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Welcome to the Engineering Blog

Read the latest from our engineers

  • How AI is reshaping what it means to build digital products

    Exploring how AI is reshaping software development — from the end of language-specific roles to the rise of systems-thinking generalists, and what this shift means for teams building digital products today.

    • ai
    • software-development
    • engineering
    • product-strategy
    • team-building

  • Telemetry: the backbone of modern observability

    A look at how telemetry works in distributed systems and why OpenTelemetry has become the standard for collecting observability signals.

    • opentelemetry
    • observability
    • distributed-tracing
    • monitoring
    • telemetry

  • How intelligent systems find what you're looking for

    Part 1 of Information Retrieval and Retrieval Systems

    An introduction to information retrieval and the three main types of retrieval systems: Boolean, Vector Space and Probabilistic models.

    • information retrieval
    • machine learning
    • search
    • AI
    • data science

  • React 19.2: faster, smarter and built for performance

    Exploring React 19.2's latest features including the Activity component, useEffectEvent hook, cacheSignal, Performance Tracks in DevTools, and Partial Pre-rendering improvements.

    • react
    • performance
    • hooks
    • ssr
    • devtools

  • Getting started with Radix for accessibility

    Part 5 of Designing accessible components using the ustwo Inclusivity Principles

    A comprehensive guide to using Radix to simplify web accessibility challenges and help meet the European Accessibility Act requirements.

    • radix
    • accessibility
    • eea
    • react

  • Vibe coding in the house of Winchester

    Reflections on vibe coding, application architecture, and maintainability

    • fullstack
    • ai
    • vibe coding

  • Practical lessons in using generative AI for mobile development

    Discover how generative AI is transforming mobile development with practical insights on using AI for prototyping, testing, documentation, and everyday coding tasks—while balancing architectural best practices, CI/CD integration, and engineering responsibilities.

    • ios
    • mobile
    • ai
    • developer-tools

  • Leveling up your iOS apps

    There are plenty of ways to add that extra polish to your mobile projects without a huge lift. We highlight simple, impactful features and tools that can help level up the user experience in your iOS apps.

    • ios
    • mobile

  • Data viz using bar and line charts that work for everyone

    Part 4 of Designing accessible components using the ustwo Inclusivity Principles

    Learn how we built an accessible bar chart component that combines tooltips, keyboard navigation, and screen reader support to create a truly inclusive data visualisation.

    • accessibility
    • react
    • typescript
    • frontend
    • data visualization
    • accessible components

  • Creating an accessible tooltip

    Part 3 of Designing accessible components using the ustwo Inclusivity Principles

    Learn how we built an accessible tooltip component that works seamlessly across desktop and mobile devices, balancing modern UX with accessibility requirements.

    • accessibility
    • react
    • typescript
    • frontend
    • accessible components

  • HTML first: building accessible components

    Part 2 of Designing accessible components using the ustwo Inclusivity Principles

    Learn how to build accessible UI components using only HTML—no ARIA overuse, no extra libraries. Keep it simple, effective, and truly inclusive.

    • HTML accessibility
    • WAI-ARIA best practices
    • Native HTML components
    • Web accessibility
    • Inclusive design

  • How we build breakthrough digital products for everyone

    Part 1 of Designing accessible components using the ustwo Inclusivity Principles

    For over twenty years ustwo has been delivering breakthrough digital products that work for everyone. We've distilled a set of principles for designing and delivering accessible user experiences. We are proud to release these to mark the European Accessibility Act passing into law in June 2025.

    • Web accessibility
    • Inclusive design

  • Developing iOS projects at ustwo

    Discover key insights from our iOS engineering team on project setup, version targeting, environments, modularization, testing, PRs, and deployments to help streamline your app development process.

    • ios
    • mobile

  • Leveraging bedrock for knowledge base management

    Part 3 of Empower your application with LangChain, LangGraph and Bedrock

    Learn how to manage document-based knowledge bases with Amazon Bedrock, simplifying AI interactions for context-aware applications.

    • ai
    • bedrock
    • langchain
    • knowledge management

  • Managing complex AI interactions with LangGraph

    Part 2 of Empower your application with LangChain, LangGraph and Bedrock

    Discover how LangGraph enables multi-step and multi-agent workflows for more sophisticated AI applications.

    • python
    • langchain
    • langgraph
    • ai

  • Exploring AI tools for LLM interactions

    Part 1 of Empower your application with LangChain, LangGraph and Bedrock

    Learn how to integrate AI into your applications with LangChain, simplifying interactions with large language models (LLMs).

    • python
    • langchain
    • ai
    • javascript

  • AI in action

    Build a real-time speech-to-speech translation app with OpenAI, AssemblyAI, ElevenLabs and LangChain for natural language processing.

    • python
    • langchain
    • openai
    • assemblyai
    • elevenlabs

  • Swift packages with binary targets

    What if there was a way to offer a Swift package to your consumers without having to share your source code?

    • swift
    • xcode

  • Getting started with VisionOS

    A short guide on how to get up and running with RealityKit on VisionOS.

    • visionos
    • realitykit