About

A founder who built the whole engine.

I'm Devon Kellar. I build revenue systems for B2B teams: the data foundation, the enrichment, the outbound campaigns, the CRM plumbing, wired together so it keeps producing after I leave.

I've spent 12+ years in B2B sales and bootstrapped three companies to $5M+ combined revenue. At SmartBound, the B2B outbound agency I co-founded, I built the GTM engine end to end and took it from zero to $300k+ in year one. One automated campaign there closed $70k+ over twelve months, because it was a durable system, not a blast.

Now I do the same thing for clients. I'm Top Rated on Upwork for GTM Engineering with 20+ clients served, and a graduate of Clay's third cohort, the certification program for the tool at the center of most of my builds.

Devon Kellar Devon, in the workshop Top Rated
Upwork
Clay
Cohort 3
12+ yrs

B2B sales & GTM

$5M+

bootstrapped, 3 companies

$300k+

built from zero, year one

20+

clients on Upwork

Credentials

Provable, not claimed.

Upwork

Top Rated · GTM Engineering

Top Rated freelancer on Upwork for GTM Engineering, with 20+ clients across SaaS, cybersecurity, CRE and data ops. Every review is public.

View the profile Top
Rated
Clay

Clay Cohort 3 graduate

Trained and certified in Clay's third cohort. Clay sits at the center of most systems I build: enrichment waterfalls, signal scoring, list building at scale.

Cohort
Three
The stack

Built with real tools

Clay, Claude Code, n8n, Smartlead and Instantly, Salesforce and HubSpot, plus custom API integrations. Documented so your team can run it without me.

Hand
Built
Ready when you are

Let's build your system.

A 30-minute call. We'll find where your pipeline leaks and whether I'm the right person to fix it.

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