Essays on building AI products at scale, quantitative finance, and engineering judgment.https://franciscocucullu.com/https://franciscocucullu.com/blog/running-ai-agents-like-a-teamhttps://franciscocucullu.com/blog/running-ai-agents-like-a-teamRunning multiple AI coding agents in parallel, each owning a slice, while the human reviews and integrates. The bottleneck moves from building speed to clarity of specification and judgment.Mon, 01 Jun 2026 00:00:00 GMThttps://franciscocucullu.com/blog/choosing-not-to-scalehttps://franciscocucullu.com/blog/choosing-not-to-scaleThe most underrated engineering decision is removing the reason you needed to scale in the first place, instead of adding infrastructure or spend. A note on solving by subtraction.Mon, 01 Jun 2026 00:00:00 GMThttps://franciscocucullu.com/blog/scout-focused-product-on-generic-agenthttps://franciscocucullu.com/blog/scout-focused-product-on-generic-agentGeneric AI agents can do almost anything. That is exactly why a focused, opinionated product can still win the specific job. A product-strategy note, with Scout as the example.Mon, 01 Jun 2026 00:00:00 GMThttps://franciscocucullu.com/blog/wasp-frameworkhttps://franciscocucullu.com/blog/wasp-frameworkA hypothesis-driven methodology for building AI products at enterprise speed. Three phases: Challenge Scoping, Problem Space, Solution Space.Fri, 01 May 2026 00:00:00 GMThttps://franciscocucullu.com/blog/xcapit-pivothttps://franciscocucullu.com/blog/xcapit-pivotThe story of how Xcapit evolved from 400%+ returns to UNICEF-backed financial inclusion. What I learned about building products that matter.Sat, 01 Jan 2022 00:00:00 GMThttps://franciscocucullu.com/blog/ai-quality-assurancehttps://franciscocucullu.com/blog/ai-quality-assuranceHow a telecom operator transformed QA operations with AI calibration at scale, achieving 82% accuracy while analyzing every customer interaction.Sun, 01 Dec 2024 00:00:00 GMThttps://franciscocucullu.com/blog/fx-arbitragehttps://franciscocucullu.com/blog/fx-arbitrageMulti-threaded Python system that exploited FX pricing inefficiencies at Argentina's largest broker. Led to promotion to Head of BI.Tue, 01 Jan 2019 00:00:00 GMThttps://franciscocucullu.com/blog/competitive-intelligencehttps://franciscocucullu.com/blog/competitive-intelligenceHow I built 21 real-time scrapers (including mobile app emulators) to monitor every competitor in the Argentine FX market.Sun, 01 Jan 2017 00:00:00 GMThttps://franciscocucullu.com/blog/rpa-trading-deskhttps://franciscocucullu.com/blog/rpa-trading-deskPython-based automation that eliminated 5+ hours of daily manual work for a 5-person team. The evolution from VBA to full ETL pipelines.Fri, 01 Jan 2016 00:00:00 GMThttps://franciscocucullu.com/blog/custom-ai-mlhttps://franciscocucullu.com/blog/custom-ai-mlNeural networks, genetic algorithms, and Bayesian optimization built from scratch with a team of 5 PhDs. Before the LLM revolution.Wed, 01 Jan 2020 00:00:00 GMThttps://franciscocucullu.com/blog/bayesian-optimizationhttps://franciscocucullu.com/blog/bayesian-optimizationGaussian Process-based hyperparameter optimization for algorithmic trading. Featured in Cronista and CriptoNoticias.Wed, 01 Jan 2020 00:00:00 GMThttps://franciscocucullu.com/blog/api-contract-hubhttps://franciscocucullu.com/blog/api-contract-hubAuto-generated test cases from API schemas. Frontend and backend agree on contracts from day zero.Wed, 01 Jan 2025 00:00:00 GMThttps://franciscocucullu.com/blog/discord-data-bothttps://franciscocucullu.com/blog/discord-data-botDiscord bot that democratized data access across the company. Eliminated 100% of ad-hoc data requests.Wed, 01 Jan 2020 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-tv-interviewhttps://franciscocucullu.com/blog/speaking-tv-interviewTelevision appearance on 101 TV Malaga's tech segment.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-south-summithttps://franciscocucullu.com/blog/speaking-south-summitMain stage pitch at South Summit, one of Europe's top startup conferences.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-warsawhttps://franciscocucullu.com/blog/speaking-warsawInternational startup pitch competition in Warsaw, Poland.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-des-malagahttps://franciscocucullu.com/blog/speaking-des-malagaPitched FlexRent at one of Europe's largest digital transformation events.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-coach-summithttps://franciscocucullu.com/blog/speaking-coach-summitPresented AI AutoQA at enterprise summits in Barcelona and Seville.Wed, 01 Jan 2025 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-video-interviewhttps://franciscocucullu.com/blog/speaking-video-interviewIn-depth interview on product vision, market strategy, and startup execution.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/speaking-radio-interviewhttps://franciscocucullu.com/blog/speaking-radio-interviewRadio interview discussing technology, entrepreneurship, and innovation.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/timed-integrationshttps://franciscocucullu.com/blog/timed-integrationsBuilt a micro-SaaS that automated Italian ERP integrations for Factorial's HR platform. Sold the product to Factorial.Mon, 01 Jan 2024 00:00:00 GMThttps://franciscocucullu.com/blog/hasteehttps://franciscocucullu.com/blog/hasteeRedesigned delivery processes at Hastee, increasing engineering output 137%. Led 13 engineers across 3 teams.Sun, 01 Jan 2023 00:00:00 GMThttps://franciscocucullu.com/blog/pepino-brandhttps://franciscocucullu.com/blog/pepino-brandCo-founded a Digital Asset Management SaaS. Closed 7 marketing agencies including Credo and BBK Foundation.Wed, 01 Jan 2025 00:00:00 GMThttps://franciscocucullu.com/blog/flexrenthttps://franciscocucullu.com/blog/flexrentFounded a room exchange platform for digital nomads. Pitched at South Summit, Warsaw, DES. Featured on TV.Sun, 01 Jan 2023 00:00:00 GMThttps://www.linkedin.com/pulse/dealing-heterocedaticity-francisco-cuculluhttps://www.linkedin.com/pulse/dealing-heterocedaticity-francisco-cuculluTechnical article on statistical modeling and handling non-constant variance in financial data.Tue, 01 Jan 2019 00:00:00 GMT