About Us

we don't do average.
we do growth.

Seller Splash is a New York E-commerce agency built on two pillars: full-service marketing that drives revenue, and marketplace tools that put sellers in control — sharper listings, deeper insights, and AI-powered advertising. We never settle for stable results — every campaign, every tool, every decision is engineered to push harder.

What We Do

two pillars, one mission

We're not just an agency. We're not just a tool. We're both — and that's what makes us different.

Marketing Services

Full-service campaign management across Google, Meta, TikTok, Bing, and Walmart. We build the strategy, launch the campaigns, optimize relentlessly, and scale what works. Your growth is our job — we show up every day to push it further.

PPC campaign management
Conversion rate optimization
Creative strategy & testing
Real-time performance reporting

Marketplace Tools

Two tools, one mission: help marketplace sellers win. Our Marketplace Management tool sharpens your listings and surfaces the insights that drive smarter decisions. Our AI Advertising tool builds, optimizes, and scales campaigns automatically. Walmart is live now, more platforms on the way.

Enhanced listings, health scoring & competitor insights
Inventory visibility and performance analytics
AI Advertising — campaigns built, optimized & scaled automatically
Hands-off growth across marketplaces

Our Story

built by operators,
not theorists

Seller Splash started because we were tired of watching brands waste money on agencies that delivered dashboards full of vanity metrics and campaigns that went nowhere.

We've managed millions in ad spend. We've seen what works and what doesn't. We've watched algorithms change, platforms crash, and hype cycles fail. The brands that win aren't the ones chasing trends — they're the ones with fundamentals so strong that no algorithm update can shake them.

That's what we build. Not flashy campaigns that look good in a pitch deck. Campaigns that make money. Tools that scale automatically. Results that compound month after month.

We're based in New York because this city doesn't tolerate average. Neither do we.

Meet the Founder

Shlomie Spielman

Founder•New York, NY

Seller Splash was founded by Shlomie Spielman — an E-commerce operator who built the agency he wished existed when he was scaling brands himself.

After years of managing millions in ad spend across Google, Meta, TikTok, and marketplaces like Walmart, Shlomie kept running into the same problem: agencies optimized for their retainer, not the client's P&L. So he built Seller Splash to do the opposite — obsess over client revenue, reject vanity metrics, and ship AI-powered tools that do the work most agencies charge for.

Every strategy, every campaign, and every tool Seller Splash ships is signed off with the same standard: would I run this on my own brand?

How We're Different

what you won't get from us

✗

Vanity metrics that hide losses

We report on revenue, ROAS, and profit — not impressions and reach that mean nothing to your bottom line.

✗

Recycled strategies from a playbook

Every client gets a strategy built around their margins, their categories, and their growth goals. Not a template.

✗

Settling for stable performance

Stable means stagnant. We optimize for growth every single day. If it's working, we scale it. If it's not, we kill it.

✓

Radical transparency

You see everything we see. Real numbers, real dashboards, real conversations about what's working and what isn't.

✓

Month-to-month. Earn it every month.

No long-term contracts. We believe if we're doing our job, you'll stay. If we're not, you should be free to leave.

✓

AI + human expertise combined

Our AI runs 24/7 optimization. Our team provides the strategy, creativity, and judgment that AI alone can't replicate.

Our Values

what drives every decision

📊

Data Over Opinions

We don't guess. Every decision is backed by data, every hypothesis is tested, and every result is measured. Feelings don't scale — numbers do.

🤝

True Partnership

We operate as an extension of your team. Your P&L is our P&L. When you win, we win. When something breaks, we're in the trenches fixing it with you.

🎯

Growth Is the Only Mode

We never settle for average or stable. Every campaign is pushed for more, every tool is built to scale, and every result is a starting point for the next win.

💡

Build the Future

We don't just use platforms — we build tools on top of them. Our AI marketplace tools exist because we saw a gap and filled it. That mindset drives everything.

we don't do average.we do growth.