PixelArc Ventures is a UK engineering company built around one conviction: the model is the easy part. The work is the plumbing — latency, integration, reliability — that turns a clever demo into a system people actually use.
Speech-to-speech systems end to end: streaming speech recognition, multi-model LLM orchestration, emotion and action systems, and text-to-speech — engineered for sub-second response, in game engines and anywhere else humans talk to machines in real time.
AI agents that hold state, take gated actions, and run unattended on real infrastructure — with the permission boundaries, observability and fail-closed behaviour that separate production software from a promising pilot.
The decade of foundations underneath: high-performance multiplayer networking, distributed backends on AWS and Azure, and engine-level integration in Unreal and Unity. Low latency is a habit, not a feature.
A full real-time dialogue pipeline — streaming STT through LLM orchestration to TTS at sub-second latency — architected from specification to production, integrated into Unreal Engine.
A high-speed multiplayer backend in Rust that carried a VR startup's production collaboration sessions from launch through to its acquisition — followed by engineering leadership shipping Varjo Teleport and Varjo Reality Cloud.
Backend services built inside FTSE 250 financial-services security and compliance standards — the discipline that keeps "moves fast" from meaning "falls over."
4th of nearly 52,000 in the RevenueCat Shipaton — a production mobile app designed, built and shipped solo inside the competition window.
GDPR-safe AI redaction for care providers — stripping personal data from text before it reaches AI tools, built for a sector where confidentiality isn't optional.
Our internal operations platform: AI agents that monitor, brief, track and build — running unattended in production, every consequential action behind a human-confirmed gate. We use it to run the company; it's also the proof behind everything above.
A consumer mobile app shipping autumn 2026 — real-time AI characters, delivered somewhere unexpected. More when it lands.
Matt Galbraith — senior engineer with fifteen-plus years across games, VR and fintech: early engineer to Head of Engineering at Dimension10 through its acquisition by Varjo, senior engineering at AJ Bell, and today leading real-time conversational AI work in games. Based in Lancashire; works with teams across the UK and Europe.
PixelArc Ventures takes on selective engagements. If the work above sounds like your problem space, get in touch.