I will build custom hubspot workflow code and API integration

Yes. That is the core of this gig. I write JavaScript or Python custom code actions that run on each enrolled record, with defined inputs and outputs so later workflow steps can use the result. Note that custom code actions need Data Hub (formerly Operations Hub) Professional or Enterprise.

Custom code actions and webhook triggers require Data Hub Professional or Enterprise, the hub previously called Operations Hub. They are not on Free or Starter. If you are on a lower tier, I can usually do the same job with a private app plus n8n or Make. Send your tier and I will confirm.

Yes, two-way or one-way. I map objects and properties first, agree the source of truth per field, then build the sync with conflict rules so neither system overwrites good data. Salesforce, Pipedrive, Zoho and Dynamics are all doable via the HubSpot CRM API v3.

Yes. Bidirectional syncs need a source of truth per field, an ID map between systems, and loop protection so an update in one system does not bounce back forever. I set all three up and document them. This is the part most broken syncs are missing.

Yes. Common builds: Stripe payments and subscriptions into HubSpot deals and line items, QuickBooks or Xero invoices synced to companies, and payment status writing back to deal stages. I handle webhook signatures and idempotency so a retried event does not double-charge your data.

Whichever is cheaper to run and easier for you to maintain. Simple triggers go in a native workflow. Mid-complexity logic goes in n8n or Make. Heavy transforms, custom objects and high volume go in code. I tell you which one I picked and why before I build.

Yes, whenever your portal has one. I build and test in the sandbox, send you screenshots of the run logs, and only deploy to production after you sign off. If you have no sandbox, I test against a small filtered list of records first.

A user seat with Automation and Data Management permissions, plus a private app I create with only the scopes the build needs. I never ask for your password. If your security policy blocks new seats, I can work through a screen share and hand you the code to paste.

Yes, and it is a large part of what I do. Send me the workflow, the error logs and what you expected to happen. I audit first, tell you whether it is worth patching or rebuilding, and quote from there. No blind rewrites.

Batch endpoints where possible, exponential backoff on 429s, and idempotency keys so retries do not duplicate records. HubSpot retries a failed custom code action for up to three days. I add error logging and an alert so a silent failure does not surface a month later.