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A115 is a London-based consultancy helping fast-growing businesses and scale-ups build sophisticated on-prem or cloud-based technology platforms when code quality matters.

We specialise in rapidly building, securing and scaling cloud-native greenfield platforms to add new capabilities or expand into new markets. With over 20 years' experience productionising experimental code and complex systems, A115 provides end-to-end services - from initial architecture and infrastructure design through development, deployment and maintenance. Leveraging expertise across industries and technologies like Python, SQL, AWS and Azure, A115 enables clients to launch innovative products faster while ensuring robustness, resilience and regulatory compliance.


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Code quality

Python code quality
1 posts

Building Reliable Business Software with Immutable Data Structures

This article explains how immutable data structures enable building reliable enterprise software. Learn techniques to avoid side effects and race conditions by controlling state mutation. See Python code examples modeling business transactions with immutable namedtuples and tuples for auditable, thread-safe code. Understand how isolating state facilitates testing, scalability, and domain-driven design - unlocking simple yet robust systems.

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