Julian Rubisch

Julian Rubisch is not a piece of software — it's a human-led consulting service for founders building AI-assisted web applications. Specifically, Julian Rubisch (the person) offers a one-time codebase audit and an ongoing fractional CTO retainer. The audit (starting at €2,000) is a deep review of an existing codebase, focusing on architecture, security, performance, and patterns unique to AI-generated code. The retainer (€4,000/month) provides weekly PR reviews, architecture guidance, and AI workflow setup. Both services are designed for founders who ship fast with AI but need a senior eye on what's going to production.

The service stands out because Julian Rubisch has over 16 years of experience in generative AI and Rails development. He is a core maintainer of StimulusReflex, a real-time Rails library, and has published extensively on both Rails and algorithmic creativity. The audit covers N+1 queries, auth hardening, AI-generated anti-patterns, and deployment risks. The retainer includes async GitHub reviews without ticketing, along with optional sync deep-work sessions. Julian also provides free AI coding guides and skills specifically for Rails, covering conventions and guardrails that save time.

Best fit for solo founders and small teams who use AI to ship quickly but need a senior technical partner to ensure quality and reliability. Use cases include auditing a codebase before a launch, getting ongoing architectural oversight during active development, and learning how to set up AI workflows that produce dependable code. Julian Rubisch is a human expert who helps you get the most out of AI tools — not an AI tool itself.