How a 91-year-old vibe coded a complex event management system using Claude and Replit | John Blackman

John Blackman, a 91-year-old retired electrical engineer, shares how he used Claude and Replit to build a complex application for his church’s community service events—with no prior software development experience and for less than $350. His app allows event organizers to create events, recruit volunteers, and manage sign-ups, with a standout feature for organizing free oil changes for participants. What you’ll learn: - How John used Claude to create detailed product requirements and user stories - John’s philosophy on embracing new technology throughout his career - The exact process for integrating third-party APIs (like VIN lookup for oil changes) with minimal technical knowledge - How he automated report generation for volunteer management and resource planning - How the software generates personalized Impact Passports for event participants - Why letting AI build without preconceived notions of “correct” implementation can lead to faster, more functional results - How to troubleshoot common development-to-production issues when working with AI coding tools — Brought to you by: WorkOS—Make your app enterprise-ready today Orkes—The enterprise platform for reliable applications and agentic workflows — Where to find John Blackman: Website: http://johnbeng.com/ — Where to find Claire Vo: ChatPRD: https://www.chatprd.ai/ Website: https://clairevo.com/ LinkedIn: https://www.linkedin.com/in/clairevo/ X: https://x.com/clairevo — In this episode, we cover: (00:00) Introduction to John Blackman and his background (02:55) John’s impressive career (03:59) How the church project started (05:06) Using Claude to create a development roadmap and requirements document (07:29) The concept of the Impact Passport for event participants (08:57) Generating user stories and requirements with Claude (10:32) The multi-tenant architecture with system and local church administrators (12:54) Building the application with Replit (13:32) Demo of the administrator interface and event management features (17:56) Specialized reports for different services (food pantry, vision center, oil changes) (20:30) The participant registration flow with QR code scanning (21:55) Adding new features like volunteer name tag generation (24:40) Troubleshooting AI “rabbit trails” during development (26:09) Challenges moving from development to production (27:13) John’s lack of coding experience (29:42) The advantage of having no preconceived notions about implementation (30:25) Total development costs and timeline (31:31) Impact and reception from the church community (32:42) Lightning round and final thoughts — Tools referenced: • Claude: https://claude.ai/ • Replit: https://replit.com/ • SendGrid: https://sendgrid.com/ • AutoCAD: https://www.autodesk.com/products/autocad/ — Other references: • OpenAI API: https://openai.com/api/ • VIN (vehicle identification number): https://en.wikipedia.org/wiki/Vehicle_identification_number • Multi-tenant architecture: https://en.wikipedia.org/wiki/Multitenancy • Role-based access control: https://en.wikipedia.org/wiki/Role-based_access_control • Excel: https://www.microsoft.com/en-us/microsoft-365/excel • Docusign: https://www.docusign.com/ — Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email [redacted email].