You will get payment gateways, third-party APIs into your React | Next.js | PHP app
Top Rated
Top Rated
Project details
Is your app missing a crucial integration? Need Stripe payments, email notifications, a CRM connection, or automation workflows — but don't want to spend days figuring out complex APIs? I've got you covered.
I'm a React and Next.js developer with 5+ years of experience building clean, reliable API integrations for web apps of all sizes.
✅ APIs & services I integrate:
Payments — Stripe, Razorpay, PayPal
Communication — Twilio, SendGrid, Mailchimp
Auth — Firebase, Auth0, NextAuth, OAuth 2.0
Storage — AWS S3, Cloudinary
CRM — HubSpot, Salesforce, Airtable
AI — OpenAI, Google Gemini, HuggingFace
Automation — Zapier, Make.com, n8n
E-commerce — Shopify API, WooCommerce
✅ Every order includes:
Clean, maintainable code
Error handling & input validation
Secure .env setup
Fully tested integration
Delivered to your repo or as a zip
✅ Why clients trust me:
On-time delivery — always
Clear communication throughout
I explain everything so your team can maintain it
Available for follow-up after delivery
💬 Not sure which package fits? Message me first — I'll reply within 1 hour, no obligation.
I'm a React and Next.js developer with 5+ years of experience building clean, reliable API integrations for web apps of all sizes.
✅ APIs & services I integrate:
Payments — Stripe, Razorpay, PayPal
Communication — Twilio, SendGrid, Mailchimp
Auth — Firebase, Auth0, NextAuth, OAuth 2.0
Storage — AWS S3, Cloudinary
CRM — HubSpot, Salesforce, Airtable
AI — OpenAI, Google Gemini, HuggingFace
Automation — Zapier, Make.com, n8n
E-commerce — Shopify API, WooCommerce
✅ Every order includes:
Clean, maintainable code
Error handling & input validation
Secure .env setup
Fully tested integration
Delivered to your repo or as a zip
✅ Why clients trust me:
On-time delivery — always
Clear communication throughout
I explain everything so your team can maintain it
Available for follow-up after delivery
💬 Not sure which package fits? Message me first — I'll reply within 1 hour, no obligation.
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$59
|
Standard
$199
|
Advanced
$499
|
|---|---|---|---|
| Delivery Time | 5 days | 15 days | 30 days |
Number of Revisions | 1 | 5 | Unlimited |
Design Customization | - | - | |
Content Upload | |||
Responsive Design | - | - | |
Source Code |
28 reviews
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Michael B.
Sep 16, 2025
Need Developer to translate PDF Design to Code
Randeep proved to be a great developer, followed instructions, and provided updates. Overall, the working product did not exactly match our original design nor was it done in a timely manner. Had we had more time available to work on this, we would've seen a great product.
JM
Jon M.
Jul 28, 2025
API Integration for Auto-Publishing on Social Media Platforms
OO
Obayomi O.
Jul 11, 2025
PHP Developer Needed to Finalize an Existing Project (CodeIgniter, MySQL, Bootstrap 4, Metronic)
Randeep Singh Dhillon is a skilled developer who pays great attention to detail. He resolves issues effectively without altering unrelated parts of the code.
MS
Mikael S.
Jun 13, 2025
Shopify API Integration Specialist Needed
He not only completed the task efficiently but went above and beyond. He listened carefully to all my concerns and proactively addressed any issues that came up along the way. I'm very satisfied with his work and highly recommend him!
MS
Milad S.
Oct 30, 2024
Backend work on web app
About Randeep Singh
Senior Web App Developer | PHP, Node.js & React | AI Tech & SaaS
100%
Job Success
Patti, India - 8:21 am local time
Are you struggling to connect disparate systems, migrate complex data, or build a high-performance web application from the ground up? I specialize in bridging the gap between modern frontends and robust, secure backends.
As a Senior Full-Stack Developer, I do more than just write code—I build scalable solutions that solve real business bottlenecks. Whether you need to seamlessly sync massive account metrics across platforms like Google Ads and Meta Ads, fix complex OAuth authentication flows, or configure intricate Apache environments to seamlessly run custom application architectures alongside your CMS, I handle the technical heavy lifting.
My Core Technical Arsenal:
- Backend & APIs: Node.js, PHP, Laravel, CodeIgniter, Express.js, NEXT.js. (Expertise in REST/GraphQL, custom API pipelines, and third-party integrations).
- Frontend: React.js, Vue.js, Tailwindcss, JavaScript (ES6+), HTML5/CSS3.
- Databases: Supabase, MySQL, PostgreSQL, MongoDB, Firebase. (Data migration, optimization, and secure backups).
- DevOps & Infrastructure: AWS, Google Cloud, DigitalOcean, Apache server configuration, URL routing, CI/CD pipelines.
Why Partner With Me?
- Architectural Foresight: I don't just patch bugs. I look at your entire server and application architecture to ensure long-term stability, speed, and security.
- End-to-End Ownership: From the initial ideation phase to deploying secure authentication systems (OAuth, JWT) on cloud platforms, I manage the full development lifecycle.
- Clear Communication: I prioritize transparent progress updates and accurate timelines so you always know exactly where your project stands.
If you want to turn your development vision into reality with code that your future team can easily read and scale, let’s collaborate.
Invite me to your job, and let's explore the possibilities for your project!
Best regards,
Randeep Singh
Steps for completing your project
After purchasing the project, send requirements so Randeep Singh can start the project.
Delivery time starts when Randeep Singh receives requirements from you.
Randeep Singh works on your project following the steps below.
Revisions may occur after the delivery date.
Integrate payment gateways, third-party APIs into your React or Next.js app
React/Next.js developer with 5+ years experience. I integrate Stripe, Twilio, Firebase, OpenAI, HubSpot, Zapier & more. Clean code, error handling, tested & delivered on time. Message me first!