https://vicente.services/blog/ Vicente Reig is a fractional engineering lead for Ruby and Rails teams working through consequential technical change while the product still has to ship. en https://vicente.services/blog/2026/07/03/your-job-their-loop/ https://vicente.services/blog/2026/07/03/your-job-their-loop/ Fri, 03 Jul 2026 12:00:00 +0200 hey@vicente.services (Vicente Reig Rincón de Arellano) AI companies do not have to replace your job to become the place where your job happens. https://vicente.services/blog/2026/01/25/you-re-not-slow-you-re-confused/ https://vicente.services/blog/2026/01/25/you-re-not-slow-you-re-confused/ Sun, 25 Jan 2026 12:38:00 +0100 hey@vicente.services (Vicente Reig Rincón de Arellano) AI coding tools can reduce some technical-debt work. Teams still have to identify the customer problem blocking delivery. https://vicente.services/blog/2026/01/13/distribution-doesnt-fork/ https://vicente.services/blog/2026/01/13/distribution-doesnt-fork/ Tue, 13 Jan 2026 12:38:00 +0100 hey@vicente.services (Vicente Reig Rincón de Arellano) AI can clone a competitor's code. It cannot copy the customers, brand, search traffic, word-of-mouth, or integrations that made the original product work. https://vicente.services/blog/2025/12/29/the-auditability-gap/ https://vicente.services/blog/2025/12/29/the-auditability-gap/ Mon, 29 Dec 2025 12:00:00 +0100 hey@vicente.services (Vicente Reig Rincón de Arellano) A lead enrichment model returned the wrong person with 0.78 confidence. We could see the score, but not the evidence behind it. https://vicente.services/blog/2025/12/18/what-your-sleep-knows-about-tomorrow/ https://vicente.services/blog/2025/12/18/what-your-sleep-knows-about-tomorrow/ Thu, 18 Dec 2025 10:00:00 -0800 hey@vicente.services (Vicente Reig Rincón de Arellano) I fed 28 days of health data into an LLM. When restorative sleep fell below 30%, my average next-day stress rose to 38; above 45%, it fell to 24. https://vicente.services/blog/2025/12/14/when-ai-replaces-dashboards/ https://vicente.services/blog/2025/12/14/when-ai-replaces-dashboards/ Sun, 14 Dec 2025 14:00:00 -0800 hey@vicente.services (Vicente Reig Rincón de Arellano) My feed is full of Takes™ about when AI will replace us. I'm more interested in when it replaces dashboards. The charts are fine. However, a clear explanation would be better. https://vicente.services/blog/2025/08/11/training-medical-llm-predictors-process,-costs,-and-optimization-with-dspy.rb/ https://vicente.services/blog/2025/08/11/training-medical-llm-predictors-process,-costs,-and-optimization-with-dspy.rb/ Mon, 11 Aug 2025 19:00:00 +0200 hey@vicente.services (Vicente Reig Rincón de Arellano) Built an Adverse Drug Event detector with DSPy.rb that achieves 92% recall—on par with industry screening tools. The real lesson: sample size determines whether your LLM evaluation is meaningful or misleading. https://vicente.services/blog/2025/08/11/finis-coronat-opus-welcome-to-my-blog/ https://vicente.services/blog/2025/08/11/finis-coronat-opus-welcome-to-my-blog/ Mon, 11 Aug 2025 18:00:00 +0200 hey@vicente.services (Vicente Reig Rincón de Arellano) Product-minded Engineer sharing insights at the intersection of product, engineering, and business strategy. From Apple to startups, here's what I've learned.