diluted. Big Sis exists to prevent that. Our role is to help brands see clearly, decide confidently, and make work that actually reflects who they are — not what trends say they should be.

Over several years co-leading creative, product design, and studio teams at a growing tech company, we often talked about building something of our own.

Big Sis is that something, allowing us to collaborate side-by-side, feed off each other’s ideas, and bring shared values and honed instincts to everything we make. The spirit and strength of our partnership is something we're proud carry through to the brands we work with.

Erin Anstett

Founding Partner

A literal big sister. A lifelong maker driven by instinct and curiosity. Music, design, and space-making sit at the center of my work and life. I’m drawn to potential.

I came up through design, art directing agency-side before becoming a VP-level Creative Director running an in-house studio at a tech company. Agency life taught me how to make smart, memorable work. Brand-side taught me how to move fast, lead teams, and build user-centered creative systems that scale. From co-founding a music venue to building a dog park to launching a photography studio inside a tech company, I see a need, build the team, and bring it to life.

Jason Mann

Founding Partner

Chicago-born and raised, I’ve been at home in the Midwest since day one. I love the seasons, the food, and the genuine kindness that defines the people here. From my early days as an agency Jr. Copywriter to my recent role as an in-house VP, Creative Director, I've picked up a wealth of experience that has shaped how I approach work and live my life. 

I’m motivated by creative problem-solving and the challenge of helping ideas find their footing. It's how I’m wired. That same creative spirit also shows up beyond the work, whether it's in the kitchen, on the tennis court, at home or wherever else I find balance.

In good company

Our collective experience has spanned everything from community mainstays to iconic, international brands. What’s stayed consistent from one project and partner to the next is our focus on delivering thoughtful, bold creative that leads with clarity and confidence.

  • Jason and Erin were the backbone of the creative engine that helped us scale to over 10M active users. From product design, to user lifecycle journeys, to Super Bowl commercials, they executed time and time again.

    —Birk Cooper Chief of Staff at Fetch Rewards

  • Erin is an exceptional creative—thoughtful, receptive, and gifted at connecting ideas and aesthetics. She elevates every project with empathy and clarity, and working with her was always a pleasure.

    —Ignacio Godoy Partner & Executive Producer at Buda.tv

Enough about us

Now we'd love to know a little about you. Let's start the conversation with who you are, how we get in touch and what you're hoping to get out of working with Big Sis.