About
Meet the founders
SoundGrounds Limited was founded by Hannah and Carl Halvorsen.
Together, they bring experience across software engineering, mobile development, audiovisual production, entrepreneurship, and community building.
Hannah
Hannah is a software engineer with a passion for creating technology that genuinely improves people's lives.
With a background spanning web development, ecommerce, and modern software platforms, Hannah combines technical expertise with a strong focus on user experience and thoughtful design.
She is the creator of Persephone — a women's health companion app designed to help women better understand their health, medications, and wellbeing.
Carl
Carl is an audiovisual professional and entrepreneur with more than two decades of experience building and delivering technical experiences.
As co-founder of Acorn AV in London, Carl spent 10 years developing a company focused on high-quality audiovisual solutions, live events, and technical production.
His approach combines creativity, technical expertise, and a passion for making complex systems work seamlessly.
Together
SoundGrounds exists because we love building things.
Some become software.
Some become businesses.
Some become communities.
Every project starts with curiosity, care, and the belief that thoughtful design and technology can make everyday experiences better.