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Elixir Mentor

Elixir Mentor

Jacob Luetzow 85 episodes Latest May 30, 2026

The Elixir Mentor Podcast is a show dedicated to the Elixir programming language, featuring interviews with community members and discussions on innovative projects, libraries, and best practices. It aims to provide insights and inspiration for developers at any stage of their Elixir journey.

Episodes

Tjaco Oostdijk on Drums to Elixir Jun 7, 2026 01:31:25 In this episode of the Elixir Mentor Podcast, I talk with Tjaco Oostdijk, a drummer turned Elixir developer now working at DPG Media, one of the largest media companies in the Netherlands. Tjaco played drums professionally from the age of seven and has taught for 22 years, before landing in software through a music distribution company writing Ruby and eventually moving to Elixir nearly a decade a
Peter Ullrich on Hunting CVEs May 30, 2026 01:50:19 Peter Ullrich returns to talk about a CVE hunt across the most-downloaded Hex packages, run with Claude Code on Opus 4.7. After ElixirConf EU pulled him into AI security, he started pointing Opus at popular libraries day and night, and within half an hour of his first serious attempt he found the Decimal vulnerability, where raising 10 to a huge power can blow up an application's memory.We get int
Jason Allum on Bedrock May 24, 2026 01:35:06 In this episode of the Elixir Mentor Podcast, I sit down with Jason Allum, creator of Bedrock and Beadwork and a 40-year veteran of computing, to talk about Bedrock: an embedded, distributed key-value store for Elixir with guarantees that go beyond ACID.Jason walks through the problem Bedrock solves, keeping distributed state consistent when the same data is read and written across many nodes. We
Michael Lubas on AI, Attack, and Defense May 16, 2026 01:31:41 Michael Lubas, CEO of Paraxial.io, returns to the Elixir Mentor Podcast to talk about AI's dual role in cybersecurity: finding the vulnerabilities and writing the code that creates them. Michael was my first-ever guest, and a lot has changed since his last appearance — most of it driven by the inflection point of the past six months.We open with the Hex package manager penetration test that Paraxi
Vasilis Spilka on LLMs & Ash Apr 21, 2026 01:36:53 In this episode of the Elixir Mentor Podcast, I chat with Vasilis Spilka, Head of Software Development at Teacherspace, about building agentic software as a solo developer, the pairing of Ash and LLMs, and what it takes to ship a startup side project alongside a day job.Vasilis shares his path from Ruby on Rails in 2014 to nearly a decade of Elixir work across fintech, supply chain, and ad tech. W
Luca Corti on Bringing Elixir to Fintech Apr 12, 2026 01:40:23 In this episode of the Elixir Mentor Podcast, I sit down with Luca Corti, CTO at Sibill, a Milano-based fintech startup building cash flow management software for Italian small and medium businesses. Luca walks through his path from the early days of the internet at a small ISP in Milano to discovering functional programming at a major Italian telco—and why Elixir clicked for him immediately after
Steve Domino on Starting a Fintech Apr 4, 2026 01:35:24 Steve Domino is the co-founder and CTO of Crew, a fintech startup building what he calls the most powerful checking account in the world — one with programmable automation rules, a family-scoped AI financial assistant, and zero of the fees that make traditional banking frustrating. He came up through startups, spent time at Divvy before its Bill.com acquisition, and brought his Elixir experience d
Mark Cotner on Scaling Telecom Mar 29, 2026 01:32:40 Mark Cotner is a DBA managing around a thousand databases by day and a telecom CTO by night — building hospitality cable networks for RV parks, nursing homes, and apartment complexes at 100% annual growth. In this episode, he walks through the infrastructure, the business, and the two-year project that just landed on Hex: Timeless, an embedded observability suite for Elixir built on Rust NIFs, hit
George Millo on Agentic Coding Mar 22, 2026 01:31:03 George Millo — creator of Learn Phoenix Live View and alumnus of the Gauntlet AI fellowship — joins me to talk through what really changes when you commit to LLM-driven development. George went through Gauntlet's intensive 10-week program built around LLM maximalism, came out the other side rethinking how he builds software, and has spent the past year working on an AI-first engineering team apply
Leandro Pereira on MDEx Mar 14, 2026 01:35:58 Leandro Pereira is back on the Elixir Mentor Podcast — this time to dive deep into MDEx, his Rust-powered Markdown library for Elixir. MDEx is built on the Comrak Rust crate, runs 31x faster, and uses 3,500x less memory than existing Elixir alternatives. We also get into Lumis, his standalone syntax highlighting engine powered by tree-sitter and Neovim themes.Leandro walks through why he chose a R
Josh Price on Ash & Alembic Mar 11, 2026 01:54:43 Josh Price, founder & CTO of Alembic and one of the core forces behind Ash Framework, joins me for a wide-ranging conversation that starts with the origin story of Alembic, winds through the history of GraphQL and Ash, and lands on Clarity — his new interactive introspection and visualization tool for understanding your Ash codebase. Josh has been writing Elixir for over ten years and building
Thomas Athanas on Building Without Vendor Lock-In Mar 7, 2026 01:38:03 Thomas Athanas, Head of Engineering at LevelAll, joins me on the Elixir Mentor Podcast to talk through the infrastructure, architectural, and leadership decisions that come with building systems you actually own — and what happens when vendor lock-in catches up with you in production.Thomas walks through LevelAll's move away from Fly and Gigalixir toward bare metal hardware, the thundering herd pr

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