SOFTWARE ENGINEERING & SYSTEM ARCHITECTURE | 91

We build software systems that run businesses.

We design, build and scale SaaS, FinTech and E-commerce platforms – combining software engineering, integrations, automation and intelligent infrastructure.

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Good software starts with the system behind it.

Architecture determines what comes next.

Products evolve. Users grow. Data increases. Workflows become more complex. New technology creates new possibilities.  Software needs an architecture that can evolve with it. That means thinking beyond individual features – about data, workflows, integrations, automation and the operational infrastructure behind the product.

We work across three levels.

Build.

Platforms built to scale.

We design and develop scalable platforms from the architecture up – connecting data, workflows and business logic in one system.

✓ Scalable architecture
✓ Structured data models
✓ API-first infrastructure
✓ Complex operational workflows

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Scale.

Architecture designed to evolve.

We design systems that can support more users, more data, more integrations and increasing operational complexity.

✓ System architecture
✓ API connectivity
✓ Platform integrations
✓ Scalable infrastructure

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Intelligence.

Intelligence built into the system.

We use AI and automation where they improve how systems operate, decisions are made and work gets done.

✓ Process automation
✓ Operational intelligence
✓ Decision support
✓ Real-time systems

SEE INTELLIGENCE

Systems thinking first.

Technology comes second.

We think about the complete system: how data is structured, how workflows operate, how components interact and how the architecture needs to evolve over time.

Then we engineer around it.

Built to evolve.

Not just built to launch.

The systems we build are designed for what comes after version one. More users. More data. New workflows. New integrations. More automation. New intelligence. Architecture should create room for that evolution, not become the thing that holds it back.

Built for complex operations.

FinTech

Financial platforms, operational workflows, integrations and infrastructure where reliability and control matter.

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E-commerce

Marketplace operations, pricing, inventory, fulfilment and multi-channel infrastructure.

See E-commerce

SaaS & Platforms

Software products designed around users, data, integrations and scalable operations.

Enterprise

Connected architectures across teams, platforms, processes and existing systems.

Systems built from real operational challenges.

We design, build and operate software products ourselves —
from the original business problem and product architecture through to the systems running underneath them.

Marketplace pricing infrastructure

Growdt

A SaaS platform built to automate marketplace pricing, optimise margins and manage pricing decisions at scale.

SEE GROWDT

Financial operational infrastructure

Blackcurrant Finance

A FinTech platform built around automated financial workflows, structured data and scalable operations.

SEE BLACKCURRANT FINANCE

Built by engineers. Shaped by operations.

| 91 works at the intersection of software engineering, system architecture and operational reality. We build our own platforms and work with organisations where technology has become fundamental to how the business operates.

If there's something worth building, scaling or rethinking, let's talk.

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