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Fiverr Pro
English
$
USD
I will develop shopify public or custom app for your store
Mostofa Tanim A
Vetted Pro
Level 2
5.0
5.0
Vetted by Fiverr Pro
Mostofa Tanim A was selected by the Fiverr Pro team for their expertise.
About this gig
I develop custom Shopify apps (private or public) using Shopify Admin API, GraphQL, REST APIs, Webhooks, and secure OAuth authentication. If Shopify's native features cannot solve your business workflow, I build scalable, production-ready solutions tailored to your needs.
I specialize in:
- ️ Shopify Private or Public App Development
- ️ Admin API & GraphQL Integrations
- ️ Webhooks & Automation
- ️ Subscription Logic & Billing APIs
- ️ Inventory, Orders, Products & Customer Automation
- ️ Third-Party API Integrations (ERP, CRM, Shipping, Payments)
- ️ Custom Dashboards & Backend Logic
- ️ Performance Optimization & Security
Whether you need automation, system integrations, advanced logic, or custom workflows, I deliver clean architecture and reliable performance.
Why Me:
- Deep Shopify API Expertise Admin API, GraphQL, REST, Webhooks
- Scalable Architecture Clean, maintainable, production-grade code
- Security First OAuth, token handling, secure webhooks
- Business Logic Focused Not just code, but operational efficiency
- Clear Communication You always know whats happening
- On-Time Delivery No excuses, no chaos
If Shopify's native features cant solve your problem, I'll build the solution. Contact me
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Mostofa Tanim A
Mostofa Tanim A
Vetted Pro
Senior Shopify Plus and Software Engineer
Level 2
Mostofa Tanim A is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Website Maintenance
- FromBangladesh
- Member sinceJun 2017
- Avg. response time1 hour
- Last delivery1 week
Languages
English, Spanish
Senior Software Engineer with 14+ years building scalable web platforms, custom Shopify Plus storefronts, and headless commerce systems. I architect complex theme logic, advanced storefront data models, custom Shopify apps (public and private), and Hydrogen-based headless builds backed by the Storefront and Admin APIs. My stack includes Next.js, React, TypeScript, Node.js, Turborepo, Python, PHP, and MySQL.
I design robust GraphQL and REST APIs, improve performance at scale, and deliver features that add real value to the product or stores.
Knock me for anything!
My Portfolio
Other Website Maintenance Services I Offer
FAQ
Can you build both private and public Shopify apps?
Yes. I build private apps for internal use and public apps ready for Shopify App Store submission.
Do you use GraphQL or REST?
Primarily GraphQL for performance and scalability. REST when required.
Can you integrate third-party systems?
Yes. ERP, CRM, shipping providers, accounting tools, and custom APIs.
Will the app be secure?
Yes. OAuth authentication, webhook verification, token protection, and best practices are standard.
Do you provide deployment support?
Yes. I assist with hosting, environment setup, and Shopify review guidelines if needed.
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
P phinkstv
Australia
I had a critical issue with my Shopify app and was stuck trying to figure out a solution. After getting on a call with this developer, they quickly understood the problem, identified the root cause, and guided me through the fix. Their Shopify knowledge was outstanding, and they explained everything...
$100-$200
Price
1 day
Duration
A 
Seller's Response
Helpful?B 
brittonchadbour
Repeat Client
United States
Exceptional Service
$4,000 and above
Price
1 day
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Extremely pleased with all work. Mostofa is highly talented and a blessing to work with. Highly recommend.
$1,500-$2,000
Price
2 days
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Amazing work
$800-$1,000
Price
2 days
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Amazing developer. Highly recommend
$800-$1,000
Price
1 day
Duration
Helpful?
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
P phinkstv
Australia
I had a critical issue with my Shopify app and was stuck trying to figure out a solution. After getting on a call with this developer, they quickly understood the problem, identified the root cause, and guided me through the fix. Their Shopify knowledge was outstanding, and they explained everything...
$100-$200
Price
1 day
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Exceptional Service
$4,000 and above
Price
1 day
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Extremely pleased with all work. Mostofa is highly talented and a blessing to work with. Highly recommend.
$1,500-$2,000
Price
2 days
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Amazing work
$800-$1,000
Price
2 days
Duration
A Seller's Response
Helpful?B brittonchadbour
Repeat Client
United States
Amazing developer. Highly recommend
$800-$1,000
Price
1 day
Duration
Helpful?
