Jason Kneen (BouncingFish)

Mobile apps first, AI agents more recently: BouncingFish is the trading name of a UK freelance developer, Jason Kneen, who describes himself as an award winning mobile app developer, interim CTO and AI engineer. He works with companies around the world, and his site now leads with artificial intelligence in addition to the mobile apps that built his reputation.

AI research and solution builds

The work here covers AI concepts and complete solution builds, from agentic workflows and task automation to company wide education. He says he builds assistants, agents and chat applications on a range of large language model products. His site presents several of his own projects: an agent platform for building and orchestrating AI agents across tools and the desktop, an AI assisted production tool for shows and video, a desktop assistant for the Mac that sees what a user is working on, an AI powered browser for front end developers, a tool that generates playable 3D worlds from a prompt, and a terminal where agents and people share one workspace.

Apps for phones, tablets, web and desktop

On the build side he develops native apps for iPhone, iPad, Android, web and desktop, including cross platform work with React Native, Flutter and Titanium. His web and API work draws on JavaScript, Node JS, PHP, SQL Server, MongoDB and Parse Server, among other technologies.

Part-time CTO and consultancy

Startups can bring him in as a technical co-founder or interim CTO. He describes helping with solution architecture, prototypes, wireframes, requirements, code reviews, building and managing development teams and pitching to investors. Past engagements he lists include a litter picking rewards app, a personal safety app, a walking safety app rebuilt ahead of a funding round, a coworking membership platform, a security and crowd management company's app and a local deals app.

Speaking, writing and community

A fourth strand is developer relations. He speaks at conferences and meet-ups, hosts podcasts and online spaces, builds developer communities and has authored a technical cookbook of recipes for building cross platform iOS and Android apps in JavaScript. He also runs workshops on using AI assistants in work.