
Elias Mufarech
1.4K posts

Elias Mufarech
@eliasmufa
investor @collidecapital | @berkeleyhaas | prev. at clocktower ventures, courtyard ventures, saxecap, @cloudkitchens, @tandem, @endeavor_global


"Using coding agents well is taking every inch of my 25 years of experience as a software engineer." Simon Willison (@simonw) is one of the most prolific independent software engineers and most trusted voices on how AI is changing the craft of building software. He co-created Django, coined the term "prompt injection," and popularized the terms "agentic engineering" and "AI slop." In our in-depth conversation, we discuss: 🔸 Why November 2025 was an inflection point 🔸 The "dark factory" pattern 🔸 Why mid-career engineers (not juniors) are the most at risk right now 🔸 Three agentic engineering patterns he uses daily: red/green TDD, thin templates, hoarding 🔸 Why he writes 95% of his code from his phone while walking the dog 🔸 Why he thinks we're headed for an AI Challenger disaster 🔸 How a pelican riding a bicycle became the unofficial benchmark for AI model quality Listen now 👇 youtu.be/wc8FBhQtdsA




TBPN is my favorite tech show. We want them to keep that going and for them to do what they do so well. I don't expect them to go any easier on us, am sure I'll do my part to help enable that with occasional stupid decisions.

Private Equity’s Exposure to Software




Why do law firms choose Harvey and Legora over Claude? Right answers only.


This is for everyone who has a dream that simply seems out of reach. 11 years ago I started 20VC as an 18 year old in a bedroom in London. I didn’t know a single VC and had no money. I wrote down the names of three legends of the venture world. I have had two on the show previously and today I complete the list that 18 year old boy made. This was 11 years, 3,000 shows, 3,750 hours, in the making. Never give up, never doubt yourself, stay focused, row your own race. It will come through. Welcoming Marc Andreesen to 20VC today. (Links in comments)


Today we released our new AI Fluency Rubric. We use it for every hire, focusing on what they’ve actually built. Last May we open-sourced V1. Hundreds of companies used it to screen candidates and develop teams. It worked. But the floor moved fast. An updated look at the 3 levels of AI fluency at @Zapier: 1. Capable: "I use AI to operate at a meaningfully higher level." 2. Adoptive: "I orchestrate AI and build systems that elevate how I work." 3. Transformative: "I re-engineer how work happens." We evaluate theses across 4 dimensions: Mindset, Strategy, Building, and Accountability. We're sharing V2 publicly for the same reason we shared V1: every company needs a framework for this, and most don't have one yet. Don’t see your role? See all departments / learn more here: zpr.io/xQq5PHMDChrL








