Long-form writing from the trenches.
Field notes on fractional CTO work, AI engineering, fintech, and shipping production systems. Real numbers, real architecture, no marketing prose.
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How to ship a real LLM feature in production (not a demo)
Every founder has 3-5 'AI features' on their roadmap. About 80% of those would never survive production. Here's the operational checklist I run through before saying 'yes, we can ship this.'
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Fractional CTO vs technical advisor vs CTO-as-a-service: the actual differences
Three terms founders use interchangeably when shopping the senior-engineering market. They're not the same — pricing, accountability, hours, and presence all differ. Here's the disambiguation.
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The first 90 days of a Fractional CTO engagement
What a fractional CTO actually does in the first 90 days, week by week. Audit, vendor review, architecture decisions, hiring readiness. The concrete process, not the sales pitch.
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Fractional CTO vs full-time hire: when each actually makes sense
A fractional CTO and a full-time CTO are different tools for different problems. Here's the actual decision framework I use with founders — based on stage, cash, and what's currently broken.
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Ready to fix, build,
or scale?
30 minutes, with me personally. I'll read your system like a log file and tell you what I'd do first. No pitch deck, no sales funnel.
— Davor Majc, founder, Numen