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Software Engineering

The engineering foundation behind the Klaviyo and email work. When your project needs production web development, not just Klaviyo configuration or email templates, this is the same engineer, same engagement.

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What I build

Production web applications using React and Next.js on the frontend, Node.js on the backend. Shopify theme development and Liquid customization. REST and GraphQL API integrations. Database design and server-side logic. The kind of work that requires 13+ years of engineering experience, not a no-code tool or a junior developer learning on your project.

  • React and Next.js frontend development: component architecture, state management, performance optimization
  • Node.js backend: REST APIs, webhooks, data pipelines, authentication, and third-party integrations
  • Shopify theme development: Liquid templates, custom sections, JavaScript event instrumentation, checkout extensions
  • Full-stack SaaS and ecommerce builds, from architecture through deployment
  • Integration development: connecting your platform to Klaviyo, payment providers, subscription apps, and custom data sources

When this applies

You need a developer who can work across your entire stack, not just Klaviyo or email. Your Shopify store needs custom theme work that your Klaviyo marketer cannot touch. You are building a product that needs a React frontend and Node.js backend. You have an existing codebase that needs a senior engineer to extend, debug, or rebuild.

  • Custom Shopify theme features that require JavaScript and Liquid, not just Klaviyo configuration
  • Web applications built in React or Next.js that need ongoing development or a rebuild
  • Backend APIs and integrations that connect your business systems together
  • A senior engineer who can own the technical scope end-to-end without managing multiple freelancers
Other services
01Klaviyo Service→02Email Development→

Describe your situation

Tell me what is broken or what you need built. I will tell you honestly whether I can help and what that would look like.

moksedul@moksedulhoque.com