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william_aiwe

William A

@william_aiwe

Stripe, Shopify and REST API Integration Expert

United Kingdom
English, German, Spanish, French
About me
I help businesses fix website errors, build API integrations, and improve web app performance for speed and reliability. I specialize in Stripe API, Shopify API, REST APIs, and webhook automation, creating secure backend systems for modern apps. Using PHP, JavaScript, Python, Firebase, and Supabase, I develop, troubleshoot, and automate workflows with clean data sync. If you need a reliable backend or API integration expert to build, fix, or improve your system, I’m ready to help.... Read more

Skills

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william_aiwe
William A
Offline • 
Average response time: 7 hours

See my services

API & Integrations
I will fix or build stripe API, shopify API, and rest API integration
From$25 / projectMore details
API & Integrations
I will integrate stripe API, rest API, oauth2, jwt authentication and webhooks
From$25 / projectMore details

Portfolio

Work experience

Fiverr

API Integration and Backend Developer

Fiverr • Freelance

Mar 2022 - Present • 4 yrs 5 mos

I specialize in building and maintaining secure, scalable API integrations and backend systems for modern web applications. My work includes Stripe payment integration, Shopify API development, REST API architecture, and webhook automation for real-time data synchronization. I design and troubleshoot backend systems using PHP, JavaScript, Python, Firebase, and Supabase, ensuring high performance, security, and reliability. I also help businesses fix website errors, optimize API workflows, and automate business processes through custom integrations. My focus is delivering clean, production ready solutions that improve system efficiency, reduce manual work, and support business growth through automation and stable backend infrastructure.