You will get an enterprise HubSpot API integration and data sync
Project details
Is your CRM data a mess? When your business scales, basic automation tools like Zapier begin to fail. Webhooks get dropped, API rate limits are exceeded, and you end up with duplicate contacts and lost leads.
As an Enterprise Backend Architect, I build native, high-performance HubSpot API integrations directly into your NodeJS, React, or custom web application. I do not rely on fragile third-party connectors.
I engineer secure, bi-directional data pipelines that guarantee zero data loss. Whether you need to map complex Custom Objects,
trigger automated Deal Stages, or sync millions of historical records from legacy platforms, I ensure your marketing and sales teams have perfectly accurate data 100% of the time.
Don't let your marketing budget go to waste because of a broken backend connection. Send me an Upwork message today and let's bulletproof your HubSpot CRM.
As an Enterprise Backend Architect, I build native, high-performance HubSpot API integrations directly into your NodeJS, React, or custom web application. I do not rely on fragile third-party connectors.
I engineer secure, bi-directional data pipelines that guarantee zero data loss. Whether you need to map complex Custom Objects,
trigger automated Deal Stages, or sync millions of historical records from legacy platforms, I ensure your marketing and sales teams have perfectly accurate data 100% of the time.
Don't let your marketing budget go to waste because of a broken backend connection. Send me an Upwork message today and let's bulletproof your HubSpot CRM.
Web Programming Project
API Development, API IntegrationProgramming Languages
PHP, JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$95
|
Standard
$295
|
Advanced
$895
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 14 days |
Number of Revisions | 2 | 3 | 5 |
Source Code |
Optional add-ons
You can add these on the next page.
Legacy CRM Data Migration
(+ 5 Days)
+$250
Advanced Error Alerting System
(+ 2 Days)
+$95Frequently asked questions
3 reviews
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CA
Christopher A.
Jun 5, 2023
Seeking HubSpot API Expert to create Custom Card that populates object property value from JSON
Krunal was great to work with. Very knowledgeable and great communication.
NG
Nimit G.
May 2, 2023
Lead Flow Process Optimization- HubSpot+Webflow+ZoomInfo Integration
Krunal was really helpful and finished the task quickly. He was communicative and ensured that the problems were taken care of. The deadlines were met and the complete project was delivered. I'll recommend his services.
JB
Jordan B.
Dec 28, 2021
WordPress Theme / Site Speed Expert
Krunal is the best freelancer I’ve worked with in 8+ years. It's immediately clear that he's an expert in his field, and he went far above my job requirements to ensure I was satisfied with every aspect of his work.
Krunal's task was to improve my website speed, and he took my Google Lighthouse speed scores up to 90+ (on mobile) and 95+ (on desktop) on virtually every page. He asked thoughtful questions throughout the project to ensure he was making the right decisions, and at the end of the project, we had a 30-minute call where he explained all of the changes he made and answered my questions about those changes.
I am extremely satisfied with Krunal's work and will hire him again whenever I get a chance. If you have the opportunity to work with Krunal, you will not be disappointed.
Krunal's task was to improve my website speed, and he took my Google Lighthouse speed scores up to 90+ (on mobile) and 95+ (on desktop) on virtually every page. He asked thoughtful questions throughout the project to ensure he was making the right decisions, and at the end of the project, we had a 30-minute call where he explained all of the changes he made and answered my questions about those changes.
I am extremely satisfied with Krunal's work and will hire him again whenever I get a chance. If you have the opportunity to work with Krunal, you will not be disappointed.
About Krunal
Senior Full-Stack Architect | GenAI (Gemini) | Angular/React | Node.js
Vadodara, India - 3:31 am local time
I spent the last 10 years fully dedicated to that role as Technical Lead — heads-down, shipping, not bidding on Upwork. I'm opening up capacity for new projects again now, bringing current, production experience in Node.js, React, Angular, and Google Gemini-powered AI features straight from active enterprise work.
⚙️ WHAT I DO
• Architecture & Leadership — Full SDLC ownership: database schema design, code quality standards, and delivery management for distributed teams.
• Enterprise Platforms & LMS — Built and scaled internal operational hubs, SaaS scheduling systems, and large LMS platforms, with multi-tier RBAC for different employee and learner roles.
• Generative AI Integration — Production use of the Google Gemini SDK and AI Studio for automated content engines, adaptive testing tools, and AI-assisted curriculum generation.
• Legacy Modernization — Migrating monolithic systems into decoupled, type-safe architecture without halting feature delivery mid-transition.
• Performance & Infra — Serverless via Firebase, background job processing with BullMQ/Redis, server administration (WHM/cPanel, SSL).
🛠️ TECH STACK
Frontend: Angular, React, TypeScript, Tailwind CSS, PWA
Backend: Node.js, Express, PHP (Laravel, Slim)
Data: PostgreSQL, MySQL, Firestore, Redis, BullMQ
AI / Cloud: Gemini API, Google AI Studio, Ollama, Firebase, Cloudflare
If you need someone to map out the architecture, own the backend logic, or both — send me what you're building. I'll give you a direct, specific read on scope within a few hours, not a generic pitch.
Steps for completing your project
After purchasing the project, send requirements so Krunal can start the project.
Delivery time starts when Krunal receives requirements from you.
Krunal works on your project following the steps below.
Revisions may occur after the delivery date.
Data Mapping & Architecture
We will define the exact schema, mapping out how your custom app's database fields correlate to HubSpot Contacts, Companies, Deals, and Custom Objects.
Native API Integration
I will write clean NodeJS scripts using HubSpot's REST API. I will implement queuing mechanisms and error handling to ensure we never hit API rate limits.