Most outbound stacks pile on tools and spray emails. We build outbound voice agents that actually have the conversation, paired with enrichment pipelines that keep the list and the CRM in sync with reality.
What is running
An outbound voice agent that calls corporate-travel prospects, qualifies them on the phone, and writes the result directly into HubSpot. Built and run on Fly.io for a corporate-travel client, and since generalized into a template we can point at another sector.
Our own multi-tenant lead enrichment API and worker queue, deployed on Hetzner. Takes a domain or a list, returns decision-makers, firmographics, and contactable signal — at the price of a coffee per record, not a SaaS seat.
The unsexy plumbing that makes the rest work — keeping contacts, deals, and call notes consistent between your CRM, the enrichment layer, and the voice agent. Built with idempotent syncs and audit logging.
How it fits together
01
Define the ICP
Audit-driven targeting, not a TAM dump.
02
Enrich the list
WalterFetch returns decision-makers + signal.
03
Have the call
Outbound voice agent qualifies on the phone.
04
Write it back
Notes, score, and next step land in the CRM.
Stack we have shipped against
Most teams already have one of these pieces in place. The audit tells you which one is worth replacing first and what the 30-day build looks like.
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