Growth Automation Engineer: End-to-End Outbound Marketing Flow

We are looking for an experienced B2B Growth Automation / RevOps Engineer to architect and build a 100% hands-off marketing, outbound outreach, and content engine. Our company, Valigara, is a B2B SaaS platform providing multi-channel inventory management, PIM, and automation software exclusively to jewelry businesses. Our Ideal Customer Profile (ICP): We target multichannel marketplace sellers (specifically jewelry brands that run an independent e-commerce storefront like Shopify or WooCommerce AND actively sell across online marketplaces like Etsy, Amazon, and eBay). Core Requirements: We need an expert to fully automate the execution of the following workflow: Automated Scraping: Set up an extraction of new leads. (This can be done via LinkedIn Sales Navigator or other sources, which you will setup) Data Enrichment: Programmatically identify the prospect's primary e-commerce tech stack (e.g., Shopify, WooCommerce). Cross-reference the company's web presence to verify if they have active store handles on major marketplaces (Etsy, Amazon, eBay, Walmart or other). Retrieve valid corporate contact details (email addresses, phone numbers). Push enriched lead data into our HubSpot (avoid duplicates, map custom properties such as Primary Platform and Active Marketplaces). Create multi-step outbound email sequences. AI Marketing Content Creation (In-Scope): set up the automated copywriting workflows (using AI tools like ChatGPT API, Claude API, Copy.ai, etc.) to generate personalized email sequences, dynamic opening lines, and basic ad copy. Sales Feedback Loop: Automate a handler for positive email replies so that when a prospect shows interest, a deal pipeline stage updates, and an assignment notification alerts our sales team. The Technology Stack: We use HubSpot (Marketing Hub Professional and Sales Hub Professional) We Have LinkedIn Sales Navigator and Google Ads (not necessarily relevant) The Rest of the Stack is Up to You: You will define, configure, and connect the remaining software stack. Whether you prefer using Clay.com, Phantombuster, Make.com, Smartlead, Instantly, or anything else, we are open to your technical recommendations. The entire operational stack (excluding ad spend) must fit comfortably within a $1,000/month tool budget, not including existing stack (Hubspot & LinkedIn) To Apply, Please Provide: - A brief explanation (or Loom video) of a similar programmatic outbound engine you have built from scratch, feeding into a CRM. Outline the exact stack you recommend to fulfill our workflow (Scraping + Enrichment + AI Content Creation + Email Delivery) and why it's the most stable choice. How would you handle the programmatic lookup to check if a jewelry brand domain has an active storefront on Etsy or Amazon?