David Johnston, co-founder of DoorSpot and founder of CodeGuild AI, always believed that building an audience mattered—but like many founders, he knew he wasn't going to consistently create content on his own.
Between running multiple companies and building products, LinkedIn always fell to the bottom of the priority list.
By partnering with Windmill Growth, David was able to consistently share his ideas without adding another responsibility to his plate. He transformed his LinkedIn presence into a powerful platform for growing his personal brand and attracting new opportunities.
From working with Windmill Growth, David achieved:
✓ 1.6+ million LinkedIn impressions
✓ 18,134 engagements
✓ 398% increase in followers
✓ 97,519% increase in impressions
✓ 113,238% increase in engagements
✓ Generated investor interest, product inquiries, and valuable industry connections
Great Ideas Don't Grow Your Personal Brand if They Stay in Your Head.
As the founder of CodeGuild AI and DoorSpot, David had no shortage of ideas worth sharing.
He already believed in the long-term value of building an audience and knew that trust is one of the most valuable assets a founder can have.
"I've always realized that audience is important," David explains. "A personal brand can be used to build trust, not only awareness."
The challenge was finding the time to come up with content ideas—and consistently turning those ideas into posts while running multiple businesses.
"I was never going to commit enough to do it on my own."
That's where Windmill Growth came in.
Making Personal Branding Feel Effortless
Instead of expecting David to spend hours planning content every week, Windmill built a process around his schedule.
Some weeks he arrived with several ideas.
Other weeks he walked into meetings with nothing prepared.
"The only thought I usually had before our meeting was, 'It's 12:29.’ And yet I was still very happy with the outcome."
Every conversation was guided with thoughtful prompts that helped David naturally talk through ideas, while Windmill transformed those conversations into polished LinkedIn content that always sounded like him.
"I think you do an exceptional job on the copy."
"The style of conversation we have is very different from the majority of conversations I have every day."
"It becomes a reflective period for me. I usually leave with clarity on other things too. I walk away with a set of clear decisions on other things I'm working on."
The process didn't just create better content.
It gave David space to think.
From Consistent Content to Consistent Growth
Within months, David's LinkedIn presence grew dramatically.
✓ 1.6+ million impressions
✓ 18,134 engagements
✓ 398% increase in followers
His top-performing posts reached:
• 168K impressions
• 151K impressions
• 123K impressions
• 122K impressions
• 117K impressions
More importantly, the visibility created real business opportunities.
David reconnected with former investors, generated new interest in CodeGuild AI, received podcast invitations, and created conversations with people who otherwise wouldn't have known his work.
"I had investor activity."
"I had validated interest in products."
"I had people reaching out and following up."
"I reconnected with people I hadn't connected with in a long time."
More Than a Vendor—A True Partner
While David was impressed by the growth, what stood out even more was the experience of working with Windmill.
"The work has been exceptional."
"It's blown me away."
"It exceeded all expectations."
He describes the relationship as something much different than a typical agency engagement.
"This isn't a word I use very often, but it truly felt like a partnership."
He also credits his copywriter for making every content session productive and enjoyable.
"At the beginning, this was very challenging for me. Now it isn't. I really credit that to your approach and the way you've handled the process."
Why David Wouldn't Choose Anyone Else
David said he would never consider working with any LinkedIn branding company other than Windmill Growth.
Combined with a responsive team, effortless communication, and content that always felt authentic, the experience became something David rarely associates with outside vendors.
"It just felt like we were one big team."
For David, the biggest value wasn't simply growing on LinkedIn.
It was having a trusted partner who made personal branding easy, authentic, and sustainable—while delivering results that far exceeded his expectations.
