Browse categories
Explore
Fiverr Pro
English
$
USD
I will build a custom shopify app or private integration for your store
Iloomnex
About this gig
Most Shopify work on Fiverr is theme customization. That's not this gig. This gig is for store owners and founders who need real backend work: custom apps, private integrations, and automation that plugs into the Shopify Admin API or Storefront API and does something useful with the data.
I spent two years at an agency shipping Shopify integrations for e-commerce clients. Private apps with OAuth and embedded admin UI. Webhook handlers that survive retries and replay attacks. Order automation that pushes to warehouses, accounting systems, or custom fulfillment flows. Inventory sync between Shopify and Amazon, NetSuite, or a custom backend. Headless commerce backends using the Storefront API for stores that outgrew Liquid.
The code is Node.js and TypeScript. Deployment is AWS or your preferred host. Everything I ship includes the parts most Shopify gigs skip: HMAC verification on webhooks, proper OAuth scope handling, rate limit backoff, idempotent order processing, and logs you can actually debug.
You get a private Git repo, documentation, tests on the critical paths, and a handoff call.
I reply within an hour, any timezone. Message me with what your store needs.
Get to know Iloomnex
Iloomnex
Senior backend engineer
- FromPakistan
- Member sinceNov 2023
- Avg. response time1 hour
- Last delivery1 year
Languages
English
Senior backend engineer, 4+ years shipping production systems. I build Node.js and NestJS backends on AWS serverless. Lambda, SQS, EventBridge, Step Functions. I handle the integrations most devs avoid: Amazon SP-API, Shopify, QuickBooks, Xero, and LLMs via Bedrock, OpenAI, and Claude.
Day job is a multi-tenant HRIS and payroll platform running real traffic. On Fiverr as iLoomNex, I take on backend builds, API integrations, and AI features that need to work in production, not just in a demo.
Always online. Reply in under an hour. Any timezone.
My Portfolio
FAQ
Can you work with my existing Shopify app or do you only build from scratch?
Yes, I work with existing apps if the stack is Node.js, NestJS, or Express. Send me the repo or a description of what's there and what you need changed before ordering. Legacy code takes longer to read than to write, so existing-app work is priced via custom offer based on complexity.
Do you build public apps for the Shopify App Store?
I build the code, but public App Store listings require Shopify's review process, which takes weeks and is the app owner's responsibility to manage.
What about Shopify Plus features like Flow, Functions, or Scripts?
I work with Shopify Plus stores regularly. Shopify Functions are within scope if your store has Plus access. Shopify Flow automations I can design but Flow itself is configured in the Shopify admin, not via code, so that work is more consultation than development.
