I will fix or develop API integration, oauth2, supabase, notion CRM, webhook automation

D
david_websss
D
david_websss
David
fix or develop API integration, oauth2, supabase, notion CRM, webhook automation
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fix or develop API integration, oauth2, supabase, notion CRM, webhook automation

About this gig

FIX OR BUILD POWERFUL API INTEGRATIONS, WEBHOOKS & AUTOMATION


Are you struggling with a broken API, failing webhook, OAuth2 errors, or data not syncing properly?


Most businesses lose time, money, and customers because their systems dont communicate correctly.


That's where I come in.


WHAT I HELP YOU FIX & BUILD:

I specialize in API integration, automation, and backend systems that actually work fast, secure, and scalable.


  • Fix broken API integrations, webhook failures, and sync issues
  • Develop custom REST APIs (JSON, XML, OAuth2, JWT)
  • Supabase backend setup (auth, database, real-time sync)
  • Notion CRM integration & automation workflows
  • Webhook automation (real-time triggers & data flow)
  • Third-party integrations (Stripe, Shopify, CRM, SaaS tools)
  • Debugging authentication, rate limits, and timeout issues


WHY BUYERS CHOOSE ME


  • I fix what others couldn't
  • Clean, scalable, production-ready code
  • Fast communication & quick turnaround
  • Deep understanding of real-world API problems
  • Focused on results, not just code


Send me a message with your requirements, and I'll guide you to the best solution quickly.

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • JavaScript

  • Frontend framework

    • Bootstrap
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Laravel
    • Express.js
    • FastAPI
    • NestJS
    • Node.js

Get to know David

David

Senior Website Developer

  • FromUnited Kingdom
  • Member sinceApr 2026
  • Avg. response time2 hours

  • Languages

    English
Hi there! I design conversion-focused WordPress websites for service businesses, coaches, and startups. From booking systems (Amelia/Bookly) to directory platforms and LMS websites, I don’t just build sites, I build systems that generate leads, automate bookings, and drive revenue. Clean, modern UI/UX Fast loading & mobile optimized SEO-ready structure Built for real business results If your website isn’t converting, I’ll fix it, or rebuild it the right way.

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