Mathew Joseph
I help founders move beyond referral-only pipeline by building a repeatable outbound system their team owns and runs.
GTM engineer since 2024: outbound systems for B2B teams as a freelancer, then for RevenueFlow's clients. Since June 2025, as GTM engineer at Cerebrium, a YC-backed AI infrastructure company, I have built its go-to-market system from nothing: enrichment and qualification in Clay, HubSpot beneath it and the outbound on top. Its CEO has publicly cited a 35% LinkedIn reply rate against a 2-4% norm.
25/25
Clay Solutions Partner exam
Mathew's number$100K
new MRR into pipeline, per CEO
Mathew's number55%
LinkedIn reply rate vs 2-4% norm
Mathew's numberWork
Reviewed inside a cohort where it says so. Numbers are the student's.Skill map
0 Clay use cases proven, 6 shared. Tap or hover one to see the proof and what it is built from.Crawl
Clean, scored data you can trust
Walk
Automations that run without you
Run
Signals and reps working the same system
Data foundation
Reachable accounts and contacts, lower tool spend
- Shared exampleScreening and enrichment of incoming accounts in Clay before HubSpotOct 2026
- First-party data and CRM lookup
- Account enrichment
- Contact enrichment
- Normalization and dedupe
- CRM writeback
- Shared exampleTiered qualification against the company's own criteria in ClayOct 2026
- First-party data and CRM lookup
- Account enrichment
- AI research with Claygent
- Signals
- Fit and intent scoring
- CRM writeback
Grow pipeline
Outreach volume, reply rate and speed to lead
- Shared exampleA classifier that judges every inbound conversation against the ICPOct 2026
- Webhook and form intake
- First-party data and CRM lookup
- Contact enrichment
- Account enrichment
- Fit and intent scoring
- Routing and assignment
- AI copywriting
- Functions and Workflows
- CRM writeback
- Rep alerts and handoff
- Idempotency and recovery
- Measurement
- Shared exampleOutbound campaigns running off the qualified pipelineOct 2026
- Contact search and buying committee
- Contact enrichment
- AI research with Claygent
- ICP and campaign brief
- Suppression and exclusions
- Fit and intent scoring
- AI copywriting
- Outbound delivery
- Credit economics
- Shared exampleLinkedIn outbound sourced from engaged audiences, qualified in ClayOct 2026
- Contact search and buying committee
- Signals
- Contact enrichment
- Suppression and exclusions
- Fit and intent scoring
- AI copywriting
- Functions and Workflows
- Outbound delivery
- Idempotency and recovery
- Shared exampleProduct sign-up and usage events routed through Clay enrichment into HubSpotOct 2026
- First-party data and CRM lookup
- Account enrichment
- Fit and intent scoring
- Routing and assignment
- AI copywriting
- Functions and Workflows
- Rep alerts and handoff
Building blocks
0 proven. The Clay skills every use case is made of. Tap or hover a use case to see its recipe.