Resume

John Krell Sta Ana

E-Commerce Account Management Specialist | AI & E-Commerce Project Manager

Valenzuela City, Philippines (open to remote and international)

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Full-stack e-commerce specialist and project manager with a track record of growing Amazon and multichannel brands from launch to multi-million-dollar scale. I run marketplace accounts end to end (listing, advertising, and reporting), and I double as a domain expert and product owner who defines specs, runs sprints, and builds AI-powered internal tooling. I thrive in fast-paced, high-volume environments where priorities shift daily, leading a team and translating e-commerce operations into software with engineering partners.

Core Competencies

Marketplace & Advertising

Amazon Seller and Vendor account management, Amazon Ads (Sponsored Products, Brands, Display), Amazon DSP, Amazon Marketing Cloud, Walmart Connect, Google Ads, Meta Ads, TikTok Shop, listing and catalog optimization, keyword strategy, ROAS and ACoS optimization, budget scaling.

AI & Product

AI agent and automation design for e-commerce, agentic CLI tooling (Claude Code, OpenAI Codex), internal tool development, web app development (Next.js, React), reporting pipelines, prompt and workflow design.

Project Management & Ops

Requirements definition (Jira), sprint planning, gap analysis, cross-functional and cross-cultural stakeholder management, SOP and playbook authoring, team leadership, training.

Professional Experience

Amazon Head of Operations / Domain Expert

September 2023 - Present

Kepler Commerce Corporation

E-commerce operations and AI product role in a fast-paced agency environment serving multiple client brands. Owns Amazon account management while leading development of an AI-powered services platform that scales expert e-commerce work.

  • +Owns end-to-end Amazon advertising and Seller Central account management for multiple client brands: catalog health, pricing, inventory, and reporting under tight SLAs.
  • +Designed and helped build an AI-powered e-commerce services platform: specialized AI agents that automate expert Amazon work (keyword research, listing optimization, advertising, pricing, diagnostics).
  • +Domain expert and product owner for the platform: authored the playbooks and quality benchmarks that let the agents perform at a senior-specialist standard.
  • +Leads and coaches a team; runs capacity planning, SOPs, QA, and performance tracking that keep delivery on time as priorities shift.
  • +Drives internal product development as project manager: defines requirements in Jira, runs gap analysis, and ships fast with agentic CLI tooling (Claude Code, Codex).
  • +Selected for on-site work in China: trained local staff on Amazon workflows and scoped services with clients.

Advertising Specialist

April 2022 - March 2024

Pioneer Square Brands

Sole advertising owner across a three-brand consumer-electronics-accessories portfolio.

  • +Delivered 30%+ year-over-year growth across all three brands while reducing advertising costs by more than 50%.
  • +Led a company-wide data migration and built automated Domo reporting infrastructure, replacing manual reporting and improving performance visibility.
  • +Managed channel strategy and budgets across Amazon Ads, Google Ads, and Meta Ads.

Associate Team Lead (Promoted)

July 2020 - April 2022

OmniChannel Solutions

  • +Led Amazon PPC operations for multiple brands (consumer electronics, personal care, food, pet).
  • +Built and standardized DSP processes and training, improving throughput and accuracy.
  • +Co-implemented new process-management software across brand umbrellas with PMs.
  • +Recognized as Specialist of the Month in the first month of being hired, for two consecutive months.

Selected Results

  • →$2.5M total sales for a supplement brand (+$351K YoY); scaled ad spend from $70K to $200K in one month while maintaining strong ROAS.
  • →77% YoY sales growth for an oral vitamin spray brand; ROAS improved from 2.72 to a peak of 4.2.
  • →326% ad-sales growth in month one for a mechanical keyboard brand, plus 55.3% in month two.
  • →30%+ YoY growth across three brands with 50%+ lower advertising costs.

Education

STI College Caloocan

2008 - 2010

Diploma in IT

University of the Philippines Diliman

2006 - 2008

BS Physics

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