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Simon Gardner

@simongardner

Growth operator at Growth(by)Gardner who built an AI bidding tool and PIM that increased retailer sales 150% and ROAS 35%.

Germany

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What I'm looking for

I’m seeking my next permanent role to build, lead, and scale the next chapter of growth.

At Growth(by)Gardner, I built an AI bidding tool and PIM for a 7,500+ SKU B2B retailer, increasing sales by 150% and ROAS by 35%. I also built and exited Platz, a real-time campervan trip-planning app.

At neural frames, I shaped a creator-focused product and growth narrative and built PLG measurement dashboards linking activation, retention, revenue, and product releases. I improved ROAS from 0.45× to 7.3×, increased signups by 104%, and reduced spend by 7.5%.

At iMusician, I led the shift to a SaaS model, rebuilt pricing, and launched a product-led growth strategy. The transformation increased MRR by 500%, from €360k to €2.16M, and grew the customer base from 400K to 1.5 million.

I build growth systems grounded in experimentation and commercial outcomes, and have owned a €25M P&L and governed €80M+ in marketing spend. I’m now seeking a permanent role to build, lead, and scale the next chapter of growth.

Experience

Work history, roles, and key accomplishments

Current

Founder

Current

SKELN.IO

Mar 2026 - Present (7 months)

Designed and built an AI-powered consulting platform that replaces traditional agency engagements with on-demand, expert-built tools.

AI Consulting Platform SaaS

Current

Co-Founder

Current

Republic of Heat

Sep 2025 - Present (1 year 1 month)

Founded a subscription business working with independent European hot sauce makers, bootstrapping growth through events, community activity, and social ads.

Subscriptions Ecommerce Social Media Community PLA YouTube Instagram

Current

Growth Consultant

Current

Growth(by)Gardner

Jan 2023 - Present (3 years 9 months)

Built AI bidding tool and PIM for a B2B retailer, increasing sales by 150% and ROAS by 35%. Managed Google Ads for various B2C clients in Germany and the UK.

AI Bidding PIM Google Ads B2B B2C Ecommerce

Interim Head of Growth

Neural Frames

Dec 2025 - Mar 2026 (3 months)

Originated and built the product and growth narrative, repositioning the company toward a creator-focused model. Resolved data and tracking issues and built PLG measurement dashboards.

PLG PostHog GA4 Stripe ROAS Growth Strategy Data Analysis

Interim Head of Performance

Holzkern

Mar 2025 - Sep 2025 (6 months)

Restructured the performance team around business outcomes, delivering an 8% ROAS uplift on a global €12M spend. Implemented unified reporting and incrementality discipline.

Performance Marketing Google Ads Meta Ads ROAS OKRs Reporting Incrementality

Chief Marketing Officer

iMusician

Jan 2019 - Dec 2023 (4 years 11 months)

Drove a +500% increase in MRR and grew the customer base from 400K to 1.5 million. Led the shift to a SaaS model, rebuilt pricing, and launched a product-led growth strategy.

SaaS PLG P&L Incrementality ROAS OKRs Localization Team Building

Head of Marketing

iMusician

Jan 2019 - Dec 2020 (1 year 11 months)

Took full ownership of the marketing budget and P&L, introducing incrementality testing and marginal ROAS. Rebuilt and professionalized the team.

Marketing P&L Incrementality ROAS Team Building

Marketing Team Lead

Crealytics

Jan 2018 - Dec 2019 (1 year 11 months)

Drove profit-led growth for major retail clients through Product Listing Ads, achieving a +260% ROAS uplift for Harrods. Managed a 12-person performance marketing team.

Performance Marketing PLA ROAS Team Management Client Relations

Client Services Director

Digivate

Jan 2017 - Dec 2018 (1 year 11 months)

Acted as de-facto Managing Director, leading strategic marketing, operations, and full P&L for a 20-person team. Delivered a +14% performance uplift across the client portfolio.

Agency Management P&L SEO Performance Marketing Mavenlink

Account Director

Jellyfish

Jan 2014 - Dec 2018 (4 years 11 months)

Spearheaded a strategic partnership for the €28M Experian account, leading to a 3x increase in the customer base. Architected a data-driven transformation with custom incrementality models.

Account Management Incrementality ROAS Cross functional Leadership Rebranding

Account Manager

Jellyfish

Jan 2014 - Dec 2015 (1 year 11 months)

Managed global, multi-million pound e-commerce, B2G, NGO, and SaaS accounts. Founded an internal productivity working group that saved the agency over €1M in fees.

Account Management Ecommerce B2G SaaS Productivity

Head of Digital

WFCA / TTMV

Jan 2012 - Dec 2014 (2 years 11 months)

Built and scaled the digital division from the ground up, growing revenue from £7.5K/month to £8M/year. Delivered a €34M uplift for Western Union across 40 countries.

Digital Strategy P&L Segmentation CRM Customer Journey Team Building