Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get custom API integrations and automation solutions

Genadiy R.Status: Offline
Genadiy R. Genadiy R.
4.9
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Genadiy, priced and ready to go.
Genadiy R.Status: Offline
Genadiy R. Genadiy R.
4.9
Top Rated
Preview image

Let a pro handle the details

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

Project details

I build custom API integrations that connect your business systems and automate workflows.
I have a lot of experience integrating platforms such as Stripe, HubSpot, Shopify, QuickBooks, OpenAI, Twilio, GoHighLevel, Zoho etc, I help businesses eliminate manual processes and create efficient data flows between applications.

I build a reliable architecture, secure authentication, clean code, and scalable solutions. Whether you need CRM automation, payment processing, AI integrations, e-commerce connections, or custom business workflows, I can build an integration exactly as you need.
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$500
Standard
$1,500
Advanced
$3,500
Delivery Time 3 days 7 days 12 days
Number of Revisions
233
Number of Pages
135
Design Customization
Content Upload
Responsive Design
Source Code
Optional add-ons You can add these on the next page.
add one more API integration (+ 3 Days)
+$400
4.9
616 reviews
95% Complete
(587)
4% Complete
(22)
1% Complete
(6)
1% Complete
(0)
1% Complete
(1)

SW

Samuel W.
5.00
Aug 21, 2026
Doing some add-ons on the Google Sheet.

CE

Christoffer E.
5.00
Jul 18, 2026
App: Refine, improve, and debug listing software Very responsive, great communication. Genadiy has been capable with every project we give him.

JL

James L.
5.00
Jul 17, 2026
Google scripts shopify integration ERP

GA

Gal A.
5.00
Jul 15, 2026
Google Sheets Apps Scripts supporting

TG

Tyler G.
5.00
Jul 10, 2026
Google Sheets Automation & Calendar Integration Once again, great work and able to work with even my vague descriptions. Thank you so much!
Genadiy R.Status: Offline

About Genadiy

Genadiy R.Status: Offline
Senior Full-Stack Engineer | AI, Automation & API Integrations
100% Job Success
4.9  (616 reviews)
Batumi, Georgia - 4:01 pm local time
I help businesses automate their workflows, connect different systems into one ecosystem, and build custom software that saves time.

I'm a Senior Full-Stack Developer with 30+ years of software development experience, specializing in web applications, AI integrations, business automation, APIs, and custom internal systems.

Whether you need a web platform, a mobile app, an AI-powered assistant, or complex integrations between multiple services, I build solutions that are scalable and designed for long-term growth. A lot of my work also focuses on building practical solutions using APIs, Google Sheets, and AI tools.

What I build:
Full-stack web applications
Business automation platforms
Automating business workflows
AI-based tools (ChatGPT, OpenAI, Whisper, AI Agents, etc.)
API integrations for connecting APIs between different platforms
SaaS products, web applications, and backend systems
CRM & ERP integrations
Internal business systems and admin panels
Admin dashboards, reporting & analytics systems
Mobile applications (Flutter, AppSheets)
Google Workspace & Google Sheets automation
E-commerce integrations

Frontend: React, Next.js, JavaScript, TypeScript, HTML, CSS
Backend: Node.js, Python, PHP, Google Apps Script
Databases: MySQL, PostgreSQL, SQL Server, MongoDB, Firebase
Cloud & APIs: REST APIs, GraphQL, OAuth, Webhooks, Google Cloud, AWS
AI: OpenAI API, ChatGPT integrations, AI assistants, LLM-based workflows, speech-to-text solutions (Whisper)

I've built integrations with platforms including:
Shopify • Stripe • QuickBooks • HubSpot • Salesforce • GoHighLevel • Zoho • Twilio • Meta/Facebook • Google Workspace • Trello • Pipedrive • Mailchimp • Telegram • WhatsApp • Airtable • Notion • and many others.

I prefer simple, safe solutions that solve real business problems. In most cases, I choose custom development over no-code tools because it gives more flexibility and long-term stability.

I'm available for both short-term projects and long-term partnerships involving:
• Full-stack web development
• Business process automation
• AI implementation
• API integrations
• SaaS development
• Mobile applications
• System architecture
• Internal business platforms

Steps for completing your project

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

Delivery time starts when Genadiy receives requirements from you.

Genadiy works on your project following the steps below.

Revisions may occur after the delivery date.

Requirements Analysis & API Review

Integration Planning

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