I will do shopify app development

R
rajatdev321
R
rajatdev321
Rajat K
5.0
5.0

About this gig

Are you looking to build a custom Shopify app or enhance your store with advanced features? You're in the right place!

With over 9+ years of Shopify development experience, I specialize in creating:

  • Custom Shopify apps (public or private)
  • Embedded apps with Shopify Admin or POS
  • Shopify API integrations (Admin, Storefront, Checkout, Webhooks)
  • App proxy and metafields logic
  • App extensions and Shopify CLI-based apps
  • Automation tools for orders, products, customers
  • Secure OAuth login, Polaris UI, and backend architecture

Whether you're a merchant, an agency, or a startup I can help you build, scale, and launch your app on the Shopify ecosystem.

Tech Stack: Node.js, Express, React, Polaris, PostgreSQL, Prisma, Redis, Vercel, Linode, MongoDB

Lets turn your idea into a real product fast, clean, and fully functional.

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 Rajat K

Rajat K

Shopify App Developer, NextJS, SaaS Expert, PostgreSQL Backend

5.0(4)
  • FromIndia
  • Member sinceSep 2024
  • Avg. response time7 hours
  • Last delivery10 months
  • Languages

    English
https://rajatweb.com/ 👋 Hello! I'm a results-driven developer with deep expertise in building modern, high-performing web applications and Shopify solutions. I specialize in: ✅ Custom Shopify App Development ✅ Next.js Frontend & Full-Stack Projects ✅ PostgreSQL & API Integrations ✅ SaaS Application Architecture ✅ React, TypeScript, Redux Toolkit & Tailwind CSS From building powerful storefront integrations to crafting entire SaaS platforms, I bring speed, clarity, and scalability to every project. I'm obsessed with performance, clean architecture, and delivering real business value.

My Portfolio

Reviews

3 reviews for this Gig
5.0

(3)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • N

    noahas1

    Repeat Client

    US

    United States

    5

    Rajat was great! It was my first time using him and I have now found my new go to Shopify developer. He was quick to respond. Great English fluency, knowledgeable and responsive. He also understood immediately what I was trying to accomplish. I would definitely encourage anyone looking for a Shopify developer or Flow developer to look here.

    Up to $50

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • J
    image-docs

    jbraatz111

    Repeat Client

    US

    United States

    5

    Rajat K is an exceptional web developer. His work on our complex Shopify backend with Linode and full stack (Postgres, GraphiQL, etc.) is AMAZING—bug-free, well-documented, and highly detailed. Working with him was smooth due to his language fluency, proactive communication, and on-time delivery. Top-of-the-line service! 🙌

    $400-$600

    Price

    6 days

    Duration

    Helpful?
    Yes
    No
  • J
    image-docs

    jbraatz111

    Repeat Client

    US

    United States

    5

    He went above and beyond the call to get something working for us and did so on a tight schedule! I really appreciate all that he's done and he's an A+ developer for Shopify + Front end work and did a lot of JS / HTML / CSS as well for us. I'd highly recommend him!!

    $400-$600

    Price

    2 days

    Duration

    Helpful?
    Yes
    No
Reviews

3 reviews for this Gig
5.0

(3)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • N

    noahas1

    Repeat Client

    US

    United States

    5

    Rajat was great! It was my first time using him and I have now found my new go to Shopify developer. He was quick to respond. Great English fluency, knowledgeable and responsive. He also understood immediately what I was trying to accomplish. I would definitely encourage anyone looking for a Shopify developer or Flow developer to look here.

    Up to $50

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • J
    image-docs

    jbraatz111

    Repeat Client

    US

    United States

    5

    Rajat K is an exceptional web developer. His work on our complex Shopify backend with Linode and full stack (Postgres, GraphiQL, etc.) is AMAZING—bug-free, well-documented, and highly detailed. Working with him was smooth due to his language fluency, proactive communication, and on-time delivery. Top-of-the-line service! 🙌

    $400-$600

    Price

    6 days

    Duration

    Helpful?
    Yes
    No
  • J
    image-docs

    jbraatz111

    Repeat Client

    US

    United States

    5

    He went above and beyond the call to get something working for us and did so on a tight schedule! I really appreciate all that he's done and he's an A+ developer for Shopify + Front end work and did a lot of JS / HTML / CSS as well for us. I'd highly recommend him!!

    $400-$600

    Price

    2 days

    Duration

    Helpful?
    Yes
    No