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Thursday Gathering
Moonfire Build Night
Oct 22, 2026, 6:00 PM - 9:00 PM GMT+1

​📍 1 Triton Square, London NW1 3BF

 

Join Moonfire for an evening bringing together some of London’s best builders, engineers, and researchers.

 

We’ll be joined by leading technologists from Anthropic and Google for a live builder workshop and fireside conversation, exploring how the way we build is changing, what people are creating with the latest generation of AI tools, and what comes next.

 

Alongside the main programme, we’ll be running a live hackathon, with a small group of builders taking over the side rooms to build against the clock. They’ll have three hours to take an idea from prompt to working product, with the best builds taking the main stage at the end of the evening. 

 

Want to take part? Apply here. Hackathon places will be limited, with a separate application shared with those interested in building. 

 

The evening is supported by Google and Anthropic, including token credits for hackathon participants and a live builder workshop for the wider audience.

 

The premise is simple: come and build something yourself, see what some of London’s best builders can put together, and learn directly from the people creating the technology we’re all increasingly building with.

Whether you're already deep in the stack, building a company, experimenting with agents, or simply want to spend an evening around people pushing the technology forward, we'd love to have you there.

 

Powered by Advanced Research + Invention Agency                                  

             

 

In partnership with Moonfire Ventures and Anthropic 

 

 

 

 

 

Event Program
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6:00 PM - 9:00 PM GMT+1
Connect: Pizza & Networking
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6:45 PM - 6:55 PM GMT+1
Welcome Remarks
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6:55 PM - 7:40 PM GMT+1
Live builder workshop with Anthropic
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7:45 PM - 8:15 PM GMT+1
Fireside conversation
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8:15 PM - 8:30 PM GMT+1
Hackathon showcase and winners
Featuring
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Mike Arpaia
Managing Partner, Moonfire

Mike is a computer scientist, entrepreneur and technology investor, he co-created the widely adopted open-source security tool osquery, co-founded and served as CTO of Kolide, and brings deep expertise in machine learning, distributed systems and infrastructure to Moonfire, where he leads the firm’s technology strategy and supports founders in building transformative technology companies.

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Adriaan Engelbrecht
Applied AI, Anthropic

Adriaan Engelbrecht is an Applied AI Engineer at Anthropic in London. He works with some of Anthropic's largest EMEA customers, helping them build their agentic solutions in highly regulated environments.

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Sagar Gupta
VC Partnerships, Anthropic

Sagar Gupta leads VC Partnerships at Anthropic in London. He was previously a Product Lead at Stripe and an investor at EF.

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Kimoon Kim
AI and Cloud Architect for Startups | Google Cloud | CTO mentor | Builder, speaker

Kimoon Kim is a Startup Architect Lead at Google Cloud, a two-time startup co-founder, and a former CTO with 15+ years of experience in production AI and cloud-native architecture. Prior to Google, he co-founded Teraflow.ai and was a Google Developer Expert (GDE). Today, he helps high-growth AI startups de-risk production decisions and turn experimental prototypes into scalable systems.

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Mattias Ljungman
Founder & Managing Partner, Moonfire
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Liam Ward
Director, Venture Café London
Venture Café London
Location
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