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You will get a full stack third party api integrations developer

Muddasar H.Status: Offline
Muddasar H. Muddasar H.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Web Application Programming services from Muddasar, priced and ready to go.
Muddasar H.Status: Offline
Muddasar H. Muddasar H.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Web Application Programming services from Muddasar, priced and ready to go.

Project details

I offer seamless integration of any external API you need, whether it’s for payments like Stripe, PayPal, Google Pay, or Apple Pay; messaging through Twilio; or even hardware integrations like Star Micronics printers. I handle everything from authentication to error handling, logging, and documentation.

Whether your backend is in Ruby on Rails, Node.js, or another modern framework, I’ll make sure your integrations are secure, reliable, and production-ready.
Programming Languages
JavaScript, Ruby/Ruby on Rails, TypeScript
Coding Expertise
Performance Optimization, Security

What's included $500

These options are included with the project scope.

$500
  • Delivery Time 7 days
  • Number of Revisions 3
  • Number of Pages 7
    • Source Code

Frequently asked questions

5.0
1 review
100% Complete
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1% Complete
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1% Complete
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GO

Glen O.
5.00
Sep 6, 2025
Development work for a SaaS platform Mudassar is a diligent and capable developer who is an asset to any team.
He is responsive and communicative and will provide suggestions to help make things better.
He is able to quickly grasp an understanding of the project and if he is unsure of anything, he will perform research and due diligence before commencing the activity.
Muddasar H.Status: Offline

About Muddasar

Muddasar H.Status: Offline
Full Stack Developer | Ruby on Rails & React | SaaS Platforms
5.0  (1 review)
Lahore, Pakistan - 1:08 am local time
If you're building a SaaS product and need a full stack engineer who can own a feature completely, from billing to APIs to notifications, without needing constant direction, keep reading.

I'm a full stack engineer with two years of production experience in Ruby on Rails and React, shipping real features for real B2B SaaS products. At CoachVantage I built a complete SMS notification system using Twilio from scratch. Appointment confirmations, automated reminders at 48 hours, 24 hours, and 1 hour before, cancellations and reschedules, all fully automated with consent management, credit based billing, and retry logic. Zero double charges across the entire system.

I also fixed critical Stripe and PayPal billing bugs that were causing duplicate invoices for real customers, integrated Hasura GraphQL with a Rails backend cutting data fetch time by 45%, and reduced API response times by 40% using Redis caching under heavy production load.

I work across the full stack. I understand why features exist, not just how to build them. When I take on a project I own it completely. Right questions upfront, clear communication throughout, no disappearing mid project.

My core stack: Ruby on Rails, React, PostgreSQL, Stripe, Twilio, Sidekiq, Redis, REST APIs, GraphQL.
If your project involves any of these, lets talk.

Steps for completing your project

After purchasing the project, send requirements so Muddasar can start the project.

Delivery time starts when Muddasar receives requirements from you.

Muddasar works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Gathering

Understand your use case, tech stack, and API provider details.

Credential Setup

Collect API keys, tokens, and sandbox credentials from the client.

Review the work, release payment, and leave feedback to Muddasar.