Third-Party API & Payment Integration by Jonathan AdelThird-Party API & Payment Integration by Jonathan Adel
Third-Party API & Payment IntegrationJonathan Adel
Cover image for Third-Party API & Payment Integration
What I Build: Integrations that connect your existing website or app to outside services — payment processing, email/SMS, third-party APIs, or automated workflows between systems that need to talk to each other.
What You Get:
Working payment processing your customers can actually use (checkout, subscriptions, refunds)
Reliable connections to the third-party services your business depends on
Secure handling of API keys, tokens, and sensitive data
Automated workflows that remove manual, repetitive tasks
Clean error handling so failed payments or API calls don't go unnoticed
Integration built to fit into your existing codebase, not bolted on awkwardly
Tech Stack & Tools:
Payments: Stripe, PayPal
Communication: Twilio, SendGrid, Resend, Nodemailer
CRM & Automation: HubSpot, Zapier-style webhook logic
Backend: Node.js, Express.js, Next.js server actions
Other: REST API design, OAuth, webhooks, Git/GitHub, AWS
What's Included:
Review of your existing codebase and the integration you need
Full setup and testing of the third-party service or payment flow
Secure handling of credentials and sensitive data
Webhook setup where the integration requires real-time updates
Post-delivery bug fixing for anything tied to my work — no time limit
Ideal For: Businesses with an existing website or app that need to accept payments, connect to a CRM, send automated emails/SMS, or integrate any third-party service reliably and securely.
Pricing: Scoped based on the integration's complexity — most work in this tier ranges from $150-$600. I'll review your request and confirm a price before starting.
FAQs

Starting at$150
Duration1 week
Tags
ExpressJS
Firebase Authentication
Node.js
PayPal
Stripe
TypeScript
Service provided by
Jonathan Adel Cairo, Egypt
4
Followers
Third-Party API & Payment IntegrationJonathan Adel
Starting at$150
Duration1 week
Tags
ExpressJS
Firebase Authentication
Node.js
PayPal
Stripe
TypeScript
Cover image for Third-Party API & Payment Integration
What I Build: Integrations that connect your existing website or app to outside services — payment processing, email/SMS, third-party APIs, or automated workflows between systems that need to talk to each other.
What You Get:
Working payment processing your customers can actually use (checkout, subscriptions, refunds)
Reliable connections to the third-party services your business depends on
Secure handling of API keys, tokens, and sensitive data
Automated workflows that remove manual, repetitive tasks
Clean error handling so failed payments or API calls don't go unnoticed
Integration built to fit into your existing codebase, not bolted on awkwardly
Tech Stack & Tools:
Payments: Stripe, PayPal
Communication: Twilio, SendGrid, Resend, Nodemailer
CRM & Automation: HubSpot, Zapier-style webhook logic
Backend: Node.js, Express.js, Next.js server actions
Other: REST API design, OAuth, webhooks, Git/GitHub, AWS
What's Included:
Review of your existing codebase and the integration you need
Full setup and testing of the third-party service or payment flow
Secure handling of credentials and sensitive data
Webhook setup where the integration requires real-time updates
Post-delivery bug fixing for anything tied to my work — no time limit
Ideal For: Businesses with an existing website or app that need to accept payments, connect to a CRM, send automated emails/SMS, or integrate any third-party service reliably and securely.
Pricing: Scoped based on the integration's complexity — most work in this tier ranges from $150-$600. I'll review your request and confirm a price before starting.
FAQs

$150