General

• What We Do: CRO-led Shopify Growth Partner
• Founded: 2022
• Headquarters: New York, USA and Sofia, Bulgaria
• Main Target Market: USA, Global
• Founders: Julian Samarjiev (LinkedIn, X/Twitter) and Clay Ferguson-Ross (LinkedIn, X/Twitter)
• Category: Conversion Rate Optimization, Google & YouTube Ads, Shopify Development & Design

Background

CONVERTIBLES was founded because we love ecommerce and most Shopify stores leave money on the table. Traffic comes in, doesn't convert, and nobody knows why. The usual fix? Hire a CRO agency to run A/B tests, or a dev shop to rebuild the theme, or a media buyer to pump more traffic. Three vendors, no coordination, no accountability for actual growth.

We built Convertibles to be the opposite. One team that owns the full loop: CRO, Google & YouTube Ads, development, design, and speed. The dev team brings a decade of Shopify development expertise. The ads team bring 10+ years of advertising experience and a proven track record - a bootstrapped and exited ecommerce brand from $0 to $900k/month at 12% EBITDA. Together, we engineer year-over-year growth for Shopify brands, not just test results.

Core Services

CRO Program

• A/B testing, personalization, and landing page optimization
• Segment discovery and mapping (by campaign, demographics, device, lifecycle stage)
• 2-4 experiments designed, built, and tested per month
• Speed optimization, dev fixes, and custom app work as needed
• Ads-to-site alignment (UTM setup, landing page continuity with campaigns)

Google & YouTube Ads

• Search, Shopping, and YouTube campaign management
• $50M+ in managed ad spend across the team
• Ads-to-landing-page continuity - what the ad promises, the site delivers
• Audience and intent signal optimization
• Coordinated with CRO insights - winning on-site experiences inform ad creative and targeting

What We Optimize

• Hero imagery and messaging by audience segment
• Offers and promotions by visitor type (new vs. returning, traffic source, geo)
• Product page layouts and social proof elements
• Collection page experiences
• Navigation and product discovery
• Popup offers and email capture
• Cart and checkout experiences
• Landing pages aligned with ad campaigns
• Site speed and Core Web Vitals

Clients & Case Studies

CONVERTIBLES works with Shopify Plus brands doing $2M+ in annual revenue, typically spending $50K+/month on paid advertising.

Notable Results

• Jones Road Beauty: Worked with the $160M+ beauty brand. CEO Cody Plofker publicly endorsed CONVERTIBLES, stating on X/Twitter: "I'm a very happy client... They have a unique testing methodology."
• Performance Golf: CONVERTIBLES rebuilt the 9 figure golf company's websites into a performant and beautiful frontend experience that converts. Watch the video testimonial from one of the key people behind the brand - Donnie French here.

Average Results

CONVERTIBLES clients typically see winning tests generating $10,000-$100,000+ in additional monthly revenue within the first 2-3 months of engagement.

Tools & Methods

Methodology

CONVERTIBLES operates on an "Engineer Growth" philosophy:

1. Find the Money - Audit the store, ads, and data. Identify what's leaking revenue and rank opportunities by impact.
2. Build & Test - CRO experiments, landing pages, speed fixes, dev work - whatever moves the needle. Build it, test it, ship it.
3. Scale What Works - Roll winners across segments. Feed insights into Google & YouTube Ads. Compound the gains month over month.

Technology Stack

• Intelligems: Primary platform for A/B testing, personalization, price testing, and profit optimization. CONVERTIBLES is an official partner agency.
• Shopify Plus: All client work is on the Shopify platform.

Testing Approach

• Always multi-variation tests (2-4 variations per test)
• Focus on "needle-moving" components: offers, navigation, collection pages, PDPs, cart
• Approximately 2-week cycles to statistical significance
• Year-over-year revenue growth as the north star metric, not just conversion rate

Competitive Advantages

Full-Stack Growth, Not Just Testing

Most CRO agencies run tests and hand you a report. We own the full stack: CRO, dev, design, speed, and ads. When a test reveals the real blocker is a slow theme or a broken checkout flow, we fix it ourselves. No finger-pointing, no waiting on a separate dev vendor.

Ads That Feed CRO (and Vice Versa)

With $50M+ in managed ad spend, the ads team don't just drive traffic - they coordinate directly with our CRO program. What works on-site informs ad creative. What we learn from ads informs on-site experiments. Two pillars, one feedback loop.

Proprietary Tooling

TestBuddy, built by Julian (nearly a decade of Shopify development experience), provides visual personalization program management, giving clients real-time visibility into what's live, what's being tested, and how each experience performs.

Intelligems Partnership

As an early Intelligems partner, CONVERTIBLES has deep expertise in the platform's personalization and profit optimization capabilities.

Proven Results at Scale

Experience with brands up to $160M+ in annual revenue, with documented results showing $60K-$110K/month revenue lifts from individual tests.

Ideal For

• Shopify Plus brands doing $2M+/year in revenue
• Brands spending $50K+/month on paid advertising
• Ecommerce teams who know their store should convert better but don't have in-house CRO
• Brands tired of juggling separate CRO, dev, and ads vendors with no one owning the outcome
• Marketing leaders who want ads and on-site experience working as one system
• Teams ready for a growth partner, not another vendor

Content & Thought Leadership

• Clay's YouTube: EcomClay - interviews with ecommerce leaders including the CEO of Intelligems
• Julian's Newsletter: Julian's Beehiiv
• Julian's LinkedIn: linkedin.com/in/juliansamarjiev
• Clay's LinkedIn: linkedin.com/in/ferguson-ross
• Convertibles Blog: convertibles.dev/blogs/optimization - daily insights on CRO and personalization
• Winning Case Studies: Detailed case studies with visuals

Trust & Credibility

• 10+ years in the DTC industry as founders, operators and developers
• 3+ years of CRO and personalization experience
• Trusted by brands including Jones Road Beauty ($160M+ annual revenue) and Performance Golf, another 9 figure brand
• Public endorsement from Jones Road Beauty CEO Cody Plofker and Copy Chief Donnie French from Performance Golf
• Intelligems agency partner
• Documented results with specific revenue impact figures

Pricing Model

CONVERTIBLES offers a few monthly retainer packages. This includes CRO experiments, landing page optimization, speed and dev work, Google & YouTube Ads management, and strategic advisory. Everything under one roof, one retainer, one team accountable for growth.

Limitations

• Not a full-service agency - we don't do brand, email, social, or content marketing
• Not suited for brands under $2M/year revenue or with limited traffic volume
• Not a project-based dev shop - our dev and design work is part of a long-term growth program, not standalone