App Modernisation


We modernise legacy systems and deliver secure, scalable integrations that make enterprise platforms work together seamlessly.



ISO 27001 certified and trusted by government and enterprise at scale.

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Our Approach to App Modernisation


Modernising applications isn’t always about starting from scratch. Legacy systems often contain valuable business logic and proven processes. Our approach balances innovation with pragmatism — selecting the right strategy to modernise while protecting existing value and reducing risk.

RE-PLATFORM & RE-ARCHITECT

We migrate apps onto modern platforms and redesign underlying structures for performance, scalability, and cloud-native benefits — without a full rebuild.

REFACTOR & OPTIMISE

We improve existing code, frameworks, and libraries to enhance efficiency, security, and maintainability — giving legacy apps a new lease on life.

REDESIGN, REBUILD, REPLACE

When incremental steps aren’t enough, we deliver full redesigns or replacements — building modern, user-centric applications that align to enterprise goals.

Platforms & Technology


We’re platform-agnostic — choosing the right technology to meet your requirements for performance, security, and scalability. Our teams deliver across the leading frameworks, cloud platforms, and integration technologies used in enterprise environments.


→  Front-End Frameworks -  React, Angular, Vue, Blazor

  Back-End & APIs -  .NET, Java, Node.js, Python, PHP

  Cloud & Infrastructure -  AWS, Azure, GCP, Kubernetes

  Integration & Data - REST, GraphQL, Kafka, MuleSoft

  Security & Standards -  ISO 27001, DevSecOps, WCAG

Recent Projects


From reporting platforms to portals, we deliver enterprise systems that serve hundreds of thousands of users securely at scale.

MICROSERVICES RE-ARCHITECTURE

We re-architected a microservices solution within a large enterprise program of work after the existing system failed to scale. Built on Kafka with bounded contexts and ACLs, the new architecture ingests telemetry from ~100,000 constantly streaming devices, delivering resilience and performance at scale.

PORTAL MODERNISATION

We engineered a major upgrade to a business-critical education application, migrating from an older .NET version to .NET 7 and shifting the UI from AngularJS to React. These changes halved CPU usage, enabled cross-platform capability, and roughly doubled development velocity through modern frameworks and hot-reloading.

APP RE-PLATFORM

We delivered four apps across iOS and Android as part of a re-platform modernisation. The current team were upgrading from Xamarin to Maui with little success. Our recommendation was to rebuild using AI augmentation for React Native. This resulted in delivering the MVP for the apps in just two weeks.

Latest Blogs


By Hanieh Madad September 29, 2025
At Gartner Gold Coast 2025, everything was about AI — automation, efficiency, disruption, predictions. AI, AI, AI. But in between all that noise, I found myself thinking about how I work, and how I’ve found working at Patient Zero. Some of the things they talked about, like trust, autonomy and team culture, are the things I’ve experienced here.
By Joe Cooney September 25, 2025
The Joy of Faking It - Reducing Security Risks in Legacy System Enhancement with Synthetic Data
A retro-futuristic illustration depicting two men in lab coats operating a large vintage computer.
By Alex Petrakis August 25, 2025
GPT-5 - the highly anticipated latest version of OpenAI’s hit the streets a few weeks ago. Despite of some breathless commentary from influencers who had been given early access, the eventual release was a bit underwhelming (in a way that only something that would have seemed like science-fiction a few short years ago but now seems passe, can be). Aside from the quality of the model itself, which some people have claimed was more about lowering OpenAI’s costs than delivering a better result, there are some issues that the change to GPT-5 has introduced when integrating it into a product which we thought we should share.
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