<h1 class="hero__title fade-in d1">Custom software,<br><em>built to last.</em></h1><p></p>

CSD

Custom software,
built to last.

We build the systems enterprises rely on banking workflows, loyalty engines, regulated platforms, mobile apps that have to work in low-connectivity rural areas. The kind of software that's still running, supported, and shipping value when the next CTO arrives.

Typical engagement

3–18 months From discovery to launch

Team size

3–12 engineers Sized to the work

Stack focus

.NET · React · React Native SQL Server · Azure / AWS

Delivery model

Fixed-scope or retained EU-timezone delivery

What we build

Six kinds of system.

01 / 06

Enterprise platforms

Multi-user, multi-role, multi-region systems where governance, audit trails, and reliability are first-class concerns. Banking marketing operations, loyalty programs, private-terminal management the core business systems behind the front-of-house. Multi-tenant RBAC Audit-grade SSO-ready

02 / 06

Cross-platform mobile apps

React Native applications that share one codebase across iOS and Android stable in low-connectivity environments, real-time synced where it matters, fast on hardware that isn't new. React Native iOS + Android Offline-first Push notifications

03 / 06

Web applications

Modern single-page applications and progressive web apps. Browser-only, zero client install, works behind enterprise firewalls. Built with React and TypeScript on a clean API surface. React TypeScript PWA-capable Browser-only

04 / 06

API & integration layers

REST and GraphQL APIs, integration with banking core systems, third-party services, and legacy infrastructure. The connective tissue that lets old systems and new systems coexist gracefully. REST GraphQL Webhook-driven OpenAPI

05 / 06

Legacy modernisation

Replacing or progressively migrating ageing systems to modern stacks without breaking what works. Strangler-pattern migrations from legacy platforms to modern architectures with controlled risk. Strangler pattern Phased migration Risk-managed Zero big-bang rewrite

06 / 06

Internal & operational tools

The unglamorous systems that run the business reservation engines, fleet management, asset registries, custom CRMs. Built to fit operations instead of forcing change. Operational reliability Custom workflows Integration-ready Business-critical

How we work

A discipline, not a
methodology poster.

Discovery

Two-week engagement: understand the business, map the system, interview the people who'll use it. Output is a working scope, a costed estimate, and a real architecture plan.

Launch

Phased rollout where the system allows it. Real users in pilot before general availability. Observability and runbooks in place before launch, not after.

Build

Two-week sprints, demo at the end of each. Code reviews are mandatory. Tests are mandatory. CI is mandatory. We don't ship anything to staging that hasn't passed automated checks.

Sustain

We don't disappear at launch. Ongoing support, dependency upgrades, security patches, feature work. The same team, billing predictably, available when something breaks at 3am.

How to work with us

Three ways to start.

01/3

Two-week discovery

A focused engagement to understand your system, map the work, and produce a costed plan.

02/3

Fixed-scope build

A defined deliverable, a defined timeline, a fixed price.

03/3

Retained partnership

A standing engineering team, billed monthly. Right for systems that need continuous evolution rath

Proof

In production today

We build the systems enterprises rely on banking workflows, loyalty engines, regulated platforms, mobile apps that have to work in low-connectivity rural areas.

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Custom software,built to last.