Adil M.

Senior Ruby on Rails & Shopify Developer | AI/LLM Integrations

Senior Ruby on Rails and Shopify Developer Top Rated Plus | $200K+ Earned | 8,800+ Hours | 10+ Years I build, scale, and rescue revenue-generating products with Ruby on Rails, Shopify, and practical AI integrations. Most clients do not hire me for a quick patch. They hire me when they need a senior developer who can understand the business, take ownership of the codebase, protect revenue-critical workflows, and keep shipping safely over the long term. My core expertise sits in three areas: ✅ Ruby on Rails SaaS, marketplaces, APIs, internal tools, and legacy product rescue ✅ Shopify stores, Shopify apps, Shopify Plus, B2B, and platform migrations ✅ AI integrations using Claude, OpenAI, RAG, embeddings, and structured outputs I work best with founders, product teams, and agencies that already have a serious product, real users, real revenue, or a codebase that needs senior ownership. ✦ RUBY ON RAILS ➜ Rails 4 through Rails 8 ➜ Greenfield builds, version upgrades, and legacy codebase rescue ➜ Hotwire, Turbo, Stimulus, ViewComponent, and modern monolith architecture ➜ Sidekiq, PostgreSQL, Redis, background jobs, queues, and scaling work ➜ Slow query fixes, N+1 cleanup, performance tuning, and large data workflows ➜ REST APIs, GraphQL APIs, third-party integrations, and internal admin systems ➜ Multi-tenant SaaS platforms with roles, permissions, billing, and reporting ➜ Stripe billing, subscriptions, invoices, trials, plans, and payment workflows ➜ RSpec coverage, staging-first releases, safe deploys, and production debugging ✦ SHOPIFY ➜ Published Shopify App Store apps, public apps, and custom private apps ➜ Shopify Plus, B2B, and high-volume stores with 10,000+ product catalogues ➜ Liquid, Online Store 2.0, custom sections, theme architecture, and speed optimization ➜ Admin API, Storefront API, webhooks, metafields, metaobjects, and bulk operations ➜ Checkout Extensibility, Shopify Functions, discounts, cart logic, and custom workflows ➜ WooCommerce to Shopify and BigCommerce to Shopify migrations ➜ Custom Shopify app development with Rails, embedded apps, billing, and background jobs ➜ Storefront performance, conversion-focused UX, and clean integration with business systems ✦ AI INTEGRATIONS ➜ Claude API and OpenAI API integrated into production Rails and Shopify applications ➜ AI chatbots, internal copilots, workflow automation, and support tools ➜ RAG pipelines, embeddings, vector search, and pgvector ➜ Structured outputs, JSON reliability, guardrails, fallback handling, and retry logic ➜ Token usage controls, cost tracking, latency-aware design, and production monitoring ➜ AI features built for real business value, not trend-chasing or demo-only work ✦ PROVEN WORK ➜ Rescued and maintained long-running Rails products where stability, upgrades, and safe releases mattered ➜ Built Shopify apps and stores with large catalogues, custom workflows, APIs, webhooks, and performance constraints ➜ Improved slow dashboards, admin panels, background jobs, checkout flows, and data-heavy workflows ➜ Added production AI features with structured outputs, fallbacks, token limits, and reliable behavior under real usage ➜ Helped teams turn unclear product requirements into maintainable technical execution ✦ HOW I WORK ➜ I communicate clearly and give honest timelines ➜ I prefer staging-first delivery, tested changes, and documented decisions ➜ I can move fast, but I do not ship careless work ➜ I use Claude Code and Cursor as engineering multipliers, but I review, test, and own every line that ships ➜ I care about business outcomes, not just closing tickets ✦ BEST FIT I am a strong fit if you need: ➜ A Rails SaaS that needs to scale ➜ A legacy Rails app that needs a senior owner ➜ A Shopify store that needs better performance, workflows, or custom features ➜ A Shopify app that needs to be built, fixed, or improved ➜ A production AI feature that needs to be useful, reliable, and cost-controlled ➜ A long-term technical partner who can take ownership without hand-holding Send an invite with a short brief, and I will reply with a concrete technical plan.