John Brennan

Experienced eCommerce Leader | Driving Amazon Growth for Leading CPG Brands

Oxford, Connecticut, United States

About

I am a seasoned eCommerce Manager with 10+ years of sales and marketing leadership experience in various sectors. Recognized for demonstrating a natural aptitude for analytics, as well as for strategic planning and campaign design, I have a verifiable history of contributing directly to company growth and expansion throughout my career. Professional focal points include ecommerce roadmaps, competitive assessments, content analysis, promotional strategies, brokerage support, digital strategy, SEO, content analysis, budget management, forecasting, consumer promotions, account management, integrated marketing, and partner management. Delivering superior administration on the latter areas of expertise requires utilization of effective communication and organizational skills, as well as problem solving, strategic thinking, project management, and resource management to support efficiency and maximum returns. Most recently, I was the Account Supervisor with Catapult Marketing. Under my leadership, I developed and spearheaded all merchandise execution, SEO optimization, content analysis and updates, media planning, and analytics. I administered Amazon Advertising search ads via AMS system, identified key search terms, composed copy, tested various iterations, and enhanced campaigns based on results and ROI. In addition, I liaised with senior leadership, corporate partners, and brand planners to ensure the company’s eCommerce structure was driving the business forward with minimal expenditures. Colleagues describe me as a progressive, driven, down-to-earth, digital marketing and strategy expert who can be relied on to offer superior solutions that deliver profitable results on time and under budget.

Experience

  • Account Manager, Amazon at Beiersdorf
    Nov 2025 - Present · 8 mos

  • eCommerce Manager, Amazon at Edgewell Personal Care
    Mar 2022 - Jul 2025 · 3 yrs 5 mos

  • National Account Manager, eCommerce at Oxbow Animal Health
    Oct 2020 - Mar 2022 · 1 yr 6 mos

  • Manager, eCommerce Sales Analytics and Insights at Blue Buffalo Co
    Jul 2019 - Oct 2020 · 1 yr 4 mos

  • Epsilon (3 yrs 6 mos)
    • Account Supervisor, eCommerce
      Feb 2017 - Mar 2019 · 2 yrs 2 mos

      • Demonstrated expertise as account lead responsible for eCommerce support of five CPG clients across more than 20 national brands with budgets ranging from $250k – $1.5MM • Employed control and authorization over merchandising strategy execution, SEO optimization, content analysis and updates, media planning, and analytics. • Charted successful course of key omnichannel retailers (Amazon, Walmart, Ahold) and strategy development and brand planning. • Spearheaded cross-functional teams in developing innovative strategies and concepts. • Originated and executed custom, fully integrated national consumer promotions which supported key tent-poles; managed events for Kellogg’s Sports Activations (College basketball, Football, MLS Soccer), Holiday (Thanksgiving and Christmas) • Organized and facilitated the launch of innovation products across digital and in-store markets. • Traced and compiled results of various media, marketing, and promotional activities, including page views, CTR’s, conversions, redemptions and ROI. • Ascertained, assessed, and recommended optimization implementations based on results. • Influenced various retailer and third-party systems, including Amazon Vendor Central, Webcollage, and Salsify, in managing and updating product content. • Educated and mentored Junior Account Executives in all aspects of account management and performance.

    • Account Executive
      Oct 2015 - Feb 2017 · 1 yr 5 mos

      • Served as day-to-day liaison between clients and internal teams to facilitate communication and align objectives. • Supported the Senior Leadership in program development and execution including strategic brainstorming, devising recommendations, and defining project scopes. • Executed timelines and details for online ecommerce campaigns, in-store merchandising, strategic marketing plans, in-home vehicles and supplier events, including Year Beginning Meetings and Shareholders Meeting.