Rajesh K.
Certified HubSpot Developer | Custom Development | API Integrations
👋 Hi, I'm Rajesh Kumar, Top Rated + Full-Stack CMS & Web Developer 🚀 HubSpot Developer | Wordpress Development | API Integrations | Webflow Development I help B2B companies, SaaS businesses, and service-based organizations build custom HubSpot solutions that go beyond standard CRM features. My focus is custom HubSpot development, API integrations, CRM automation, custom objects, private apps, and data synchronization, connecting HubSpot with the systems your business already uses. I don't just configure HubSpot. I build the custom technology needed when HubSpot's native functionality isn't enough. 🔧 Custom HubSpot Development * Custom HubSpot CRM applications * CRM cards and UI extensions * Custom objects and custom properties * HubDB and dynamic data solutions * Custom workflows and automation * Private apps and custom integrations * Serverless functions * Custom admin tools and internal applications * OAuth 2.0 authentication * REST API integrations 🔗 API & System Integrations I build reliable integrations between HubSpot and external platforms, including: * Two-way data synchronization * Contact and customer data sync * Purchase and enrollment data * Custom object synchronization * API-based fulfillment systems * OAuth authentication and token management * Scheduled data synchronization * Error handling and exception reporting I recently built a custom Kajabi ↔ HubSpot integration, where course enrollment, contact information, purchases, subscription status, and lifetime value are synchronized between both systems. The solution included HubSpot UI extensions, custom objects, OAuth 2.0, Kajabi's Public API, serverless functions, CRM write-through logic, and a GitHub Actions backfill process. ⚙️ CRM Automation & RevOps I can also help connect your custom development with your revenue operations: Lead → Qualification → Sales → Deal → Customer → Reporting Including: * Lead routing and qualification * Lifecycle automation * Deal and pipeline automation * Marketing-to-sales handoff * Custom CRM workflows * Reporting and dashboards * Data cleanup and synchronization * Automated notifications and task creation 🌐 HubSpot CMS & Website Development I also develop conversion-focused websites and landing pages using: HubSpot CMS · WordPress · Webflow · Shopify** Including custom modules, templates, API-driven content, forms, tracking, and integrations. 💡 When to hire me I'm a good fit when you have a requirement like: "HubSpot doesn't support this natively. Can you build it?" If you need a custom HubSpot application, API integration, CRM automation, data synchronization, or a complete solution connecting HubSpot with your existing systems, I can design and develop it end-to-end. Let's build a HubSpot system around your business—not force your business into HubSpot's limitations. Best Regard Rajesh
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $7k
Billed in all: $34,715$35k
$2.3k in the last 6 months
Across 68 contracts
Earnings, last 30 days
Skill rankings: Top 9% in Website Builder
Ranked by MRR among everyone on Upwork with the skill.
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