Leonidas Tsementzis is a highly experienced software architect, technical advisor, entrepreneur, and angel investor with extensive knowledge and expertise in early-stage startup creation and development. With a passion for hands-on product development, he has built a career centered around engineering best practices, data engineering and analytics, scalable web infrastructures, the open web, and web performance.

Tsementzis began his career as a web designer and developer at Katagramma and worked his way up to senior software engineer at Atcom Internet & Multimedia S.A. Later, he served as the technical director at Sport.gr before taking on the role of director of mobile applications at Atcom Internet & Multimedia S.A. He continued to rise through the ranks, becoming the co-founder and CTO of NETROBE and the head of engineering at Forward Partners before taking on interim CTO roles at Patch UK and Live Better With.

As the CTO at Forward Partners, Tsementzis draws on his vast experience to help early-stage startups discover and validate product-market fit, create and retain passionate engineering teams, and build products that grow into valuable businesses. He is also a well-known conference speaker, having spoken on a variety of topics such as scaling engineering teams, web infrastructures, mobile applications architecture, and iterative product development.