CRM Migration & Integration
Zero-downtime migration and two-way sync between CRMs and business tools.
Overview
Zero-downtime migration and two-way sync between CRMs and business tools. I mapped and migrated contacts, deals and activity between the CRMs with validation and de-duplication, then built a two-way sync via APIs and webhooks so the CRM, marketing tools and back office stay consistent — with a rollback-safe, staged cutover. Built with Node.js, Salesforce, HubSpot, Webhooks, this api integration project was delivered for a client in Worldwide and designed for reliability, a clean user experience and long-term maintainability — so it keeps delivering value well after launch.
The challenge
A company switching CRMs risked losing history and breaking the integrations their operations depended on.
What I built
I mapped and migrated contacts, deals and activity between the CRMs with validation and de-duplication, then built a two-way sync via APIs and webhooks so the CRM, marketing tools and back office stay consistent — with a rollback-safe, staged cutover.
Key features
- Documented, versioned endpoints
- Secure authentication (OAuth / JWT)
- Idempotent webhook handling
- Rate limiting and retries
- Clear error contracts
- Reliable third-party connections
The results
- Full history migrated cleanly, nothing lost
- Two-way sync keeps every tool consistent
- Safe, staged cutover with no downtime
This is an example of my api development & integration work. Need something similar? Start a project →
My delivery process
Discovery
We start by understanding the goal, the users and the constraints — no jargon, just a clear picture of what success looks like.
Plan & design
A clear scope, architecture and milestone plan, so you know exactly what's being built and when.
Build & iterate
Development in reviewable increments with regular updates, so you see working software early and often.
Launch & support
Testing, deployment and ongoing support, so it keeps running smoothly long after go-live.
CRM Migration & Integration — FAQ
Can you build a crm migration & integration for my business?
Yes. I build custom api integration solutions like this crm migration & integration, using Node.js, Salesforce, HubSpot, Webhooks and tailored to your exact workflow, timeline and budget. Send me your requirements and I'll reply with a clear plan and quote.
How much does a project like this cost?
It depends on scope. After a short discovery call I provide a clear, fixed quote and milestone plan before any work begins — no surprises. Smaller builds start low; larger platforms are quoted per milestone.
How long does it take to build?
A focused MVP can take a few weeks, while a larger api integration build runs in milestones over a couple of months. You'll see working software early and often, not just at the end.
What technology do you use, and will I own it?
This project uses Node.js, Salesforce, HubSpot, Webhooks. I pick the right stack for each project, and you own 100% of the code and infrastructure — delivered in your own repositories and accounts.
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Want something like this built?
Tell me about your project and I'll get back to you within 24 hours. Prefer to chat? Message me on WhatsApp.