SaaS backend / front end full stack developer

Summary We are an established ecommerce SaaS platform focused on: * Product Reviews * Seller Ratings * Customer Feedback Analytics * AI Review Summaries * Shopper Segmentation * UGC & Review Syndication Our platform powers review and trust experiences for ecommerce merchants and enterprise retailers. We are currently rebuilding and modernizing portions of our product stack and are looking for a strong backend-focused developer to help us rapidly ship new features and improve existing systems. Tech Stack Current Stack: * PHP * MySQL * Kohana / CodeIgniter Framework (legacy) * React (newer dashboard components) * JavaScript * REST APIs * AWS Infrastructure What You’ll Be Working On You’ll help build and improve backend systems related to: * Product Reviews * Review Collection Systems * AI-powered Review Features * Shopper Profile Segmentation * Merchant Dashboards * Ecommerce Integrations * API Development * Review Syndication * Search & Filtering Systems * Notification & Messaging Systems * Moderation & Trust Systems ⸻ Example Projects Examples of work may include: * Building scalable PHP APIs * Improving review ingestion pipelines * Integrating AI-generated review summaries * Building merchant-facing analytics features * Developing moderation workflows * Improving dashboard performance * Creating product catalog sync systems * Ecommerce platform integrations (Shopify, BigCommerce, etc.) * Refactoring legacy code into cleaner architecture * Performance optimization and database improvements Requirements Must Have * Strong PHP backend experience * MySQL optimization experience * API architecture experience * Comfortable working in large existing codebases * Strong debugging and problem-solving skills * Experience working independently * Experience shipping production SaaS features Nice To Have * Kohana framework experience * Ecommerce platform experience * React experience * AWS familiarity * AI / OpenAI API experience * Review, UGC, or marketplace platform experience ⸻ What We’re Looking For We are looking for developers who: * move quickly, * communicate clearly, * think like product owners, * and can help improve architecture while still shipping features pragmatically. This is not a greenfield startup project — it’s a mature production platform with real users and evolving infrastructure. You should be comfortable balancing: * technical debt, * feature velocity, * and production reliability. ⸻ Engagement * Ongoing contract opportunity * Long-term potential * Flexible hours * Remote