Case studies.
Case study · CRM build · October 2026
Fonetic English: 720 people in one place, in under two weeks.
How Groundswell gave Fonetic English, a Sydney EdTech, one place for every lead in Attio in under two weeks. Test sign-ups now land in seconds, with a task to follow up.
Case study · Outbound rebuild · June to September 2026
An outbound rebuild.
How Groundswell audited and rebuilt Deligatr’s outbound estate: bounce from 17% to 2.3%, a campaign replying at 11.2% with no bounces, every reply routed into the CRM.
Other testimonials
5.0 from 8 reviews on Upwork and Google
Charlie was outstanding to work with. He set up our Smartlead campaign flawlessly, built a smart Clay workflow, and ensured every lead was properly qualified with truly personalized messaging. His attention to detail and strategic thinking went way beyond expectations. Communication was clear, fast, and professional the entire time. I couldn’t have asked for a better freelancer and will 100% work with him again. Highly recommended!
Upwork review · Email and LinkedIn outreach setup · March 2026
Charlie is fantastic at what he does, he really quickly understood our needs and integrated as an extended arm of our small marketing team. Charlie supported us in mapping, building and optimising automated workflows and journeys within our CRM to significantly improve our lead engagement and nurture, ensuring our marketing spend is maximised moving forward - which as a smaller business is critical. At times he delivered beyond the agreed scope to ensure the project was completed and delivering real results. I highly recommend Charlie to anyone looking to make their marketing efforts work smarter.
Hannah Wiltshire · Google review
We’ve been working with Charlie to create an automated outbound sales system from scratch. Charlie has done an outstanding work throughout the project, from scoping to executing and onboarding. He is a skilled professional that can recommend the right tools specifically for your needs, implement them perfectly, and ensure smooth onboarding. I wholeheartedly recommend his services. Feel free to contact me for reference.
Lukas Moravek · Google review
Charlie did a great job on my project is my goto person for any kind of Lead Gen or Outreach tasks
Upwork review · Cold email infrastructure · July 2026