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Ivan A.
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Ivan A.

API Integration & Full Stack Developer | AI & Workflow Automation

I help SaaS founders and service businesses connect the software their operations depend on: payments, bookings, customer communications, and internal tools. My work focuses on the processes between those systems, how a booking becomes a payment, how customer data reaches the right application, and how teams manage the next step without copying information between tools. Here are examples of projects I’ve worked on: • Equipment rental: integrations involving Atera, Stripe, Google Workspace, Slack, and Klaviyo, alongside an OpenAI-powered assistant. • Hospitality and bookings: Checkfront and Stripe integrations supporting reservation and payment workflows. • Manufacturing operations: development and architecture work on an order management system, including backend services, background jobs, and integrations. • Subscription software: Bubble and Supabase development for a lead-generation platform with subscription billing. • Private investor networks: an AI assistant integrated into a deal-sharing product. I can help you: • Connect third-party APIs to your application. • Build backend workflows for payments, subscriptions, bookings, and notifications. • Synchronize data across your product and business tools. • Investigate and improve existing integrations. • Add AI assistants that interact with your application’s data and tools. • Extend Bubble applications with custom APIs and backend services. My main stack is TypeScript, Node.js/NestJS, Next.js, PostgreSQL/Supabase, and Bubble. I also have experience with Laravel/PHP, Redis, and BullMQ. I start by understanding your existing workflow, the systems involved, and the business rules the integration needs to follow. From there, I work through implementation, testing, and the operational details: authentication, failed requests, data consistency, and ongoing maintenance. If your team is moving information manually between tools, or an existing integration is holding up your operations, tell me which systems you use and what needs to happen between them.

🇨🇴Medellin, Colombia$20/hr100% JSS5.00 (8)Since Dec 2017

Earnings and projects

MRR
$532

Last 6 months ÷ 6

World#75,437 / 412k
🇨🇴Country#1,003 / 4,578
Revenue, last 30 days
$0

Last 6 months: $3.2k

Total earnings
$65k

Billed in all: $68k

World#60,797 / 412k
🇨🇴Country#472 / 4,578
Per project
$5k

$1.6k in the last 6 months

World#34,895 / 412k
🇨🇴Country#434 / 4,578
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇨🇴Country#773 / 4,578
Projects in all
13

Across 22 contracts

5% fixed95% hourly
World#175,712 / 412k
🇨🇴Country#998 / 4,578

Earnings, last 30 days

$67.6kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$66k$67k$68k$69kOct 8Oct 23Nov 7

Skill rankings: Top 12% in Bootstrap

Ranked by MRR among everyone on Upwork with the skill.

  1. #9Flexbox70 freelancers · 🇨🇴 #1Top 13%
  2. #27Database Modeling156 freelancers · 🇨🇴 #1Top 17%
  3. #148Bubble.io749 freelancers · 🇨🇴 #4Top 20%
  4. #274MySQL Programming2,017 freelancers · 🇨🇴 #3Top 14%
  5. #835Bootstrap6,899 freelancers · 🇨🇴 #4Top 12%
  6. #1,228CSS 39,914 freelancers · 🇨🇴 #4Top 12%
  7. #1,231Supabase4,116 freelancers · 🇨🇴 #9Top 30%
  8. #1,266Vue.js8,267 freelancers · 🇨🇴 #11Top 15%