Theo Wierzma
Senior Developer
Theo is a Senior Developer at DotPerformance, specialising in backend development and system architecture. With more than two decades of experience, he brings the kind of technical depth and forensic attention to detail that complex, foundational work demands.

What makes Theo's background distinctive is where it started. He came to development through project management, which means he understands not just how systems are built but how they fit into the broader context of a project and a business. That perspective shapes how he works, and it shows in the quality of what he produces.
He is a quick thinker with a methodical mind, and the combination makes him effective under pressure. He can diagnose problems fast and resolve them precisely, without cutting corners on the architecture underneath.
Outside of development, Theo is a gifted writer and performer with a deep love of the stage. It is a long way from system architecture, which is perhaps exactly the point.
More about Theo.
What does Theo specialise in?
Backend development and system architecture. Theo works on the foundational layer of digital products, building and maintaining the systems that need to perform reliably at scale. His experience across a wide range of coding languages and frameworks means he can find the right solution rather than defaulting to the familiar one.
The rest of the team
Andy OrtonFounder
Ella GarveyDesigner and Marketer
Raluca MateiOperations Director
Adrian CrellinUX and UI Designer
Dave EdisSenior Developer
Simon KingHead of Digital
Claudiu DanilaSenior Developer
Rachel FabrizioClient Services
John BeatyHead of Systems
Veronica DanilaFront-End Developer
Juan ReadshawSystems Support Specialist
Paula HamiltonAccounts Executive and Client Partner
Will OatesCinematographer & Editor
Jason BurtonBranding Specialist
Nico van LoggerenbergPhotographer & Cinematographer
Mark WadeSenior Developer















