HubSpot Integration Services
HubSpot's API is pleasant to work with and has specific constraints that shape any serious integration: how it deduplicates contacts, how objects associate, and rate limits low enough that a naive loop will fail.
Discuss your projectThe three things that shape a HubSpot integration
Contacts deduplicate on email address. That is HubSpot's model and it has consequences worth understanding before you push data: two people sharing an address become one contact, a contact with no email cannot be deduplicated reliably at all, and changing a contact's email changes the key you were matching on. Where you need a different identity rule, the practical approach is a custom property holding your own system's ID and matching on that instead.
Associations between objects are their own API with their own structure, and labelled association types matter if you model anything beyond a contact belonging to a company. Pushing a deal without correctly associating it to its contact and company produces records that look fine in the API and are useless in the interface, which is a common and confusing outcome.
Rate limits are the constraint that catches most integrations in production rather than in testing. They are low enough that iterating over a few thousand records with one request each will exhaust your allowance. The answer is the batch endpoints, which accept many records per call, plus a queue so a backlog drains at a sustainable rate rather than failing. Because HubSpot's published limits vary by subscription tier and change, we check your account's actual allowance rather than assuming.
What we build
Lead capture into HubSpot
From your own forms, chat, or voice agents — as structured properties with the original source preserved, which is what makes attribution reporting possible later.
Two-way contact and company sync
With explicit ownership per field, so your application and HubSpot do not overwrite each other. The field-ownership document comes before the code.
Deal and pipeline sync
Deals created and stages advanced from events in your own system, correctly associated to contacts and companies.
Custom objects
Where your business has an entity HubSpot does not model. Available on higher tiers only, so we confirm your subscription supports it before designing around it.
Timeline events
Your application's activity shown on the contact record, so your sales team sees product usage without leaving HubSpot. One of the highest-value and least-used integrations available.
Workflow triggers
Your system's events enrolling contacts in HubSpot workflows, so the automation your marketing team already built keeps working.
Built for reliability
- Batch endpoints by default rather than per-record calls, which is the difference between an integration that scales and one that hits a limit.
- A queue with backoff, so hitting the rate limit delays work rather than dropping it.
- Webhook signature verification on anything HubSpot sends you, and idempotent handling because webhooks arrive more than once.
- Your own system's ID stored as a HubSpot property, so records can always be matched back regardless of email changes.
- Loop prevention, so a write to HubSpot that echoes back does not trigger another write out.
- A scheduled reconciliation reporting records that exist on one side and not the other.
Common questions
Tell us what you need
Describe the problem and we will come back with scope, timeline, and a rate. No obligation to proceed.
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