Websites that perform
Custom WordPress themes and plugins, responsive and fast, that look right on phones, tablets, retina displays and large screens.
Digital marketing experts with technical smarts and marketing savvy, working as a critical extension of your in-house team since 2004.
Trusted by big and small clients alike















Third Arm serves as a critical extension to in-house marketing teams, providing best-in-class technical solutions backed by a passion to put customers first.
Third Arm was started by David Weinfeld, an award-winning marketing expert and engineer with an MS in Mechanical Engineering.
What’s our secret sauce? An experienced team of brilliant developers, led by Habib Nawaz, who share the same customer-service obsession as our founder.
Read more about us
Working side by side with our clients, we advise on and implement outcome-oriented solutions across a full stack of marketing technology.
Custom WordPress themes and plugins, responsive and fast, that look right on phones, tablets, retina displays and large screens.
Storefronts and templates built to convert, with integrations that keep customers coming back.
Email, CRM and marketing automation connected end to end.
SEO foundations and Google Ads campaigns, measured to the conversion.
Wireframes, mockups and user-centered design, coded pixel-perfect.

Working with David and the Third Arm Marketing Team over the past seven years, and launching our new BigCommerce site with them, we’ve seen our conversion rate more than double and our web sales increase at an even larger rate. The MailChimp integration has been more effective than we even hoped for and keeps our current customers coming back! Highly recommended!

Our team has had the pleasure of working with Third Arm for the past two years. They have been so awesome to work with in terms of knowledge, responsiveness and general creativity! Our website wouldn’t be the same without them! We feel so lucky to have been connected with them!

David and Third Arm Marketing played a key role as we transformed our business during the pandemic. He provided us with guidance and solutions as we developed and launched our new products. They are true WordPress specialists and full-stack technology experts.
Widely recognized as the leading tool for marketing and marketing automation, Mailchimp is a perfect addition to Third Arm’s technology stack.










20 years of experience leveraging best-in-class technologies and implementing right-sized solutions.
Brilliant developers with the same customer-service obsession as our founder. Meet everyone
Tell us what you’re working on. We’ll bring the technical smarts and the marketing savvy.